Redis ERR no such key

The specified key does not exist in Redis.
  1. Verify the existence of the key:
    • Run EXISTS <key> to check if the key actually exists in Redis.
  2. Check for typos in the key name:
    • Ensure you're using the correct key name without typos.
  3. Confirm the correct database is selected:
    • Use SELECT <db_index> to switch to the correct database where the key is supposed to exist.
  4. Check for key expiration:
    • Use TTL <key> to check if the key has a time-to-live set and might have expired.
  5. Verify network/connection issues:
    • Ensure your client is connected to the correct Redis server and port, e.g., PING command can help confirm connectivity.
  6. Audit recent commands for accidental deletion:
    • If logging is enabled and accessible, review recent commands to see if DEL <key> or similar commands were mistakenly issued.
  7. Check memory usage and eviction policies:
    • Use INFO memory to check current memory usage.
    • Use CONFIG GET maxmemory-policy to understand the eviction policy, which might be causing keys to be removed.
  8. If part of a cluster, ensure you're connected to the correct node:
    • Use CLUSTER NODES or CLUSTER KEYSLOT <key> to check if the key is managed by a different cluster node.

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Most-used commands
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