Software Transactional Memory (1997)

This page summarizes the projects mentioned and recommended in the original post on

Our great sponsors
  • Onboard AI - Learn any GitHub repo in 59 seconds
  • InfluxDB - Collect and Analyze Billions of Data Points in Real Time
  • SaaSHub - Software Alternatives and Reviews
  • js-db

    Key-Value DB for TypeScript and JavaScript Applications (by MatrixAI)

    I've been working on a JS database to support optimistic concurrency control. I did some research and arrived on 2 seemingly related concepts but from independent research lines. Software transactional memory in functional programming/Haskell land versus snapshot isolation in database research.

    After reading them both, I asked this unanswered question on SO: My theory is that STM is the same as SI, but most SI database implementations don't just do value comparisons, but actually check a logical timestamp. This is probably done for performance reasons as databases handle larger pieces of data than functions would when using STM.

    Along the way I also discovered SSI serializable snapshot isolation but it isn't yet available in rocksdb but cockroachdb apparently has a fork of rocksdb with it but I couldn't find it.

    Anyway the db library which wraps around rocksdb is available to be used embedded in any nodejs program at

  • stm-containers

    Containers for STM

    I think you are right about STM being roughly equivalent to snapshot isolation.

    What STM offers is an easy way to invent "containers for snapshotted values" aka TVars. Using them carefully may result in better scaling:

  • Onboard AI

    Learn any GitHub repo in 59 seconds. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at

  • stmx

    High performance Transactional Memory for Common Lisp

    Common Lisp has it too, via I believe it supports the Intel TSX stuff if present and falls back to a software implementation if not present.

  • stm-haskell

    Concurrent algorithms in Haskell using software transactional memory (STM monad)

    I have a repo with six sample algorithms of increasing complexity:

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

Suggest a related project

Related posts