System Design: Building Caching System!
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System Design: Building Caching System!
A cache is supposed to shield your database. Until one expired key turns it into the weapon that takes the whole thing down. We walk through what actually happens when a single hot key dies and 100,000 requests slam the database at the same instant, and the three moves that stop it: invalidation, Single Flight, and TTL jitter. 👉 Master ...
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