stm-containers

Containers for STM

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

Version on this page:1.1.0.2@rev:1
LTS Haskell 24.28:1.2.2
Stackage Nightly 2026-01-19:1.2.2
Latest on Hackage:1.2.2

See all snapshots stm-containers appears in

MIT licensed and maintained by Nikita Volkov
This version can be pinned in stack with:stm-containers-1.1.0.2@sha256:68f11870da794c570245f03fff98bc06251443780315324a7f2b01a07a1ebe91,3299

Module documentation for 1.1.0.2

This library is based on an STM-specialized implementation of Hash Array Mapped Trie. It provides efficient implementations of Map, Set and other data structures, which starting from version 1 perform even better than their counterparts from "unordered-containers", but also scale well on concurrent access patterns.

For details on performance of the library, which are a bit outdated, see this blog post.