statsig-rust

Breaking Changes

• N/A

New Features

• Go:
  • Contains() checks parameter existence on configs, experiments, layers, and parameter stores, while ParameterStore.GetParameterList() lists configured keys
• Elixir:
  • Statsig.ObservabilityClient and Statsig.Options.observability_client let applications forward SDK metrics and errors to their observability backend.
• Java, Go, .NET, PHP, C++ (shared FFI):
  • gRPC websocket streaming to the Statsig Forward Proxy is now enabled in the shared native library.
• Java:
  • SpecAdapterType and AuthenticationMode constants simplify configuring spec adapters and authentication.

Improvements & Fixes

• All SDKs (rust core): automatic exposures preserve the contextual bandit's explore suffix in the rule ID.
• PHP: request teardown stops the shared runtime after flushing events, preventing native-library unload crashes on Windows/IIS.
• Go: persistent-storage callbacks release native argument memory and retain safely terminated load results, fixing memory leaks and unsafe reads.
• Java: unset or non-positive spec-adapter initialization timeouts now use the core default of 3,000 ms.

Included In This Release

• 56e2cbe80083bbc1f617ea3bc009f80f46e60a57 statsig-kong[bot]
  • [automated] chore: bump version to 0.23.1-beta.2609230207 (#3205)
• da7bfcd9c6a8ce381954a56e7420a14fc635e113 Kenneth Yeh
  • Fix the node core RC bump workflow: pin pnpm, reclaim runner disk, raise the Node heap (#3203)
• 510d266b911a3523b08711f291dd51a00c6ee22c statsig-kong[bot]
  • [automated] chore: bump version to 0.23.1-beta.2609170207 (#3202)
• 826595dc5a35703440bdd11c8b198b5d7df6eba7 statsig-kong[bot]
  • [automated] chore: bump version to 0.23.1-rc.2609161923 (#3201)
• 75672df222781d33c8f53ad85081c6e43982b6ef statsig-kong[bot]
  • [automated] sync rc with main (#3200)
• 4c71556 statsig-kong[bot]
  • [automated] chore: bump version to 0.23.1-beta.2609160206 (#3198)
• 46a0795 Jacob O'Quinn
  • STADXP-457: Preserve CMAB explore suffix in automatic exposures (#3196)
• 1f569a6 statsig-kong[bot]
  • [automated] chore: bump version to 0.23.1-beta.2609100206 (#3195)
• dd8201d Jacob O'Quinn
  • STADXP-435 Restore the PHP scheduled benchmark (#3194)
• e77a8ba statsig-kong[bot]
  • [automated] chore: bump version to 0.23.1-beta.2609090206 (#3193)
• 2dd959f Kenneth Yeh
  • [STADXP-359] PHP: stop the shared runtime during request teardown (#3179)
• 661a440 Kenneth Yeh
  • feat(go): add Contains and GetParameterList for parameter key existence (STADXP-353) (#3177)
• 1d23146 Peter Zhu
  • [S2SDK-111] elixir: expose ObservabilityClient on StatsigOptions (#3051)
• dd091f9 statsig-kong[bot]
  • [automated] chore: bump version to 0.23.0-rc.1 (#3191)
• 5c1906e statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-beta.2609040206 (#3186)
• 19c796a Peter Zhu
  • feat(java/ffi): enable gRPC websocket streaming (with_grpc) [S2SDK-146] (#3066)
• 39ed8e6 Kenneth Yeh
  • fix(ci): split Go package verification into as-shipped and upgraded coverage (#3184)
• cb5cb16 statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-beta.2609030212 (#3183)
• bff4319 Peter Zhu
  • [STADXP-229] go: free persistent-storage FFI args + NUL-terminate load result (#3141)
• 0537018 Jacob O'Quinn
  • CI: verify and apply docs from private tooling (#3163)
• 2100071 Jacob O'Quinn
  • fix: assert thread-count delta instead of absolute ceiling in NumThreads test (#3165)
• 63559fe statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-beta.2609020216 (#3170)
• 125681f statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-rc.2609012332 (#3169)
• d6c4469 statsig-kong[bot]
  • [automated] sync rc with main (#3168)

