fix: Fixed issue with context cancelled error leading to connection spikes on Primary instances #3190
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Issue: After upgrading from 9.5.1 to 9.7.0, we noticed the spikes in connections to Master/ Primary nodes and also reads are happening from Master nodes. Also noticed increase in pool_conn_total_current metrics.
Environment: AWS Cloud, Elasticache Redis with Cluster Mode
Cause: After debugging, we noticed that nodes are marked as failed when the
context.Cancellederror is raisedgo-redis/osscluster.go
Line 1324 in 930d904
We tested this by deploying the change from my Fork and noticed improvements. Elasticache Cluster Current Connections Screenshot:
FYI: My first PR to go-redis. Happy to fix if any concerns.