The Scaling Gauntlet, Pt. 3: Cache Rules Everything Around Me

Caching isn’t cheating—it’s how systems scale. In Part 3 of The Scaling Gauntlet, we explore how to avoid making the same expensive calls over and over, with practical caching patterns, real-world examples, Redis code snippets, and the hidden cost of poor invalidation. Learn how to cache with intent—and how to debug when it backfires.