Included In This Release

• 02a7942 statsig-kong[bot]
  • chore: bump version to 0.23.1-rc.2609161922
• cb5778d Xin Li (Bot)
  • [automated] sync rc with main
• 4c71556 statsig-kong[bot]
  • [automated] chore: bump version to 0.23.1-beta.2609160206 (#3198)
• 46a0795 Jacob O'Quinn
  • STADXP-457: Preserve CMAB explore suffix in automatic exposures (#3196)
• 1f569a6 statsig-kong[bot]
  • [automated] chore: bump version to 0.23.1-beta.2609100206 (#3195)
• dd8201d Jacob O'Quinn
  • STADXP-435 Restore the PHP scheduled benchmark (#3194)
• e77a8ba statsig-kong[bot]
  • [automated] chore: bump version to 0.23.1-beta.2609090206 (#3193)
• 2dd959f Kenneth Yeh
  • [STADXP-359] PHP: stop the shared runtime during request teardown (#3179)
• 661a440 Kenneth Yeh
  • feat(go): add Contains and GetParameterList for parameter key existence (STADXP-353) (#3177)
• 1d23146 Peter Zhu
  • [S2SDK-111] elixir: expose ObservabilityClient on StatsigOptions (#3051)
• dd091f9 statsig-kong[bot]
  • [automated] chore: bump version to 0.23.0-rc.1 (#3191)
• 5c1906e statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-beta.2609040206 (#3186)
• 19c796a Peter Zhu
  • feat(java/ffi): enable gRPC websocket streaming (with_grpc) [S2SDK-146] (#3066)
• 39ed8e6 Kenneth Yeh
  • fix(ci): split Go package verification into as-shipped and upgraded coverage (#3184)
• cb5cb16 statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-beta.2609030212 (#3183)
• bff4319 Peter Zhu
  • [STADXP-229] go: free persistent-storage FFI args + NUL-terminate load result (#3141)
• 0537018 Jacob O'Quinn
  • CI: verify and apply docs from private tooling (#3163)
• 2100071 Jacob O'Quinn
  • fix: assert thread-count delta instead of absolute ceiling in NumThreads test (#3165)
• 63559fe statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-beta.2609020216 (#3170)
• 125681f statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-rc.2609012332 (#3169)
• d6c4469 statsig-kong[bot]
  • [automated] sync rc with main (#3168)

Full Changelog: 0.23.0...0.23.1

Breaking Changes

• None.

New Features

• Node.js:
  • getLayerList() — Enumerate layer names in the current config snapshot without evaluating a user or logging an exposure.
• Java:
  • getLayerList() — Enumerate layer names in the current config snapshot without evaluating a user or logging an exposure.
• Python:
  • get_layer_list() — Enumerate layer names in the current config snapshot without evaluating a user or logging an exposure.
  • SDK event subscriptions — subscribe(), unsubscribe(), unsubscribe_by_id(), and unsubscribe_all() now support specs_updated, gate/config/experiment/layer evaluation events, and *. Callbacks receive the event payload as a dictionary.
• Rust:
  • None.
• .NET:
  • None.
• Elixir:
  • get_parameter_store_list() — Enumerate Parameter Store names, completing the Elixir entity-list API surface.
• Go:
  • GetLayerList() — Enumerate layer names in the current config snapshot without evaluating a user or logging an exposure.
• PHP:
  • getParameterStoreList() — Enumerate Parameter Store names, completing the PHP entity-list API surface.

Improvements & Fixes

• Node.js:
  • None.
• Java:
  • Harden native-library loading so musl-detection and other resolver failures cannot crash SDK initialization.
  • Add the statsig.skip.musl.detection system property and preserve thread interrupt status during fallback handling.
• Python:
  • None.
• Rust:
  • Box tonic::Status inside StatsigGrpcErr, reducing the gRPC error enum’s size and restoring compatibility with the corrected clippy::result_large_err lint. This does not change public behavior.
• .NET:
  • None.
• Elixir:
  • None.
• Go:
  • None.
• PHP:
  • None.

