python-lmdb

Universal Python binding for the LMDB 'Lightning' Database

This is a universal Python binding for the LMDB 'Lightning' Database. LMDB is a tiny database with the following properties: * Ordered map interface (keys are always lexicographically sorted). * Reader/writer transactions: readers don’t block writers, writers don’t block readers. Each environment supports one concurrent write transaction. * Cheap read transactions. * Environments may be opened by multiple processes on the same host. * Multiple named databases may be created with transactions covering all named databases. * Memory mapped, allowing for zero copy lookup and iteration. This is optionally exposed to Python using the buffer() interface. * Maintenance requires no external process or background threads. * No application-level caching is required: LMDB uses the operating system’s buffer cache.