Redis: Max Number of Clients Reached

[Uxio0]

Describe the bug

• We are facing a Redis: Max Number of Clients Reached on the web instance of the transaction service
• Multiple endpoints seem to be affected (all-transactions, balances)
• Workers seem to be ok

Expected behavior No issues

Proposed solution

• Add limit for the Redis Connection Pool and switch to BlockingConnectionPool: https://redis-py.readthedocs.io/en/stable/connections.html#connection-pools
• Add timeout for connections on the server and add health-check: https://github.com/redis/redis-py#connections . I don't think this will work.
• Increase number of connections on the server

Additional context Last 8 hours

Last week

[luarx]

We are going to increment redis maxclients and check how it works

[Uxio0]

@luarx @moisses89 @fmrsabino Do you think we can close this for now?