forked from mirror/redcon
111 lines
2.2 KiB
Markdown
111 lines
2.2 KiB
Markdown
Redcon [GoDoc](https://godoc.org/github.com/tidwall/redcon?status.svg)](https://godoc.org/github.com/tidwall/redcon)
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======
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Super fast Redis RESP server implementation.
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Supports pipelining and telnet commands.
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There is only one function `ListenAndServe`, and one type `Conn`.
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Here's a full example of a Redis clone that accepts:
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- SET key value
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- GET key
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- DEL key
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- PING
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- QUIT
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You can run this example from a terminal:
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```sh
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go run examples/clone.go
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```
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```go
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package main
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import (
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"log"
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"strings"
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"sync"
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"github.com/tidwall/redcon"
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)
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var addr = ":6380"
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func main() {
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var mu sync.RWMutex
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var items = make(map[string]string)
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go log.Printf("started server at %s", addr)
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err := redcon.ListenAndServe(addr,
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func(conn redcon.Conn, commands [][]string) {
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for _, args := range commands {
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switch strings.ToLower(args[0]) {
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default:
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conn.WriteError("ERR unknown command '" + args[0] + "'")
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case "ping":
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conn.WriteString("PONG")
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case "quit":
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conn.WriteString("OK")
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conn.Close()
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case "set":
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if len(args) != 3 {
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conn.WriteError("ERR wrong number of arguments for '" + args[0] + "' command")
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continue
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}
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mu.Lock()
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items[args[1]] = args[2]
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mu.Unlock()
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conn.WriteString("OK")
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case "get":
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if len(args) != 2 {
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conn.WriteError("ERR wrong number of arguments for '" + args[0] + "' command")
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continue
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}
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mu.RLock()
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val, ok := items[args[1]]
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mu.RUnlock()
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if !ok {
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conn.WriteNull()
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} else {
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conn.WriteBulk(val)
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}
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case "del":
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if len(args) != 2 {
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conn.WriteError("ERR wrong number of arguments for '" + args[0] + "' command")
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continue
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}
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mu.Lock()
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_, ok := items[args[1]]
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delete(items, args[1])
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mu.Unlock()
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if !ok {
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conn.WriteInt(0)
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} else {
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conn.WriteInt(1)
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}
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}
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}
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},
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func(conn redcon.Conn) bool {
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log.Printf("accept: %s", conn.RemoteAddr())
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return true
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},
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func(conn redcon.Conn, err error) {
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log.Printf("closed: %s, err: %v", conn.RemoteAddr(), err)
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},
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)
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if err != nil {
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log.Fatal(err)
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}
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}
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```
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Contact
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-------
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Josh Baker [@tidwall](http://twitter.com/tidwall)
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License
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-------
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Redcon source code is available under the MIT [License](/LICENSE).
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