tigerbeetle

Released: 2026-07-03

Safety And Performance

• #3810

  Revert unique keys, which caused compatibility issues (see #3802).

• #3822, #3844

  Extend inspect constants to catch schema changes and prints the Checkpoint Schedule section.

• #3845

  Micro-optimization to the radix sort algorithm to avoid copies when dealing with large stack-allocated values.

• #3840

  Online schema validation, ensuring coherent key_min/key_max when reading data.

Features

• #3816

  Improve the Ruby client migration guide.

• #3836, #3832, #3835, #3834

  Various docs improvements, including adding the Ruby client and print layout support.

• #3830, #3811

  Add a u128 bounds check in the Ruby client and make its status return type more idiomatic.

• #3827

  Improve the Rust client, removing the bitflags dependency and enabling overflow checks.

• #3852

  Experimental CLI --memory flag that automatically sizes the grid and object caches to use all assigned memory.

Internals

• #3825, #3831

  Improve various code comments.

• #3793

  Switch to stdx.SocketAddress.

• #3826

  Fail on curl instead of unzip for network flakes during Vortex builds.

• #3813

  Expose TimeSim and fixtures in VSR.

• #3820

  Introduce the canonical workload principle for benchmarks.

• #3682

  Make publishing TigerBeetle client artifacts idempotent.

• #3817

  Workaround MacOS builds on Zig 0.14.1 (see issue).

TigerTracks 🎧

• Home

Released: 2026-06-19

Safety And Performance

• #3802

  Fix a bug in which the stash would overflow due to excess tombstones.

• #3798

  Fuzz scans over mutable secondary indexes, and fix an assertion.

• #3797

  Fix commit stall injection for clusters with 8 or more active clients.

Features

• #3787

  Prepare Ruby client for publishing.

• #3792

  Add gauge metric to record replica start time.

Internals

• #3795

  Add case conversion helpers to stdx.

• #3781

  Add stdx.net with IP address implementation.

• #3801

  Add FuzzIterations abstraction to control fuzzer smoke test duration.

TigerTracks 🎧

• The Fallen

Released: 2026-06-12

Note: it is advisable to skip 0.17.6 and 0.17.7 and upgrade directly to 0.17.8 due to a potential crash. If you encounter the crash, it can be mitigated by temporarily increasing the object cache size. See #3802.

Safety And Performance

• #3786

  Significantly improve the TigerBeetle REPL parser. Ensure that users see correct and useful error messages, and fix some inconsistencies.

  Introduce snapshot testing and proper fuzzing, which allowed fixing some latent parsing bugs.

Internals

• #3779

  Replace hatchling as the TigerBeetle python client packager with our own zig wheel builder, which allows reproducible builds without dependencies.

• #3783

  Allow passing timeouts for all shell operations called from zig tooling.

• #3785

  Ensure CI release and release validation jobs don't run concurrently to reduce flakes induced by CI job race conditions.

TigerTracks 🎧

• むこう岸が視る夢

Released: 2026-06-05

Note: it is advisable to skip 0.17.6 and 0.17.7 and upgrade directly to 0.17.8 due to a potential crash. If you encounter the crash, it can be mitigated by temporarily increasing the object cache size. See #3802.

Safety And Performance

• #3778, #3762

  Fix resource leak & potential overflow in the .NET, Java, and Go clients.

  Thank you @jf-li00 for spotting these!

• #3673, #3770

  Substantially reduce tail latency by performing compaction merge incrementally as opposed to a single big merge at the end of the bar.

• #3748

  Make space for replica connections on the accept path, evicting clients or random peers that may be hogging TCP connections.

• #3769

  Various improvements to the ping-pong protocol between the client and cluster.

  Specifically, clients now proactively send a ping while registering a session with the cluster (as opposed to waiting 30 seconds), and the cluster may now respond with an eviction message when a ping is received (as opposed to waiting for the next request from an evicted client).

• #3735

  Improve fuzzing around LSM tree deletions on the lookup path, which now checks for tombstones.

• #3774

  Guarantee that the StateMachine works on cache-line-aligned buffers; callers can take advantage of this alignment to efficiently reinterpret the bytes.

Internals

• #3780

  Ban the usage of std.fmt.parseInt, which is useful for interactive use-cases like CLI/REPL, but a bit too permissive for protocols.

TigerTracks 🎧

• Everything In Its Right Place

Released: 2026-05-29

Note: it is advisable to skip 0.17.5 and upgrade directly to 0.17.8 due to a potential crash on upgrade (see #3808).

Safety And Performance

• #3744

  Fix a possible Node.js integer overflow panic.

• #3717

  Fix a potential crash in the I/O event listener.

• #3709

  Correct assertions in the code.

• #3592

  Run DISCARD when formatting a block device on Linux, improving SSD performance.

• #3712

  Replace Java's assert keyword with AssertionError.assertTrue to prevent silent failures.

• #3686

  Refactor the grid to own all blocks through reference counting.

• #3702, #3730

  Inject stalls on the primary more accurately by observing a backup's op - commit_min, improving throughput.

• #3704

  Fan out VSR prepare timeout retries.

• #3729

  Explicitly fail on invalid enum values in AMQP parsing per Swival security audit recommendation.

• #3726

  Add an assertion to CheckpointTrailer.open as per Swival security audit recommendation.

Features

• #3733

  Add a Ruby client. Thanks @citizen428!

• #3750

  Switch from ArenaAllocator to DebugAllocator to fix ArenaAllocator rounding up allocations by large amounts.

Internals

• #3753

  Improve the names of some VSR commands.

• #3763

  Make release validation run from main, making it easier to fix when release validation fails.

• #3746, #3752

  Move shell.zig into stdx, making it more robust for different zig project setups.

• #3745

  Show the freshness of performance results in DevHub.

• #3716, #3710

  Cleanup Time usage and drop std.time.Timer uses ahead of its removal in Zig 0.16.

• #3721

  Raise the clock-skew warning threshold from 1ms to 50ms to prevent CI flake.

• #3703

  Introduce configurable primary keys and multiple unique keys to LSM Forests. This enables querying two-phase transfers by pending_id.

• #3711

  Fix various tb_client issues, enable Rust client CI on Windows.

• #3734

  Remove the cancel_all feature used to shutdown tb_client on Linux, instead terminate message bus connections explicitly.

• #3724

  Dial up concurrency in the Node.js client test to reliably race destroy against create.

• #3736, #3738

  Fix flaky Vörtex and Windows cache CI failures.

TigerTracks 🎧

• Weird Fishes

Released: 2026-05-08

As of TigerBeetle 0.17.4, the minimum required Linux kernel version is 5.11.

Safety And Performance

• #3619

  Refactor and simplify the Linux IO event loop, by directly embedding a timeout when calling io_uring_enter, making next_tick a top level function (instead of executing all callbacks back to back) and reentering the kernel after each callback.

