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Arena Allocation in Rust: Fast Memory for Short-Lived Objects: Revision history

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15 November 2025

  • curprev 17:2317:23, 15 November 2025 PC talk contribs 8,744 bytes +8,744 Created page with "You know that feeling when your Rust code is beautiful — but suddenly, the profiler says your allocator is eating up 40% of runtime?
Yeah. That’s when you meet arena allocation — the unsung hero of high-performance Rust systems. Arena allocation is a powerful memory management strategy that trades a bit of flexibility for raw speed.
It’s the technique used in game engines, compilers, and even Rust’s own internal data structures (yes, rustc itself uses..."
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