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Corentin GS

6mo ago

Teaching Go for cloud-native microservices to backend beginners. Self-taught developer with 5 years of experience. Making the practical course I wish existed.

Context Leaks: The Invisible Technical Debt Draining Your Go Systems
Corentin GS

In Go, context leaks are silent killers.

They don't raise alarms. They don’t crash your app on day one. But over time, unreleased goroutines and dangling contexts accumulate like toxic waste—silently consuming memory, degrading performance, and eroding system reliability.

They're technical debt you don’t see until it’s too late.

Every time a context.WithCancel is never called, or a goroutine outlives its purpose, your system pays a hidden cost. These leaks act like gumption traps, draining both your server’s vitality and your team’s morale, memory spikes. Latency creeps. Logs flood with cryptic timeouts. Debugging becomes a nightmare.

And the worst part? It all looks fine in development.

The solution isn’t magic—it’s discipline.

Build structured cancellation trees. Pass context consistently and cancel it predictably. Profile with tools like pprof and go tool trace to reveal what’s lurking beneath the surface. Treat goroutines as resources to be released, not just launched.

Because context leaks don’t make noise.

They make systems fragile.

And in production, fragility costs you more than just uptime—it costs you trust.

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