  Combined, these changes give a ~8% improvement on the standard benchmark, improve tail latencies in certain edge cases, as well as prevent tick starvation under heavy load or slow disks.

• #3701

  Fix a bug in reformat caused by invoking IO.run from within IO.run_for_ns.

• #3680

  Track the object caches as metrics, to help with sizing (e.g., --cache-accounts).

• #3693

  Fix file permissions to no longer ask for world readable/writable files when creating them. Normally, this does get prevented by the default umask.

Internals

• #3698

  Add warnings when the event loop is slow.

• #3694, #3684

  Cache the Zig download for test workflows, add the flake count to Devhub and miscellaneous CI fixes.

TigerTracks 🎧

• Das alte Haus von Rocky Docky

Released: 2026-05-01

Safety And Performance

• #3669, #3668

  Switch replication strategy from adaptive replication routing to star.

  Star replication involves the primary broadcasting prepares to all backups and handles network jitter better, leading to lower p100 latencies in cross-region deployments.

• #3665, #3671, #3676

  Guard against supply-chain attacks via GitHub actions by pinning them to the latest commit SHAs.

• #3659

  Recompute the checksum body only for operations that modify the body.

• #3679

  Simplify the control flow of Zig-Zag merge using galloping search, to drain the keys and avoid rebuilding the tree multiple times.

Internals

• #3678, #3675

  Workaround various flakes caused by GitHub actions.

  Specifically, actions cache flakes on Windows, and gh run list sometimes returns no response.

• #3672

  Fix a flaky client test due to an overly conservative timeout for expiring transfers.

• #3674

  Make release validation work cross-platform.

• #3683

  Fix the Go client documentation for posting/voiding pending transfers.

TigerTracks 🎧

• Airbag

Released: 2026-04-24

Safety And Performance

• #3660

  When a replica sends a message to itself, copy in message body before computing checksum_body and checksum.

Features

• #3657

  Track value_count_visible as a metric, per tree. This is useful for counting the number of accounts/transfers in the database.

Internals

• #3661

  Test that checksum works on unaligned data.

TigerTracks 🎧

• Line Between

Released: 2026-04-17

Safety And Performance

• #3643

  Make VSR repair less eager, cutting request_prepare traffic by ~70-80% and request_headers by ~80-90% for minor overhead.

• #3600

  Improve compaction table-selection from O(a * log b) to O(a + b), especially noticeable at 20TB+.

Internals

• #3637

  Refactor stdx.flags to own its allocator and return trailing -- args as a slice.

• #3642

  Rename VSR view-change messages: DoViewChange -> JoinView, StartView -> View, StartViewChange -> ExitView.

• #3652

  Re-enable VOPR in CI.

• #3649

  Increase tick budget for the Vortex upgrade/recover test, which was occasionally timing out.

• #3647

  CI: fetch git tags in the release-validate job.

• #3648

  Docs: drop an overly wide comparison table from the API changes page.

• #3650, #3651

  Docs: remove references to the retired Startup Program.

• #3653

  Clean up TigerTracks in CHANGELOG.md by only using song titles.

TigerTracks 🎧

• Golden Times

Released: 2026-04-10

This release improves create_accounts and create_transfers operations. They now return timestamps of newly created objects, allowing the application to learn the resulting global order of events without additional roundtrips. As usual, this release remains wire-compatible with previous clients. To gain access to the new APIs, please upgrade clients to version 0.17.0. Refer to the API changes page for details.

Safety And Performance

• #3599

  Improve repair performance by tracking per-replica repair budgets, to prevent a slow replica from tying up the global budget.

• #3618, #3623, #3630, #3638

  Add randomness to repair timeouts and faulty block iteration, to guard against resonance liveness bugs.

• #3612

  Test cluster upgrades using real TigerBeetle binaries in Vortex.

Features

• #3258

  Change the return type and semantics of the create_{accounts,transfers}.

• #3574

  Add the API changes page to the docs: https://docs.tigerbeetle.com/coding/api-changes.

• #3624

  Remove default initialization from Python client's AccountFilter and QueryFilter.

• #3607

  Querying with a limit which would not fit in the maximum message size now fails with TooMuchData in the client, rather than silently truncating results.

• #3593

  Add metric tracking recent client min/max releases seen by the cluster.

• #3617

  Fix several bugs in the client_request_round_trip metric.

• #3620

  Make the Golang client API more idiomatic using *big.Int.

• #3628

  While generating a TigerBeetle time-based ID, clients now wrap the random bits and increment the timestamp bits when the former overflows.

  Earlier, clients panicked when random bits overflowed on increment.

Internals

• #3609

  Cache Zig compiler on CI.

• #3604, #3622

  IO/Linux: Add another attempt to the flock() retry loop.

• #3634, #3629, #3635

  Various Vortex and CFO fixes.

• #3632

  Docs: Clarify the number of replicas required for upgrades.

• #3595

  Docs: Fix a flipped account flag in balance-invariant-transfers.md.

TigerTracks 🎧

• Картины Босха

Released: 2026-03-20

Safety And Performance

• #3581

  Fix an over-tight assert -- we may still be writing non-repair blocks at the start of checkpointing.

• #3586

  Fix a potential liveness issue where we try to repair a block while simultaneously writing to it.

Internals

• #3585

  tigerbeetle inspect constants now prints out the number of Transfers per table.

• #3579, #3589, #3591, #3584, #3594

  Fix the CI release validation job.

• #3583

  Refactor our iops.zig to a more appropriate home in stdx.

TigerTracks 🎧

• Rage Room

Released: 2026-03-13

Note: it is advisable to skip 0.16.77 and upgrade directly to 0.16.78, due to potential liveness issues (see #3581 and #3586).

Safety And Performance

• #3485

  Rework how eviction is signaled in tb_client to avoid race conditions between eviction and shutdown, unify notification logic, and add assertions for running on the correct thread.

• #3553

  Optimize compaction performance by removing IO stalls at the end of each beat, allowing IO to overlap with other work and increasing throughput by ~4%.

• #3567

  Allow the grid to serve reads directly from write queues, improving performance for blocks being currently repaired or created.

• #3575

  Work around a miscompilation in Zig's LLVM backend by downcasting alignment in stdx.equal_bytes.

Internals

• #3572

  Prepare the Rust client for release by removing dependencies (anyhow, futures-channel), and setting up automated release builds (not enabled yet).

• #3537

  Fuzz updates on CompositeKeys, identifying a bug in a proposed prefix-only sort optimization.

• #3566

  Add a new metric to track time spent on CPU work, specifically callbacks.

• #3569

  Tighten units for IOPS, concurrency, and durations in config.

• #3576

  Fix worst case sizing and add prefetch in the scan fuzzer, to mirror state machine logic.

