Developer fixes 15 bugs, cuts memory 10x, speeds up library 5x with Codex
cnakazawa · x · 2026-08-29
A developer used OpenAI Codex to fix 15 bugs, reduce memory usage by 10x, and improve performance by 5x on a Saturday afternoon. He shared the joy of unleashing 10 concurrent Codex sessions on a pre-LLM codebase to address long-standing performance and memory concerns.
Related event: Developer Uses 10 Parallel Codex Sessions to Revamp Legacy Codebase(2 posts)→
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