英[p??] 美[p??]
n.<non-positive>bang;the bang of bullets flying;Internet Packet Explorer
v. <Not positive> Make a banging sound
Third person singular: pings Plural: pings Present participle: pinging Past tense: pinged Past participle: pinged
redis PING command syntax
Function:Use the client to send a PING to the Redis server. If the server is operating normally, a PONG will be returned.
Syntax: PING
Description: Usually used to test whether the connection to the server is still valid, or to measure the latency value.
Available versions: >= 1.0.0
Time complexity: O(1)
Return: If the connection is normal, return a PONG, otherwise return a connection error.
redis PING command example
# 客戶端和服務(wù)器連接正常 redis> PING PONG # 客戶端和服務(wù)器連接不正常(網(wǎng)絡(luò)不正?；蚍?wù)器未能正常運行) redis 127.0.0.1:6379> PING Could not connect to Redis at 127.0.0.1:6379: Connection refused