# Max Memory monitor

The Max Memory monitor checks if the amount or memory used in your Redis instance has grown over a certain limit. This monitor is quite important to activate on production systems as it will alert in time for upgrading or cleaning the Redis instance before it becomes full and it starts malfunctioning.

<figure><img src="/files/33CZ9PhK4jsl97kUkf2L" alt=""><figcaption></figcaption></figure>

The recommended threshold should be something around 80% of its full capacity. As all Redis hosts do not always report the maximum memory capacity, this monitor requires you to specify a certain amount of Megabytes that would be your threshold. Remember that 1Gb is about 1024Mb.


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