Understanding Go's Finalizer Mechanism and a Common Pitfall Leading to Memory Leaks

The article explains Go’s runtime finalizer mechanism, shows how a single blocked finalizer can stall all cleanup callbacks, and recounts a real‑world memory‑leak incident where an unrelated goroutine’s blocked finalizer for struct B prevented struct A’s resources from being released.

FinalizerGoRuntime

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Understanding Go's Finalizer Mechanism and a Common Pitfall Leading to Memory Leaks