TigerTracks 🎧

• Stairway To Heaven

Released: 2026-03-06

Features

• #3556

  Expose CLI arguments to diagnose connectivity issues with AMQP and TigerBeetle during CDC.

  Users can now specify --amqp-timeout-seconds and --tigerbeetle-timeout-seconds (both default to 30), which define the maximum time to wait for a reply from AMQP and TigerBeetle respectively.

• #3565

  Record request timing metrics for reserved VSR operations.

  This gives users visibility into the latency of client registrations (the first request a client sends to the cluster), using the register operation.

Internals

• #3543

  Add tidy check to flag functions with length [71, 72], as per TigerStyle.

  This check intentionally incentivizes shortening the length to <=70 for functions that are just over, as a starting point towards the 70-line limit.

• #3561, #3560, #3559, #3558

  Various documentation improvements.

• #3552

  Use a fixed, high retry delay instead of exponential backoff to work around GitHub availability.

• #3568

  Various refactors and debug logging improvements in compaction.

• #3555

  Add logging to clarify the semantics of multiversion upgrade polling.

TigerTracks 🎧

• What I've Done

Released: 2026-02-27

Safety And Performance

• #3529

  Fix the fast path check for key_range_contains. Previously, the fast path would never be taken due to checking snapshot_latest incorrectly.

• #3545

  Enable transparent huge pages on Linux - relieving TLB pressure and giving a nice little throughput bump!

Internals

• #3549, #3547, #3538

  Rage against the (GitHub) Machine.

• #3541

  Fix an overestimation of the number of index beats that will be generated by compaction.

TigerTracks 🎧

• Sleep Now in the Fire

Released: 2026-02-20

Safety And Performance

• #3528

  Add a replica test for an asymmetric partition where the primary can never receive messages, yet still does not abdicate. This test documents the current behavior, which must be fixed.

Internals

• #3400

  Refactor LSM scan direction handling to simplify key comparisons in ascending and descending order.

• #3518

  Reduce the internal I/O thread stack size of the TigerBeetle client to 512 KiB.

• #3525

  Bump the minimum rustc version to 1.71 for building the TigerBeetle Rust client.

TigerTracks 🎧

• Don't Stop Me Now

Released: 2026-02-13

Safety And Performance

• #3505

  Making AOF recovery deterministic, and prevent interference from non-aof-recovery requests.

• #3508, #3516

  Improve Rust client testing.

Internals

• #3511

  Strip tracking parameters from Spotify links.

• #3517

  Include vortex zig driver executable in release artifacts, in preparation for multiversion testing in vortex.

• #3522

  Add metrics tracking LSM write amplification.

• #3523

  Reduce the frequency of metrics tracking in the message bus.

TigerTracks 🎧

• Never Gonna Give You Up

Released: 2026-02-06

Safety And Performance

• #3471

  Dramatically improve View Change time with a new FaultDetector that estimates the probability of a primary crash.

Features

• #3484

  Track commit_timestamp and message_bus connections.

• #3497 #3421

  Add support for rotating AOF files without signals.

Internals

• #3491 #3496 #3494 #3490 #3495 #3489 #3488

  Various documentation improvements and clarifications.

• #3503

  Clarify that PR descriptions are ephemeral and do not replace well-written commit messages.

• #3504

  Capture additional Vortex logs during end-to-end testing.

• #3499 #3501 #3498

  Code cleanup and an increase in the maximum number of accounts supported by the benchmark.

TigerTracks 🎧

• Sonderling

Released: 2026-01-31

Safety And Performance

• #3482

  Add basic tracing/metrics to event loop times. Also fix a bug in "max" timing metrics.

• #3475

  Rewrite and improve performance of tree-of-losers k-way-merge implementation.

• #3479

  Use callconv(.@"inline") for radix sort key_from_value function.

• #3478

  Add --id-order=tbid to benchmark. This makes the benchmark more accurately resemble a real-world workload. Additionally, with this setting multiple runs of the benchmark will not encounter id collisions.

• #3476

  Prefetch index blocks during compaction, so that we don't need to block waiting for the read.

Features

• #3453

  Ensure public contract is stated in the tb_client header file.

Internals

• #3480

  Make CFO crash less easily if fuzzer behaves unexpectedly. Also make local testing of CFO more similar to real CFO execution.

TigerTracks 🎧

• DreamFlux

Released: 2026-01-23

Features

• #3464

  Document client cancellation policy.

• #3460

  Move ARCHITECTURE.md up in the docs hierarchy. It's a part of internal docs, but is well worth reading for anyone curious about TigerBeetle internals!

Safety And Performance

• #3426

  Enable history by default for tigerbeetle benchmark. Argument-less benchmark captures our current understanding of a representative workload, so the results are not guaranteed to be comparable across tigerbeetle versions.

Internals

• #3468

  Tighten up CLI parsing to forbid accidentally allowed signs. E.g, --cluster=+0 is now an error.

• #3467

  Make experimental AOF feature a run-time, rather than compile-time flag.

• #3465

  Simplify debugging devhub by cloning (but not pushing) devhub-db during local development.

• #3457

  Use --cache-grid to reduce memory in tests of Rust client.

• #3440

  Simplify state machine by using actual op number instead of symbolic snapshot_latest for LSM lookups.

TigerTracks 🎧

• Model

Released: 2026-01-09

Safety And Performance

• #3436

  Fix a potential resource leak in SegmentedArray during initialization failure.

Features

• #3454

  Rust client: Display platform information in the error message when attempting to run on unsupported platforms.

• #3449

  Node client: Switch to process.report.getReport() for more reliable Musl libc detection.

Internals

• #3458

  Docs: Clarify the prose in the balance-invariant transfer recipe.

• #3455

  Refactor DateTimeUTC to InstantUnix for tracking real, non-monotonic time.

• #3452

  Refactor Vörtex network handling.

• #3432

  Remove confusing "slow request" warning from VSR logs.

• #3439 #3448

  Improve logging consistency for headers and checksums. Thanks @fdesu!

• #3435 #3438 #3434 #3430

  Various microbenchmark improvements for checksums, k-way-merge, and binary search.

• #3444 #3441 #3422

  stdx: Remove stream_precedence, improve shuffle implementation robustness, and document monotonicity of Instant.

• #3451 #3450 #3447 #3428

  CI and Build: Reduce Java flakiness, remove APK workarounds, simplify release validation, and deduplicate tb_client builds.

• #3431 #3425

  Devhub: Throw Error instead of String in asserts, and support more units.

• #3446 #3437 #3445 #3427 #3419

  Minor fixes, tidy ups, and documentation improvements. Thanks @dsp and @amiraliakbari!

TigerTracks 🎧

• Wie viele Hände hat der Octopus?

Released: 2025-12-12

Safety And Performance

• #3415

  Speed up VOPR storage and network during liveness mode for fast convergence, to avoid false positives.

