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• 09:03, 22 November 2025 PC talk contribs created page He Migrated 100,000 Lines to Rust — Then Everything Broke (Created page with "500px The night the graphs went weird We flipped 20% of traffic to the shiny Rust service.
CPU fell. Latency… spiked.
Dashboards were green. Users were not. No one got fired. But it was close. This is the story of what actually broke in a large Rust migration at a bank-scale backend, why it broke, and how to fix it fast — without rewriting the rewrite. I’ll keep language simple. Short sections. Concrete code. No myths...")