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crates.io · #3036 most downloaded on crates.io
A fast and ergonomic concurrent hash-table for read-heavy workloads.
Last release 1 months ago
21 Aug 2026
Release timing varies
gaps range from 9 days to 9 months
Most releases are documented
notes for 9 of 14 stable releases
3 versions withdrawn
withdrawn after publishing
5 years old
17 releases · first in 2021
One column per quarter.
Added the fast-barrier feature to allow opting out of process wide memory barriers, which can be expensive to initialize ( #100 ).
HashMap::retain no longer takes a mutable reference ( #80 ).
Remove use of 64-bit atomics ( #75 ).
Fix a soundness issue when using HashMap with key/value types that are aligned to less than 8 bytes. This is likely only relevant on 32-bit platforms
Fixed a bug in HashMap::retain that may lead to memory corruption ( #63 ).
HashMap::retain that may lead to memory corruption (#63).Updated seize to 0.5. This comes with improvements in performance as well as memory usage ( #62 ).
Added HashMap::remove_if ( #59 ).
Added HashMap::try_insert_with ( #49 ).
HashMap::try_insert_with (#49).HashMap and HashSet methods that take borrowed keys now use the more flexible Equivalent trait instead of Borrow (#45).rust-version crate metadata has been set to 1.72.0.Fixed incorrect bounds on keys and values for HashMap<K, V>: Sync ( #43 ).
Removed an accidental debug statement.
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
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