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What is ROSEDB

rosedb is a lightweight, fast and reliable key/value storage engine based on Bitcask storage model.

The design of Bitcask was inspired, in part, by log-structured filesystems and log file merging.

Status

rosedb is well tested and ready for production use. There are serveral projects using rosedb in production as a storage engine.

Didn't find the feature you want? Feel free to open an issue or PR, we are in active development.

Design overview

RoseDB log files are using the WAL(Write Ahead Log) as backend, which are append-only files with block cache.

wal: https://github.com/rosedblabs/wal

Key features

Strengths

Weaknesses

Gettings Started

Basic operations

package main

import "github.com/rosedblabs/rosedb/v2"

func main() {
	// specify the options
	options := rosedb.DefaultOptions
	options.DirPath = "/tmp/rosedb_basic"

	// open a database
	db, err := rosedb.Open(options)
	if err != nil {
		panic(err)
	}
	defer func() {
		_ = db.Close()
	}()

	// set a key
	err = db.Put([]byte("name"), []byte("rosedb"))
	if err != nil {
		panic(err)
	}

	// get a key
	val, err := db.Get([]byte("name"))
	if err != nil {
		panic(err)
	}
	println(string(val))

	// delete a key
	err = db.Delete([]byte("name"))
	if err != nil {
		panic(err)
	}
}

Batch operations

	// create a batch
	batch := db.NewBatch(rosedb.DefaultBatchOptions)

	// set a key
	_ = batch.Put([]byte("name"), []byte("rosedb"))

	// get a key
	val, _ := batch.Get([]byte("name"))
	println(string(val))

	// delete a key
	_ = batch.Delete([]byte("name"))

	// commit the batch
	_ = batch.Commit()

see the examples for more details.

Community

Welcome to join the Slack channel and Discussions to connect with RoseDB team developers and other users.

Contributors