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The `LATENCY LATEST` command reports the latest latency events logged.
Each reported event has the following fields:
* Event name.
* Unix timestamp of the latest latency spike for the event.
* Latest event latency in millisecond.
* All-time maximum latency for this event.
"All-time" means the maximum latency since the Redis instance was
started, or the time that events were reset `LATENCY RESET`.
@examples
```
127.0.0.1:6379> debug sleep 1
OK
(1.00s)
127.0.0.1:6379> debug sleep .25
OK
127.0.0.1:6379> latency latest
1) 1) "command"
2) (integer) 1405067976
3) (integer) 251
4) (integer) 1001
```
For more information refer to the [Latency Monitoring Framework page][lm].
[lm]: /topics/latency-monitor
@return
@array-reply: specifically:
The command returns an array where each element is a four elements array
representing the event's name, timestamp, latest and all-time latency measurements.
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