Redis HSET keys expire after few minutes

Getting started with Redis
1

I am trying to connect to a remote redis server and set keys using HSET command like below

hset ABCD:1105 balance 1000

I can able to see the Key using KEYS *

But after approx 1 minute the KEYS * returns empty (empty list or set) . Whereas TTL on the key returns -1.

This is the memory configuration in the redis server

 1) "masterauth"
 2) ""
 3) "maxmemory"
 4) "0"
 5) "maxmemory-samples"
 6) "5"
 7) "maxclients"
 8) "10000"
 9) "min-slaves-to-write"
10) "0"
11) "min-replicas-to-write"
12) "0"
13) "min-slaves-max-lag"
14) "10"
15) "min-replicas-max-lag"
16) "10"
17) "maxmemory-policy"
18) "noeviction"

Here the max memory policy is also noeviction. Then why the Keys are getting expired. Redis Server is running in Kubernetes cluster.

2

If there’s no TTL, and no eviction policy, then this shouldn’t be happening. Can you trying running the MONITOR command to see whether another process is somehow removing these keys?