stm-containers

Containers for STM

https://github.com/nikita-volkov/stm-containers

Version on this page:0.2.6
LTS Haskell 24.16:1.2.1.1
Stackage Nightly 2025-10-24:1.2.1.1
Latest on Hackage:1.2.1.1

See all snapshots stm-containers appears in

MIT licensed and maintained by Nikita Volkov
This version can be pinned in stack with:stm-containers-0.2.6@sha256:ffa68a88dd497a56ad8b5fa322e158b01ddabcb4bbe309b33fdc219138aa5323,8764

Module documentation for 0.2.6

  • STMContainers
    • STMContainers.Bimap
    • STMContainers.Map
    • STMContainers.Multimap
    • STMContainers.Set
Used by 1 package in lts-0.3(full list with versions):
slave-thread

This library is based on an STM-specialized implementation of a Hash Array Mapped Trie. It provides efficient implementations of Map, Set and other data structures, which are slightly slower than their counterparts from "unordered-containers", but scale very well on concurrent access patterns.

For details on performance of the library see this blog post.