Add ACID guarantees to any serializable Haskell data structure.

Version on this page:0.14.2
LTS Haskell 22.16:
Stackage Nightly 2024-04-12:
Latest on Hackage:

See all snapshots acid-state appears in

LicenseRef-PublicDomain licensed by David Himmelstrup
Maintained by Lemmih
This version can be pinned in stack with:acid-state-0.14.2@sha256:449b1ca6391f1b067028569e3a50dfbfb2a295d4d1176bfe45b24020047c7adf,2989

Use regular Haskell data structures as your database and get stronger ACID guarantees than most RDBMS offer.



  • createCheckpoint now cuts a new events file (bug #74)


  • fix bug in archiveLog that resulted in logs being moved prematurely (bug #22)
  • tweaks for GHC 8.0.x, template-haskell 2.11.x
  • fix compilation of benchmarks


  • fixes for cereal 0.5 while maintaining cereal 0.4 compatibility. IMPORTANT: cereal 0.5 / safecopy 0.9 change the serialization format of Float/Double. Migration should be performed automatically on old data. However, you should be aware that once you upgrade to safecopy 0.9 / cereal 0.5, your data will be migrated and not readable by older versions of your application which are compiled against safecopy 0.8 / cereal 0.4.

  • additional fixes for TH and kinded type variables