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Caching Is Quietly Corrupting Our QA Signal

February 6, 2026 — Jaren

Branch vs staging QA testing environment comparison showing clean isolated branch deployment versus staging environment with accumulated cache and session state causing test inconsistencies

Branch testing passes cleanly. Same code hits staging and behavior shifts between testers. No redeployment. No code changes. Just invisible client state corrupting validation. Here's how unmanaged caching breaks QA determinism and what to check instead of arguing about it.

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