一个快速的Key-Value存储引擎：forestdb

jopen 11年前

ForestDB是一个快速的Key-Value存储引擎，由 Couchbase Caching 和 Storage 团队开发，并且它的主要索引结构构建自 Hierarchical B+-Tree based Trie，叫做 HB+-Trie。

主要特性

Keys and values are treated as an arbitrary binary.
Applications can supply a custom compare function to support a customized key order.
A value can be retrieved by its sequence number or disk offset in addition to a key.
Write-Ahead Logging (WAL) and its in-memory index are used to reduce the main index lookup / update overhead.
Multi-Version Concurrency Control (MVCC) support and append-only storage layer.
Multiple snapshot instances can be created from a given ForestDB instance to provide different views of database.
Rollback is supported to revert the database to a specific point.
Ranged iteration by keys or sequence numbers is supported for a partial or full range lookup operation.
Manual or auto compaction can be configured per ForestDB database file.
Transactional support with read_committed or read_uncommitted isolation level.