Xiao Lou's Tech Notes

Mar 13, 2025 · Fundamentals

Master Go’s New Cleanup Functions and Weak Pointers for Safer Memory Management

Go 1.24 introduces runtime.AddCleanup and weak.Pointer, advanced garbage‑collector tools that let developers attach cleanup callbacks without retaining objects and safely cache objects via weak references, offering more precise memory management, eliminating finalizer pitfalls, and enabling custom unique‑package implementations.