• #3402

  Don't discard high 16 bits of timestamp when generating ID's with the Node.js client.

• #3411

  Relax VOPR condition for truncating acked ops to prevent false positives.

• #3405

  Implement a micro-benchmarking harness, to protect the benchmarks from bitrot.

Features

• #3386

  Add more documentation details around query multibatching.

Internals

• #3414

  Make Pending!?Value the canonical stream signature. This type is chosen because it is the orthogonal composition of iteration and asynchrony.

• #3417

  Prevent "out (disk) of space" failures during CI.

• #3396

  Make DSL for parsing positional CLI flags more natural.

• #3375

  Remove dead code from zig-zag merge join.

• #3389

  Improve how Vörtex handles SIGTERM.

• #3391 #3394

  Improve the way we handle ratios in stdx, and refactor parse_flag_value.

• #3395

  Update TigerStyle with more context for the line and function length limits.

• #3390

  Improve some spelling and grammar in start.md. Thanks @elness!

TigerTracks 🎧

• The Ominous Blue

Released: 2025-11-21

Safety And Performance

• #3379

  Fix non-monotonic ID generation in the Python client. Thank you for spotting this, @rbino!

Internals

• #3371

  Introduce op_checkpoint_sync to simplify assertions during state sync.

• #3353

  Run Vörtex in CFO (Continuous Fuzzing Orchestrator).

• #3380

• #3384

  Various fixes for Vörtex in CFO.

TigerTracks 🎧

• The Flute Song

Released: 2025-11-14

Safety And Performance

• #3377

  Fix overzealous assertion that didn't account for state sync while accepting start view headers.

Internals

• #3369, #3370, #3374

  Various MessageBus refactors to reduce code bloat.

  Earlier, the connection and message passing logic was spread out across the MessageBus and Connection types. Now, all that logic is contained within the MessageBus type, with Connection only maintaining connection state between two peers.

• #3367

  Fix bug in cut_suffix wherein the suffix itself was being returned instead of the prefix.

• #3365

  Make IO file descriptor a Zig optional, as opposed to using INVALID_SOCKET.

• #3364

  Add support for canceling individual inflight IO operations on Linux.

  Earlier, Linux IO only allowed canceling all asynchronous in-flight operations.

TigerTracks 🎧

• Elegia

Released: 2025-11-07

Internals

• #3344, #3362

  Parametrize code over Operation rather than the entire StateMachine. Previously, client code used to have a dependency on the implementation code of the concrete state machine, whereas it only needs to know the types of the operations involved.

• #3358, #3356, #3357

  Remove usize from constants, scans and CLI arguments.

• #3351

  Remove StateMachine's dependency on a specific StateMachineConfig and rather use the global constants.

• #3343

  Simplify the Rust client's build script and bring it inline with other clients by making it no longer driver TigerBeetle's build.

TigerTracks 🎧

• Hallo My Maatjie

Released: 2025-10-31

Safety And Performance

• #3294, #3336

  Allow backups to accept prepares from the next checkpoint when they replace already committed prepares.

• #3323

  Assert the size of Headers and StartView messages.

• #3318

  Correctly reset the pulse_next_timestamp.

• #3316

  Disable config.verify in release builds, while promoting several assertions gated by verify to regular assertions.

• #3335

  Fix an unhandled error on unreachable networks that could cause liveness issues. Also ban all usage of posix.send() in favor of posix.sendto().

• #3334

  Free up about 300MiB of memory by sharing the same buffer for in-place radix sort.

Features

• #3302

  Clarify that the TBID, which is a u128 number, only specifies the bit layout.

• #3291

  Introduces tigerbeetle inspect integrity to verify offline that a data file is uncorrupted.

• #3254

  Prepare the Rust client for publication.

Internals

• #3312, #3324

  Improve duration parsing by removing ambiguous units and adding fuzz tests.

• #3313

  Update data file documentation to correctly state the grid block size as 512 KiB.

• #3311

  Clarify the release process in case a version of TigerBeetle is skipped.

• #3317

  Fix invalid payload references after modifying the active tag in a tagged union.

• #3339

  Remove unnecessary deduplication logic when scanning from memory tables, since #2592 already introduced deduplication during sorting.

• #3346

  Reserve the maximum release version (65535.x.x) for testing clusters (cluster_id zero).

• #3342, #3338, #3330, #3347, #3341

  Various Vortex and CFO improvements.

• #3332, #3331

  Fix the build command for clients in HACKING.md and other typos. Thanks @gharbi-mohamed-dev!

TigerTracks 🎧

• NINETY-TWO

Released: 2025-10-17

Safety And Performance

• #3304

  Enable VOPR to detect when the message limit is exceeded.

• #3307

  Enable unit tests for deprecated operations.

• #3309

  Improve the release process by publishing to npm via trusted publishers.

Features

• #3299

  Rephrase the "debits first" explanation in documentation.

Internals

• #3300

  Refactor the message bus to save memory and tighten explicit SendQueue limits.

• #3296

  Implement BoundedArray from scratch.

• #3292

  Remove needless use of bounded array from REPL.

• #3308

  Refactor and cleanup Vortex.

TigerTracks 🎧

• No Goodbye

Released: 2025-10-03

Safety And Performance

• #3263

  Speed up cluster repair by adapting the pace and distribution of repair requests according to observed network conditions.

• #3282

  Speed up cluster repair by not delaying execution of committed prepares until the log is fully repaired.

• #3249, #3293, #3289

  Add a dedicated fuzzer for MessageBus.

Features

• #3212

  Add --log-trace for extra verbose logging.

• #3286

  After successfully adding a test that tests in #3136, we doubled down on this strategy and are adding a metric for tracking metrics.

Internals

• #3115

  Use ISO4217 three-letter codes when writing about currencies (so, USD over $).

• #3284

  Clean up Adaptive Replication Routing implementation.

• #3287

  Speed up zig build test by removing false build-time dependencies.

TigerTracks 🎧

• Сколько тебя

Released: 2025-09-26

Safety And Performance

• #3270

  Remove a copy from the StateMachine.

• #3273

  Update the k-way-merge to use the new from_seed_testing().

• #3277

  Improve metrics to use a reduce the worst case packet count (and benefit from a small memory saving while we're at it).

Features

• #3278

  Clarified documentation on closing accounts and two-phase transfers. Thanks @raui100!

Internals

• #3275

  Refactor references to old time types to use the Instant and Duration types.

• #3274

  Added documentation for our CI entrypoint: zig build ci.

TigerTracks 🎧

• Undefeated

Released: 2025-09-19

Safety And Performance

• #3257

  Introduce Least Significant Digit (LSD) radix sort in stdx.

• #3268

  Use radix sort in the memory tables to get more performance improvements.

• #3250

  Reduce tail latencies by tracking sorted runs and use k-way merge to sort them.

