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PTTL

Last updated
PTTL key
Group
Keys
Complexity
O(1)
Arity
2 (exactly, counting the command name)
Flags
read-only, fast
Keys
first 1, last 1, step 1
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PTTL returns how many milliseconds are left before key expires. Reading the time to live is not an access to the key.

Case RESP2 RESP3
The key has a time to live Integer: milliseconds left Integer
The key exists without a time to live Integer -1 Integer -1
The key does not exist Integer -2 Integer -2
127.0.0.1:6379> SET token "x" PX 2500
OK
127.0.0.1:6379> PTTL token
(integer) 2498
127.0.0.1:6379> PTTL missing
(integer) -2

Same as Redis 7 and Valkey 8.

TTL, NTTL, PEXPIRETIME, PEXPIRE