Context in Go: passing data, deadline, cancel - use correctly or die of performance
When I first coded in Go, I encountered a strange production bug: after running for 3-4 days, the service suddenly consumed 8GB of RAM and caused an OOM error. I spent the entire Friday afternoon debugging and finally discovered the issue: a goroutine never ended because I forgot to pass the context to the gRPC call. Each request leaked a goroutine, and after 100K requests, the server was overwhelmed.
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