  Collectively, these changes result in the following performance improvements on modern servers (Hetzner AX102):

  Metric	Before	After
  Load accepted (tx/s)	414,375	606,258
  Batch latency p100	115ms	75ms

Internals

• #3262

  Use Zig's new std.testing.random_seed to introduce genuine randomness in tests.

• #3260

  Fix a crash due to corruption and misdirection found by the WIP message bus fuzzer.

TigerTracks 🎧

• Autobahn

Released: 2025-09-12

Safety And Performance

• #3248

  Fix a bug where grid.cancel was erroneously being invoked during commit_stage=checkpoint_durable.

• #3245

  Remove peer type from MessageBuffer, maintaining it only at MessageBus level.

  This solves a bug introduced by #3206, due to divergent peer state between MessageBus and MessageBuffer.

• #3226, #3230, #3223, #3222

  Low-level LSM performance improvements. The k-way merge iterator now uses a tournament tree instead of a heap, we skip sorting of the mutable table if it's not needed, and we skip binary search if possible by min/max key ranges.

• #3237

  Use a different PRNG seed for Replica each time, rather than a fixed seed of the replica ID. This PRNG controls things like exponential backoff jitter and the order of the blocks on which the grid scrubber runs.

Features

• #3253

  Introduce --requests-per-second-limit to throttle CDC requests to TigerBeetle.

  Usage for this option is orthogonal to --idle-interval-ms and --event-count-max, allowing fine-tuning for low latency without overflowing the AMQP target queue.

• #3206

  In order to avoid bimodality if a replica is down (e.g., a client sends a request, doesn't hear anything, eventually times out and tries a different replica) clients now proactively send their requests to the primary and a randomly selected replica.

  Backups can also send replies directly to clients, meaning that a client could be completely partitioned from the primary, but still remain available.

Internals

• #3251

  Mark grid cache blocks as MADV_DONTDUMP, making core dump size tractable even with large caches.

• #3227, #3231, #3242

  Preparation for the Zig 0.15.1 upgrade.

• #3236, #3229, #3198

  A host of multiversion improvements! Multiversioning is now a proper interface, rather than being scattered about. Additionally, Windows support is now significantly more robust, and will be integration tested like the other platforms in the next release.

TigerTracks 🎧

• See You Again

Released: 2025-08-29

Safety And Performance

• #3200

  Improved performance in set_associative_cache.zig by using Fastrange and SIMD.

• #3201

  Improved performance and better codegen in aegis.zig by avoiding aliasing.

• #3205

  Retain table repair progress across checkpoint boundaries, to reduce the time to complete state sync for active clusters.

• #3216

  Use the NOSIGNAL flag with both asynchronous send and synchronous send_now. This avoids receiving a possible SIGPIPE signal raised by the kernel.

• #3189

  Improve the Rust client API to make the returned future thread-safe. Thanks @michabp!

• #3208

  Fix the Go client to make the subfolder with external files required by CGO compatible with go vendor. Thanks @itzloop.

• #3203

  Fix the Python client to make close() async on ClientAsync.

Internals

• #3215

  Removed support for closed loop replication in repair and sync protocols.

• #3210, #3211

  Ban equality and inequality comparisons with error values, as they may silently perform an untyped comparison. Enforce handling errors with switch blocks instead.

• #3207

  Consolidate all Windows APIs we use (not present in Zig’s std) under stdx.windows.

• #3199, #3194

  Improve upgrade tests.

• #3202, #3140

  Improve the documentation to explain adaptive routing and add notes about using CDC in production.

• #3196

  Moves the unshare code into stdx.unshare and uses it for both Vortex and CFO. Also fixes how vortex run was handling the child process error code.

TigerTracks 🎧

• American Pie

Released: 2025-08-22

Safety And Performance

• #3185

  Improve the speed of trailer repairs by initiating repair requests more proactively.

• #3017

  Add Vortex to CI to test clients (Java, Zig, Rust).

• #3193

  Ensure only the primary responds to VSR repeat requests.

Features

• #3014

  Add a typed Python client (thanks @stenczelt).

Internals

• #3195

  Simplify budgeting for VSR repairs.

• #3181

  Refactor ReleaseList to contain the release logic.

• #3190

  Improve naming for journal and grid message budgets.

TigerTracks 🎧

• Boiler Room

Released: 2025-08-15

Safety And Performance

• 3187

  Make repair timeout reliably fire in a loaded cluster processing small batches.

• #2863

  Make tigerbeetle format concurrent and only write essential data. This speeds up the time to format considerably.

• #3145

  Cache prepares from the future, to help avoid needing to repair the WAL near checkpoints when a backup is a little behind primary.

Features

• #3174

  Don't unlink data file on formatting failure.

• #3173

  Use correct default statsd port (8125).

• #3154

  Remove translation logic from old checkpoint state to new. Note that this means that tigerbeetle inspect will no longer decode superblocks from 0.16.25 or older, until they are upgraded to at least 0.16.26.

Internals

• #3186

  Improvements to the balance bounds, rate limiting, and two phase transfers recipes. Thanks @snth!

• #3150

  Use true quine to generate unit tests.

• #3160

  Drop SigIllHandler. This was supposed to print a nice error message on unsupported architectures, but we hit SigIll in Zig's _start, before we get to our main.

• #3148

  Add constants for KiB thru PiB.

TigerTracks 🎧

• Heavyweight

Released: 2025-08-08

Safety And Performance

• #3123

  Speed up repair by removing a round-trip to fetch headers.

• #3134

  Check checksums when downloading Zig during the build.

Features

• #2993

  Add documentation for Rust client library.

• #2989

  Test that release artifacts are fully reproducible.

Internals

• #3136

  Add a test to test that tests include all the tests.

• #3143

  Remove local variable aliasing as per TigerStyle.

• #3124

  @splat all the things.

• #3135

  Use double-entry accounting for allocations.

• #3129

  Remove git-review.

• #3131, #3130

  Show total number of VOPR runs for release.

TigerTracks 🎧

• War Pigs

Released: 2025-08-01

Safety And Performance

• #3090, #3116

  Allowing EWAH to decode bigger free set into smaller. This fixes the --limit-storage flag.

• #3089

  Fix Node.js v24 client.

Features

• #3119

  Add compaction/checkpoint/journal slot count to tigerbeetle inspect.

Internals

• #3121

  During tests, verify that grid read errors correspond to either storage faults or ongoing state sync.

• #3122

  Teach snaptest how to decode/encode hex & zon.

• #3110

  Fix typo in manifest_log_fuzz.

• #3113

  Test CreateTransfersResult.exists in VOPR.

• #3117, #3120

  stdx refactoring.

TigerTracks 🎧

• Summer Eyes

Released: 2025-07-25

Safety And Performance

• #3093

  Improve repair performance by tracking requested prepares so each is repaired exactly once per timeout.

