Redis Pttl command
Redis Pttl command in milliseconds return key remaining expiration time.
grammar
redis Pttl basic command syntax is as follows:
redis 127.0.0.1:6379> PTTL KEY_NAME
Available versions
> = 2.6.0
return value
When the key does not exist, it returns -2. When the key is present but not set the remaining lifetime, it returns -1. Otherwise, the remaining survival time, in milliseconds, the return key.
Note: Redis 2.8 ago, when the key does not exist or is not set key remaining lifetime, the command returns -1.
Examples
# 不存在的 key redis> FLUSHDB OK redis> PTTL key (integer) -2 # key 存在,但没有设置剩余生存时间 redis> SET key value OK redis> PTTL key (integer) -1 # 有剩余生存时间的 key redis> PEXPIRE key 10086 (integer) 1 redis> PTTL key (integer) 6179