Included In This Release

• d3a1aee statsig-kong[bot]
  • chore: bump version to 0.22.0-rc.2609012331
• 469b04f Xin Li (Bot)
  • [automated] sync rc with main
• 7fcd024 Jacob O'Quinn
  • [release] 0.22.0-rc.2608272101 - Layer List APIs, Parameter Store List APIs, Python SDK Event Subscriptions, and Java Native-Loader Hardening (#3162)
• 0ed02e0 statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-beta.2608270338 (#3160)
• a10ad64 Kenneth Yeh
  • [S2SDK-55] Python: expose specs_updated event subscription (#2982)
• cb9b9ff Jacob O'Quinn
  • fix: box tonic::Status in StatsigGrpcErr to satisfy clippy::result_large_err (#3156)
• df3c0cc statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-beta.2608260228 (#3157)
• 79fb718 statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-rc.2608242236 (#3152)
• f7089c4 Jacob O'Quinn
  • [release] 0.22.0-rc.2608242235 - [rc] (#3151)
• f436de7 statsig-kong[bot]
  • [automated] chore: bump version to 0.22.1-beta.2608220222 (#3150)
• 1a7966e Kenneth Yeh
  • fix(java): keep musl-detection failures from crashing SDK init (#3083)
• f9120d3 statsig-kong[bot]
  • [automated] chore: bump version to 0.22.1-beta.2608210228 (#3149)
• 037a2f6 Jacob O'Quinn
  • [STADXP-89] PHP: expose getParameterStoreList (#3139)
• 559055f Jacob O'Quinn
  • [STADXP-91] Elixir: expose get_parameter_store_list (#3140)
• 4117b19 Jacob O'Quinn
  • [STADXP-340] go: expose GetLayerList (#3145)
• 57f2a23 Jacob O'Quinn
  • [STADXP-339] java: expose getLayerList (#3144)
• eebd40c statsig-kong[bot]
  • [automated] chore: bump version to 0.22.1-beta.2608200223 (#3147)
• 0c57c30 Jacob O'Quinn
  • [STADXP-338] python: expose get_layer_list (#3143)
• 978c866 Jacob O'Quinn
  • [STADXP-337] node: expose get_layer_list (#3142)
• 53d0b6b statsig-kong[bot]
  • [automated] chore: bump version to 0.22.1-beta.2608150221 (#3138)
• 5c62915 statsig-kong[bot]
  • [automated] chore: bump version to 0.22.0-rc.1 (#3137)
• 52c8a14 statsig-kong[bot]
  • [automated] chore: bump version to 0.21.1-beta.2608130252 (#3129)
• 2623332 statsig-kong[bot]
  • [automated] chore: bump version to 0.21.1-rc.2608122242 (#3128)
• 5a09d1f statsig-kong[bot]
  • [automated] sync rc with main (#3127)

Full Changelog: 0.22.0...0.23.0

Breaking Changes

• N/A

New Features

• Node.js:
  • getAutotuneList() — enumerate autotune configs, matching the existing gate/config/experiment/parameter-store list methods.
  • getExperimentByGroupIdAdvanced() — completes the experiment group-targeting API set (getExperimentByGroupName / overrideExperimentByGroupName already
    existed).
• Java:
  • getAutotuneList() — enumerate autotune configs, matching the existing entity-list methods.
• Python:
  • get_autotune_list() — enumerate autotune configs.
  • get_experiment_by_group_name() and get_experiment_by_group_id_advanced() — experiment group-targeting getters.
• Rust:
  • New id_lists_request_timeout_ms StatsigOption — configurable per-request timeout for ID list manifest fetches and downloads (previously hardcoded to 10s;
    default unchanged when unset). Exposed in all SDK bindings.
• .NET:
  • GetAutotuneList() — enumerate autotune configs.
  • GetExperimentByGroupName() and GetExperimentByGroupIdAdvanced() — experiment group-targeting getters.
• Elixir:
  • get_autotune_list/0 — enumerate autotune configs.
  • get_experiment_by_group_name, get_experiment_by_group_id_advanced, and override_experiment_by_group_name — experiment group-targeting APIs.
• Go:
  • Entity-list methods: GetFeatureGateList, GetDynamicConfigList, GetExperimentList, GetAutotuneList, GetParameterStoreList.
  • Experiment group-targeting APIs: GetExperimentByGroupName, GetExperimentByGroupIDAdvanced, OverrideExperimentByGroupName.
  • WithObservabilityClient on StatsigOptionsBuilder — observability clients were previously silently dropped when configured.
• PHP:
  • getAutotuneList() — enumerate autotune configs.
  • getExperimentByGroupName() and getExperimentByGroupIdAdvanced() — experiment group-targeting getters.
• C++:
  • getAutotuneList() — enumerate autotune configs.
  • getExperimentByGroupName, getExperimentByGroupIdAdvanced, and overrideExperimentByGroupName — experiment group-targeting APIs.