Internals

• #2956

  In VOPR, model events using nanosecond-resolution timestamps to uncover more interesting interleaving.

• #3088 #3100 #3102

  Initialize IO and Tracer early. Avoid comptime type specialization.

• #3101

  Update TigerStyle with additional conventions for naming things and ordering struct fields.

• #3105

  Add --requests-max CLI flag to VOPR.

• #3107

  In DevHub, use font-size-adjust to better match sizes of sans and monospace text.

• #3108

  Introduce a fixtures module for fuzzing and testing to avoid code duplication.

TigerTracks 🎧

• Changes

Released: 2025-07-18

Safety And Performance

• #3096

  Fix incorrect assert in the commit stall logic.

  This assert could cause the primary to crash while it is injecting a commit stall, if an old primary has committed ahead of it.

• #3008

  Improve compaction scheduling algorithm to be more performant and memory efficient.

  Earlier, during each beat, we used to compact each active tree and level, leading to multiple context switches. Now, we compact each tree and level to completion before moving on to the next.

Features

• #3086

  Add metrics that track the time taken to complete read and write IO.

Internals

• #3087

  Remove comptime type specialization on Time and replace it with a runtime interface.

• #3085

  Change all instances of data block -> value block, more aptly named for blocks containing values.

• #3084

  Update architecture documentation to explain how to correctly integrate TigerBeetle into a larger data processing system.

• #3083

  Fix example for voiding pending transfers in the dotnet, go, node, and python clients.

• #3082, #3091

  Fix broken link to the Viewstamped Replication paper and some typos in the documentation.

• #3078

  Fix VOPR false positive where we erroneously find two different versions of an uncommitted header.

• #2990

  Refine BoundedArrayType API, renaming functions to be shorter and consistent with Queue and Stack.

TigerTracks 🎧

• LOVE.

Released: 2025-07-13

Internals

• #3076

  Cleanup Zig TODO items that have been resolved with the recent upgrade to Zig 0.14.1.

• #3071

  Always copy fields from vsr_options to build_options, since Zig 0.14.1 removed anonymous structs. Thanks @rbino!

• #3075, #3074

  Use realtime to enforce budget and refresh timeouts in the CFO.

• #3072

  Remove unwind_tables from release builds and strip client libraries to reduce binary size.

TigerTracks 🎧

• Washday Blues

Released: 2025-07-04

Safety And Performance

• #3064

  Fix a division by zero when logging CDC metrics, and increase resolution to nanoseconds.

• #3050

  Apply backpressure at primary to mitigate an issue with lagging backups.

Internals

• #2705

  Upgrade to Zig 0.14.1.

• #3068

  Fix a typo that caused probabilities to be parsed as hexadecimal.

TigerTracks 🎧

• Dance of Maria

Released: 2025-07-01

Internals

• #3062

  Updates the publishing process for the Java client to conform to the Maven Central Repository due to the OSSRH service end-of-life.

• #3048, #3047

  Fixes and improvements for tracing and metrics.

TigerTracks 🎧

• All Shook Up

Released: 2025-06-27

Note: This release is missing some client libraries in their respective package managers.

Safety And Performance

• #3032

  Fix ABI assertions in Rust client.

• #3039

  Swarm test different replication configurations in VOPR.

• #3053

  Supports CDC processing for transfers created by versions earlier than 0.16.29. Fixes a liveness bug that would crash the replica if a CDC query encountered objects created with a schema before #2507.

Features

• #3038

  Add client_request_round_trip metric to track end-to-end client request latency.

• #3043

  Support --clients alongside --transfer-batch-delay-us in tigerbeetle benchmark.

• #3056

  The command tigerbeetle inspect constants prints VSR queue sizes.

Internals

• #3045

  Define timeouts in terms of tick_ms.

• #3042

  Disable "hint" argument for mmap call, which was observed to cause stack overflow.

TigerTracks 🎧

• Wishmaster

Released: 2025-06-19

Safety And Performance

• #3030

  Always build tb_client for Rust client in release mode.

Internals

• #3031

  Prioritize more important fuzzers in CFO.

TigerTracks 🎧

• Geef Mij Maar Amsterdam

Released: 2025-06-13

This release changes the CDC message header to use AMQP signed integers. The new encoding will be handled transparently by RabbitMQ/AMQP clients. However, code changes might be necessary if the consumer explicitly relies on the unsigned data type.

Safety And Performance

• #3023

  Fix a liveness bug related to when replicas are syncing.

• #3022

  Fix a crash related to timing when measuring commit timing.

Features

• #2907

  Add documentation on how to monitor TigerBeetle, track requests end-to-end for better monitoring.

• #3019, #3029

  Improves compatibility of our new CDC connector by supporting AMQP signed integer types, and fixes an assertion that previously overlooked the possibility of receiving an asynchronous basic_ack while publishing a batch of messages. Thanks @alvinyan-bond for your feedback!

Internals

• #3018

  Add a recovery smoke test.

TigerTracks 🎧

• The Grid

Released: 2025-06-06

Features

• #3006

  Improve logging for missing replies by including the op number.

Internals

• #3011

  DevHub now displays how many fuzz runs are executed per minute (VPM).

• #3010

  Remove cluster from the MessageBus as part of the MessageBuffer rework.

• #2992

  Handle all message padding uniformly.

• #3001

  Limit the fuzzer processes to 20GiB of RAM.

• #3009

  Prevent stack probing from actually using all of the stack due to unexpected inlining.

TigerTracks 🎧

• Lose My Mind

Released: 2025-05-30

This release includes the tigerbeetle recover subcommand, which can be used to safely recover a replica that is permanently lost.

Additionally, it includes Change Data Capture (CDC) support to stream TigerBeetle state to Advanced Message Queuing Protocol (AMQP) targets, such as RabbitMQ and other compatible brokers.

Check out the documentation to learn about how to use CDC and tigerbeetle recover!

Safety And Performance

• #2996

  Add the tigerbeetle recover subcommand, to safely recover a replica that is permanently lost (e.g. if the SSD fails).

  Earlier, the only way to recover a permanently lost replica was using the tigerbeetle format command. However, this was unsafe, as a newly-formatted replica may nack prepares which its previous incarnation acked -- a correctness bug.

• #2880

  Implement an adaptive replication routing protocol to handle changes in network topology.

  To select the best route, primary uses outcome-focused explore-exploit approach. Every once in a while, the primary tries an alternative route, and replaces the current route if the alternative provides better replication latency.

• #2970, #3002

  Replica pulls messages from the MessageBus, as opposed to the MessageBus pushing messages.

  Earlier, replicas had to process every message that the bus pushed. This could lead to messages being dropped due to lack of available disk read/write IOPs. Now, a replica can "suspend" certain messages and return to them later when it has enough IOPs.

