Go 1.26: Stack vs Heap Allocation — Faster Code Without Changing a Line

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Keith Randall just published Allocating on the Stack on the Go blog. If you've ever profiled a Go service and seen a pile of tiny allocations from append growing a slice from zero, this one is worth reading. The gist: the Go 1.25 and 1.26 compilers can now keep slice backing stores on the stack in more situations than before. What actually changed The improvements landed in two stages. Go 1.25…

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