bitcask

A Bitcask (LSM+WAL) Key/Value Store written in Go.

Features

• Embeddable
• Builtin CLI
• Predictable read/write performance
• Low latecny
• High throughput (See: Performance

Install

$ go get github.com/prologic/bitcask

Usage (library)

Install the package into your project:

$ go get github.com/prologic/bitcask

package main

import (
    "log"

    "github.com/prologic/bitcask"
)

func main() {
    db, _ := bitcask.Open("/tmp/db")
    db.Set("Hello", []byte("World"))
    db.Close()
}

See the godoc for further documentation and other examples.

Usage (tool)

$ bitcask -p /tmp/db set Hello World
$ bitcask -p /tmp/db get Hello
World

Usage (server)

There is also a builtin very simple Redis-compatible server called bitcaskd:

$ ./bitcaskd ./tmp
INFO[0000] starting bitcaskd v0.0.7@146f777              bind=":6379" path=./tmp

Example session:

$ telnet localhost 6379
Trying ::1...
Connected to localhost.
Escape character is '^]'.
SET foo bar
+OK
GET foo
$3
bar
DEL foo
:1
GET foo
$-1
PING
+PONG
QUIT
+OK
Connection closed by foreign host.

Performance

Benchmarks run on a 11" Macbook with a 1.4Ghz Intel Core i7:

$ make bench
...
BenchmarkGet-4   	  300000	      5065 ns/op	     144 B/op	       4 allocs/op
BenchmarkPut-4   	  100000	     14640 ns/op	     699 B/op	       7 allocs/op

• ~180,000 reads/sec
• ~60,000 writes/sec

License

bitcask is licensed under the MIT License