The error message 'redis connection error 111' typically denotes a Connection Refused error. This error generally implies that the Redis server is not able to establish a connection, which can be due to several reasons:
Redis Server Not Running: The most common explanation is that there isn't a Redis server to connect to. This could mean the server isn't running or has crashed.
Network Issues: There might be network problems preventing your application from reaching the Redis server. It could be anything from faulty network cables to network interface issues.
Incorrect Host/Port: If the specified host or port in your configuration is incorrect, your application wouldn't find the Redis server and throw this error.
Firewall Restrictions: Sometimes, firewall rules can block certain ports, impeding the connection from being established between the client application and the Redis server.
Resolving this error involves addressing the potential causes listed above:
Ensure Redis Server Is Running: Check whether the Redis server is up and running. You can do this by running a simple command like
redis-cli ping. If the server is running fine, you'll get a "PONG" response.
Check Network Connections: Diagnose your network for any issues that could be preventing connections to the Redis server. This could involve checking the network cables, router, or other network devices.
Verify Host and Port: Confirm that you're using the correct host and port number to connect to the Redis server. You can usually find these details in the Redis configuration file.
Review Firewall Settings: Lastly, check your firewall settings. Make sure the port used by Redis isn't blocked. If it is, you'll need to modify your firewall rules to allow connections on that port.