The error 'could not get resource from pool redis' pops up frequently when there's a glitch connecting to or losing connection with the Redis server. Typically, applications that rely on connection pooling to manage Redis server connections observe this error.
When the pool cannot provide a connection, it may mean that either the Redis server is down, the pool has hit its maximum capacity, or the Redis client has a misconfiguration or network issues.
To resolve this error, you can try several solutions. Firstly, ensure that the Redis server is working by checking its status or restarting it. Additionally, verify the network connectivity between the client and the server to identify any possible problems.
Another solution would be to increase the size of the connection pool by modifying the max number of connections allowed or tailoring other connection pool parameters. This approach guarantees that your application has enough connections to handle the workload.
For high availability and automatic failover, you might also consider using a Redis Sentinel setup. If one Redis instance fails, this setup allows the other instances to take over without causing downtime for your application.
Lastly, review your Redis client configuration to ensure that everything is set up correctly. Check that the client uses the appropriate host, port, and authentication credentials to connect to the Redis server.