Why is the connection not guaranteed to be valid?

[jorge-lavin]

About this code snippet:

https://github.com/xetorthio/jedis/blob/72e5b1c6184047ba746de0e28de2b788adc898b9/src/main/java/redis/clients/jedis/JedisSlotBasedConnectionHandler.java#L64-L81

• Why is the connection not guaranteed to be valid?
• How to obtain a valid connection?

Jedis version:

2.9.3

Java version:

1.8.151

[gkorland]

• Why is the connection not guaranteed to be valid?
  Cause slots might moved.

• How to obtain a valid connection?
  You can't since it's a distributed system, you can test the connection after you get and if the server doesn't return "MOVED" you are ok