rocksdb-haskell-jprupp

Haskell bindings for RocksDB

https://github.com/jprupp/rocksdb-haskell#readme

LTS Haskell 24.54:2.1.7
Stackage Nightly 2026-08-12:2.2.0
Latest on Hackage:2.2.0

See all snapshots rocksdb-haskell-jprupp appears in

BSD-3-Clause licensed
Maintained by JP Rupp
This version can be pinned in stack with:rocksdb-haskell-jprupp-2.2.0@sha256:688be97f64b5553561a238d3336c07fcfe9d454562ba6eee8e03d332c0ba3544,1623

Module documentation for 2.2.0

Used by 1 package in nightly-2026-08-12(full list with versions):
rocksdb-query

This library provides Haskell bindings to RocksDB

Development

Stack

stack build
stack test

Nix

nix develop
cabal build all
cabal test all

The shell includes GHC 9.8.4, cabal, haskell-language-server, fourmolu, hlint, and hoogle.

Changes

2.2.0

  • Move Iterator module to plain IO.
  • Properly manage read options in createSnapshot.
  • Add nix flake for development.
  • API allows manual database lifecycle management.

2.1.7

  • Simplify author name.

2.1.6

  • Refactor memory use further.
  • Improve tests.

2.1.5

  • Fix errors not releasing memory.

2.1.4

  • Add ResourceT support for snapshots and iterators.

2.1.3

  • Correct bug where database was ignoring prefix length config.

2.1.2

  • Correct bug when opening database with column families.

2.1.1

  • Expose ColumnFamily type.

2.1.0

  • Add support for column families.

2.0.0

  • Fork into a different project
  • Rewrite most of the code to make it faster and easier to use
  • Remove many features that I don’t need or want to maintain

1.0.1

  • Add support for UTF-8 characters in a database’s path

1.0.0

  • First version by Serokell

0.3x.0

  • ResourceT is no longer compulsory

0.2.0

  • requires LevelDB v1.7
  • support for filter policy (LevelDB v1.5), either custom or using the built-in bloom filter implementation
  • write batch values no longer require a memcpy to be early-finalizer-safe (introduced in 0.1.1)

0.1.0

  • memory (foreign pointers) is managed through ResourceT. Note that this requires to lift monadic actions inside the MonadResource monad, see the examples.
  • links against shared library (LevelDB v1.3 or higher)
  • LevelDB 1.3 API fully supported (including custom comparators, excluding custom environments)

0.0.x

  • experimental releases