I have a Drupal cluster of 3 servers that are using HAproxy (TCP) to handle communication with a Redis cluster of 3 nodes (used for caching) on which the sentinel service is active as well.
The Redis cluster has 1 main (master) node and 2 secondary (slave) nodes in replication mode.
I recently noticed that the avg_ttl is zero on one of the secondary (slave) nodes.
It's weird, I mean the data is synced between these nodes so they should have the same keys.
I checked the configuration and they almost have the same configuration in the redis.conf file.
Any idea what could this mean?
Thanks!