Features

• #2917

  CDC support to stream TigerBeetle state to AMQP targets, such as RabbitMQ and other compatible brokers.

  We implement the AMQP 0.9.1 specification instead of AMQP 1.0 as it is simpler and more widely supported (e.g., RabbitMQ only recently added native AMQP 1.0 support).

Internals

• #2982

  Unify the production and testing AOF code paths to make sure the production AOF is rigorously fuzzed by the VOPR.

• #2991

  Reduce code duplication while erasing IO callbacks' type.

• #2998

  Track debug build times on DevHub.

• #2987, #2988, #2997, #2999

  Miscellaneous improvements and fixes to CI and release.

TigerTracks 🎧

• 16 CARRIAGES

Released: 2025-05-23

Safety And Performance

• #2980

  Fix assert in fulfill_block, if a replica receives a block that it didn't ask for from a newer replica.

Internals

• #2973

  Extract the parsing parts of MessageBus into a sans-IO style ReceiveBuffer, that'll be used for the upcoming pull based MessageBus.

• #2979

  Speed up the LSM scan fuzzer.

TigerTracks 🎧

• Knowing Me, Knowing You

Released: 2025-05-16

Safety And Performance

• #2972

  Implement request throttling for grid repair, making state sync less chatty over the network.

• #2957

  Improved latency and throughput in prepare repair operations.

Internals

• #2967

  Make the Quick Start page more direct by showing only the installation instructions for Linux by default, with Windows and macOS hidden behind click-to-expand sections.

• #2958

  New tigerbeetle inspect op command that displays checkpoints and triggers surrounding a given op number.

TigerTracks 🎧

• Paradise City

Released: 2025-05-09

Safety And Performance

• #2959

  Fix AOF unflushed assertion.

• #2950

  Decouple prepare repair from header breaks. This helps a replica repair faster, and prevents a case where we would request a prepare only to discard it when it arrives.

• #2945, #2961

  Bump default journal write iops. Previously we were inadvertently throttling repair by not allocating enough.

• #2944

  Primary now broadcasts start_view message on checkpoint durability. This will help syncing replicas update to the latest sync target as early as possible.

• #2952

  Add assert to check return value of next_batch_of_block_requests.

Features

• #2943, #2949, #2951

  Improve logging, especially of lagging replicas.

Internals

• #2937

  Add subcommand to git-review to send review comments as a email.

• #2926

  Add subcommand to git-review to split suggested code changes out of a review commit.

• #2940

  Speed up fuzz smoke tests.

• #2941

  Improve memory usage of tests 10x and test runtime 10x.

• #2936

  Add arbitrary debug output to CFO seeds.

• #2931

  Fix for multiple CFO branches on same commit.

• #2964

  Reduce closed loop replication quorum from n to n-1.

TigerTracks 🎧

• Field of Stars

Released: 2025-05-02

Heads up, we are changing our release process! From this point on, a TigerBeetle release is tagged on Friday, spends a weekend on the CFO fleet, and is published on Monday. In other words, you'll still be getting a new release every Monday, but the date of the release will be set to Friday. This setup allows extra time for fuzzers to find problems in the specific commit we are trying to release.

Safety And Performance

• #2928

  Continuously fuzz the release branch, in addition to the main branch and the pull requests.

• #2923

  Eagerly deinitialize clients upon eviction, to proactively sever TCP connections to replicas.

Features

• #2679

  Add an initial Rust client. Note that it is not published to crates.io yet.

Internals

• #2906

  Reduce verbosity when running full CI suite locally.

TigerTracks 🎧

• Тёплые Коты

Released: 2025-04-28

Safety And Performance

• #2664

  Switch to using gpa as backing allocator for clients.

• #2902

  Set socket options for peer connections.

• #2665

  Add tb_client_init_parameters and implement for Python client.

Features

• #2921

  Fix tigerbeetle inspect grid for data files with no used blocks.

Internals

• #2914, #2913

  CI improvements.

• #2918

  De-genericify Queue.

• #2912

  Modernize stdx.cut API

• #2732, #2915, #2920

  Trial a git-native + offline-first code review interface.

• #2924, #2911, #2910, #2909

  Devhub improvements. In particular, ensure that a failing canary fuzzer is obvious.

• #2905

  Compile scripts for zig build ci.

TigerTracks 🎧

• Eventide

Released: 2025-04-21

Safety And Performance

• #2896

  Fix a bug where VOPR latencies were computed incorrectly when the minimum and mean were equal.

Internals

• #2893

  Improve binary size and compilation time by making implementation of intrusive stack non-generic.

• #2898

  Make the Docs website pass the W3C HTML validation test.

• #2883

  Fix a memory leak in VOPR and apply idiomatic naming conventions for the allocator.

• #2901

  Fix a panic where the VOPR attempts to print a deinitialized packet when debug logs are enabled.

TigerTracks 🎧

• Money

Released: 2025-04-14

Safety And Performance

• #2891

  Fix journal disjoint-buffer assertion.

• #2887

  Make object cache optional. This improves throughput by ~10%, as we can omit the object cache from the account events groove, which never uses it.

Internals

• #2888

  Rename FIFO to Queue

• #2882

  Add zig build ci to help run CI checks locally.

TigerTracks 🎧

• The Great Gig in the Sky

Released: 2025-04-07

Please note that after #2787, which adds batching support for all operations, the batch_max limit has changed from 8190 to 8189 accounts/transfers per batch.

Safety And Performance

• #2787

  Add support for batching multiple independent requests of the same operation within a single VSR message, amortizing network and consensus costs.

  Earlier, we batched only create_accounts and create_transfers. Now, we can batch any operation!

Internals

• #2878

  Use TigerBeetle's time abstraction as opposed to raw OS time in the tracer.

• #2881

  Allow custom network packet delay functions in the VOPR. This allows us to simulate latencies for different network topologies, for example the ring/star topology.

• #2866, #2874

  Fix a VOPR false positive wherein we were accessing a crashed replica's uninitialized memory.

• #2869

  Improve error thrown when an invalid --account/transfer-batch-size is passed to the benchmark CLI.

• #2876, #2877

  Minor refactors to VSR and VOPR.

• #2872, #2873

  Fixes and improvements in the documentation.

TigerTracks 🎧

• All Things Must Pass

Released: 2025-03-31

Safety And Performance

• #2861

  Add basic fuzzing for the state machine.

• #2846

  Re-do tickless VOPR to simulate fast IOPs.

• #2852

  Allow simulating one-replica-down scenario in the VOPR.

• #2858

  Print dropped packets in the VOPR.

• #2850

  Various changes for VOPR performance mode.

• #2821

  A quicker request protocol for VSR.

• #2848

  Account for pulses when computing the size of the request queue in VSR.

• #2853

  Fix a possible panic in the Node.js client by handling the "too much data" error.

