Redis命令手册 Server(服务器) BGREWRITEAOF BGSAVE CLIENT GETNAME CLIENT KILL CLIENT LIST CLIENT SETNAME CONFIG GET CONFIG RESETSTAT CONFIG REWRITE 原子性重写 可用版本 返回值 测试 CONFIG SET DBSIZE DEBUG OBJECT DEBUG SEGFAULT FLUSHALL FLUSHDB INFO LASTSAVE MONITOR PSYNC SAVE SHUTDOWN SLAVEOF SLOWLOG SYNC TIME