Redcon是一个采用Go开发的兼容Redis的Key/Value数据库。特点是简单、快速。
支持Redis的命令包括：
SETkeyvalue
GETkey
DELkey
PING
QUIT
示例代码：
package mainimport ( "log" "strings" "sync" "github.com/tidwall/redcon")var addr = ":6380"func main() { var mu sync.RWMutex var items = make(map[string][]byte) go log.Printf("started server at %s", addr) err := redcon.ListenAndServe(addr, func(conn redcon.Conn, cmd redcon.Command) { switch strings.ToLower(string(cmd.Args[0])) { default: conn.WriteError("ERR unknown command '" + string(cmd.Args[0]) + "'") case "ping": conn.WriteString("PONG") case "quit": conn.WriteString("OK") conn.Close() case "set": if len(cmd.Args) != 3 { conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command") return } mu.Lock() items[string(cmd.Args[1])] = cmd.Args[2] mu.Unlock() conn.WriteString("OK") case "get": if len(cmd.Args) != 2 { conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command") return } mu.RLock() val, ok := items[string(cmd.Args[1])] mu.RUnlock() if !ok { conn.WriteNull() } else { conn.WriteBulk(val) } case "del": if len(cmd.Args) != 2 { conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command") return } mu.Lock() _, ok := items[string(cmd.Args[1])] delete(items, string(cmd.Args[1])) mu.Unlock() if !ok { conn.WriteInt(0) } else { conn.WriteInt(1) } } }, func(conn redcon.Conn) bool { // use this function to accept or deny the connection. // log.Printf("accept: %s", conn.RemoteAddr()) return true }, func(conn redcon.Conn, err error) { // this is called when the connection has been closed // log.Printf("closed: %s, err: %v", conn.RemoteAddr(), err) }, ) if err != nil { log.Fatal(err) }}
评论