• #2860

  Fix a possible replica crash if negative timestamps would be provided to AccountFilter or QueryFilter.

Features

• #2830

  Allow tigerbeetle inspect to run on open data files. This helps with getting an idea what's going on a running cluster without needing to shut it down first.

Internals

• #2833

  Vendor our own BitSet in stdx, TigerBeetle's extended standard library. This change reduces the Linux binary size by 38KiB.

• #2862

  Track the REPL execution time on DevHub.

• #2859

  Fix the wording in the correcting transfers example. Thanks @shraddha38!

• #2845

  Remove the global allocator from the fuzzers and pass the allocator explicitly to align more with TigerStyle.

• #2854

  Block merges in the CI based on DevHub pipeline results.

• #2840

  Add replica/lsm/grid/journal metrics to VSR.

TigerTracks 🎧

• Pushing Onwards

Released: 2025-03-24

Note that #2824 bumps the oldest supported client version to 0.16.4, removing backward compatibility with various deprecated features. Please make sure that all of your clients are running on at least 0.16.4 before upgrading to this release!

Safety And Performance

• #2835

  Add performance mode to the VOPR, which tracks the number and aggregate size of each kind of message during a run.

Features

• #2824

  Bump the oldest supported client version to 0.16.4, removing backward compatibility with various deprecated features.

Internals

• #2826

  Simplify the idiom around adding elements to lists with comptime known lengths.

• #2827

  Better styling for links and block quotes in the documentation.

• #2831

  Change debug multiversion builds to encapsulate two versions as opposed to five.

• #2832

  Improve CFO efficacy by retaining Zig build cache across fuzzing iterations.

• #2836

  Update TigerStyle to add a new rule about using long form arguments in scripts (--force over -f).

• #2834, #2837, #2839, #2841,

  Fix various VOPR false positives.

TigerTracks 🎧

• On The Way Home

Released: 2025-03-17

Safety And Performance

• #2798, #2815

  Vendor the PRNG, and tweak the API to be less wordy.

  PRNG algorithms tend to change, often for reasons not applicable to TigerBeetle. We need neither the fastest, nor the most secure PRNG, and it's better if we rotate our PRNG algorithm at our own pace.

• #2813

  Fix a case where, if a busy cluster's pipeline is full, the prepare_timeout was never reset.

  This improves performance of a local benchmark for a 6-replica cluster with one replica down and 4 clients almost ~4x.

Internals

• #2804, #2806, #2803

  Add syntax highlighting to docs code snippets (thanks @nilskch!), fix Python example code (thanks @IvoCrnkovic!) and update our HACKING.md with current practices.

• #2819, #2814, #2812

  Prepare for the Zig 0.14 upgrade by applying as many changes that still work on 0.13 as possible. This includes vendoring AEGIS, to keep hash stability, as 0.14 changes the implementation.

TigerTracks 🎧

• Get Ready

Released: 2025-03-09

Safety And Performance

• #2790

  Use LIFO instead of FIFO for free blocks during compaction for better temporal locality.

• #2799

  Disallow converting negative big integers to UInt128 in the Java and Go clients, as they would be incorrectly interpreted as unsigned big integers when converted back.

• #2801

  Remove spurious write_reply_next() after read completes in client_replies, as reads and writes can happen concurrently.

• #2783

  Assert that cache_map.stash is not using any element beyond its defined capacity.

Features

• #2725

  Various REPL fixes and improvements.

• #2773

  Add single-page mode to the documentation website.

Internals

• #2791, #2792, #2793, #2794, #2795, #2796, #2807

  Miscellaneous documentation typo fixes, clarifications, and references.

• #2788, #2802

  Ban qualified std.debug.assert and @memcpy.

• #2776, #2800

  Fix code comment typos.

• #2595

  Add tracking of format time and startup time to the devhub.

TigerTracks 🎧

• The Hardest Button To Button

Released: 2025-03-03

Note: Before performing this upgrade, please make sure to check that no replicas are lagging and state syncing.

You can ensure this by temporarily pausing load to the TigerBeetle cluster and waiting for all replicas to catch up. If some replicas in your cluster were indeed lagging, you should see on_repair_sync_timeout: request sync; lagging behind cluster in the logs, followed by sync: ops=, which indicates the end of state sync. If you don't see the former in the logs, then you are already safe to upgrade!

This is to work around an issue in the upgrade between 0.16.25 → 0.16.26, wherein a state syncing replica goes into a crash loop when it upgrades to 0.16.26. If one of your replicas has already hit this crash loop, please reach out to us on the Community Slack so we can help you safely revive it.

Safety And Performance

• #2774

  Fix TOCTOU bug in our hybrid set-associative cache and hash map structure, wherein a promotion to the cache coupled with an eviction from the cache could lead to invalid pointer references.

• #2771

  Add logic to crash replica upon receiving unknown commands from clients and other replicas.

• #2766

  Fix upgrade bug wherein a replica does not detect a change in the binary if it is replaced during its initialization in Replica.open().

• #2761

  Alternate replication direction for even and odd ops to better detect breaks in the ring topology.

Internals

• #2770, #2781, #2779, #2778, #2769,

  Add new docs content to TigerBeetle Architecture, fix miscellaneous typos and references.

• #2760

  Simplify idiom around a replica sending messages to itself.

• #2764

  Refactor MessageBus to remove platform-specific IO logic.

TigerTracks 🎧

• For Crying Out Loud

Released: 2025-02-24

Note: Before performing this upgrade, please make sure to check that no replicas are lagging and state syncing.

You can ensure this by temporarily pausing load to the TigerBeetle cluster and waiting for all replicas to catch up. If some replicas in your cluster were indeed lagging, you should see on_repair_sync_timeout: request sync; lagging behind cluster in the logs, followed by sync: ops=, which indicates the end of state sync. If you don't see the former in the logs, then you are already safe to upgrade!

This is to work around an issue in the upgrade between 0.16.25 → 0.16.26, wherein a state syncing replica goes into a crash loop when it upgrades to 0.16.26. If one of your replicas has already hit this crash loop, please reach out to us on the Community Slack so we can help you safely revive it.

Safety And Performance

• #2763

  Explicitly ignore deprecated protocol messages.

• #2758

  Fix a crash when, during upgrade, replica's binary is changed the second time.

Features

• #2698

  Implement metrics, using statsd format.

• #2507

  Add new indexes to the account balances to enable CDC.

• #2521, #2751, #2756, #2757, #2754

  Restructure documentation.

• #2727

  Implement more standard shortcuts for REPL.

Internals

• #2742

  Refactor C client API to remove internal mutex.

• #2747

  Don't use deprecated Node.js APIs in the samples.

• #2748, #2744

  Improve documentation search.

• #2734

  Switch to vale for documentation spell checking.

TigerTracks 🎧

• Зов Крови