Improvements & Fixes

• Node.js: N/A
• Java: N/A
• Python: N/A
• Rust: N/A
• .NET: N/A
• Elixir: N/A

Included In This Release

• 57f8cb2 statsig-kong[bot]
  • chore: bump version to 0.19.9-rc.2607090504
• 4bdd820 Xin Li (Bot)
  • [automated] sync rc with main
• a2f52f8 statsig-kong[bot]
  • [automated] chore: bump version to 0.19.9-beta.2607090302 (#3037)
• 6079d5d Peter Zhu
  • fix(php): warm allocator before baselining MemoryLeakTest RSS (#3016)
• 49dceae Peter Zhu
  • [S2SDK-124] python: add experiment group-targeting getters (#3026)
• 7be0809 Peter Zhu
  • [S2SDK-125] dotnet: add experiment group-targeting getters (#3029)
• fc57107 Peter Zhu
  • [S2SDK-126] php: add experiment group-targeting getters (#3024)
• a67dfd0 Peter Zhu
  • [S2SDK-128] elixir: expose experiment group-targeting APIs (#3027)
• 9919da7 Peter Zhu
  • [S2SDK-127] cpp: expose experiment group-targeting APIs (#3025)
• a14cda0 Peter Zhu
  • [S2SDK-108] go: expose WithObservabilityClient on StatsigOptionsBuilder (#3028)
• 50a1cfa statsig-kong[bot]
  • [automated] chore: bump version to 0.19.9-beta.2607080301 (#3035)
• 97fa17a Peter Zhu
  • [S2SDK-123] node: expose getExperimentByGroupIdAdvanced (#3023)
• 29734ee Peter Zhu
  • [S2SDK-82] php: expose getAutotuneList (#3011)
• d0137c0 Peter Zhu
  • [S2SDK-85] python: add get_autotune_list test (#3022)
• 95801b4 Peter Zhu
  • [S2SDK-84] node: add getAutotuneList test (#3021)
• 03cf5fe Peter Zhu
  • [S2SDK-81] dotnet: expose GetAutotuneList (#3012)
• 270de40 Peter Zhu
  • [S2SDK-45] Make ID list request timeout configurable (#3015)
• 993fd58 Peter Zhu
  • [S2SDK-83] cpp: expose getAutotuneList (#3010)
• a280ad3 statsig-kong[bot]
  • [automated] chore: bump version to 0.19.9-beta.2607020303 (#3031)
• e5b3266 Peter Zhu
  • [S2SDK-87] elixir: expose autotune list (#3009)
• e6d2b2f Peter Zhu
  • [S2SDK-86] java: expose getAutotuneList (#3008)
• 1bd2cf6 Peter Zhu
  • fix(ci): strip debug info from rust test build to stop linker Bus error (#3017)
• 1e53250 Peter Zhu
  • [S2SDK-85] python: expose get_autotune_list (#3007)
• 17bb201 Peter Zhu
  • [S2SDK-84] node: expose getAutotuneList (#3006)
• c1d8ade Peter Zhu
  • [S2SDK-77] core: add get_autotune_list test (binding-parity baseline) (#3005)
• 1e48297 Peter Zhu
  • [S2SDK-71] Go: expose gate/experiment/dynamic-config/autotune/parameter-store list methods (#3000)
• f44f8fb statsig-kong[bot]
  • [automated] chore: bump version to 0.19.9-rc.2607010924 (#3020)
• b3070ef statsig-kong[bot]
  • chore: bump version to 0.19.9-rc.2607010923
• b4c5713 statsig-kong[bot]
  • [automated] sync rc with main (#3019)
• eb8ae01 Xin Li (Bot)
  • [automated] sync rc with main

Full Changelog: 0.19.8...0.20.0