Skip to content

byteally/lmdb-simple

 
 

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

33 Commits
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Repository files navigation

Simple Haskell API for LMDB

This package allows you to store arbitrary Haskell values in and retrieve them from a persistent Lightning Memory-mapped Database on disk.

LMDB is a high-performance ACID-compliant no-maintenance read-optimized key-value store. Any Haskell type with a Serialise instance can be stored in an LMDB database, or used as a key to index one.

This package provides a few different APIs for using LMDB:

  • The basic API provides transactional put and get functions to store and retrieve values from an LMDB database.

  • The extended API provides many functions similar to those in Data.Map, e.g. lookup, insert, delete, foldr, and so on.

  • The View API provides a read-only snapshot of an LMDB database that can be queried from pure code.

  • The DBRef API provides a mutable variable similar to IORef that is tied to a particular key in an LMDB database.