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Understanding Go's Sync.Map: From API to Hash Trie

Explore the current implementation of Go's sync.Map and its hash trie design.

With Go 1.24, the default implementation of sync.Map changed to an experimental hash trie. Go 1.26 made this the official implementation in the standard library. This article explores the current implementation, starting from a normal map and building up to the design of sync.Map.

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