A deep technical analysis of V8's garbage collector developments from 2023-2025, covering three major initiatives: the sandbox security effort (20% of work) implementing hardware memory protection and pointer compression, the Oilpan integration (40%) bringing conservative stack scanning and generational collection to C++ objects, and shared-memory multi-threading support (20%) for WebAssembly. The review examines 1600 commits, discusses implementation challenges like alignment issues and heuristics tuning, and notes the removal of third-party heap API support.
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