On an ongoing basis (using ELK, Loglogic, Splunk, or other monitoring tools), you can keep track of the health of the Memcached pools.
| Metric
|
Field Name / Computation
|
Notes
|
| Hit rate
|
get_hits/(get_hits+get_misses)
|
The computed ratio should be nearly equal to 1 at that collection time.
|
| Fill ratio/percent
|
bytes/limit_maxbytes
|
Low water mark 85%; High water mark 90%.
|
