Redis Ping command
Redis Ping command uses the client sends a PING to the Redis server, if the server is functioning properly, then returns a PONG.
Usually used to test the server connection is still in force, or for measuring the delay value.
grammar
redis Ping basic command syntax is as follows:
redis 127.0.0.1:6379> PING
Available versions
> = 1.0.0
return value
If the connection is normal returns a PONG, otherwise it returns a connection error.
Examples
# 客户端和服务器连接正常 redis 127.0.0.1:6379> PING PONG # 客户端和服务器连接不正常(网络不正常或服务器未能正常运行) redis 127.0.0.1:6379> PING Could not connect to Redis at 127.0.0.1:6379: Connection refused