Redis MASTERDOWN Link with MASTER is down and slave-serve-stale-data is set to 'no'

What is Redis MASTERDOWN Link with MASTER is down and slave-serve-stale-data is set to 'no'

Verify the connectivity between the Redis master and slave instances:ping <master-hostname or IP> to ensure network connectivity.Check if the Redis master instance is running:On the master host, run redis-cli ping. If it responds with PONG, the master is running.Review the Redis master and slave logs for any errors or warnings that indicate why the link is down:Typically found at /var/log/redis/redis-server.log.Attempt to manually reconnect the slave to the master:On the slave instance, execute redis-cli -h <slave-host> -p <slave-port> SLAVEOF <master-hostname or IP> <master-port>.Monitor key metrics:Use redis-cli info replication to check the replication status and any error messages.Check the network latency and throughput between master and slave if possible, to ensure there isn't a network bottleneck causing the issue.