A multi-line description of two to three lines: how a modern CDN actually works — edge routing, request coalescing, image/video transformation, the cache-key engineering that decides hit rate, and where the big providers differ.
Caching
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A Modern CDN, Honestly -
Redis Architecture and Persistence Redis data structures and their use cases, RDB vs AOF vs hybrid persistence, Redis Sentinel for high availability, Redis Cluster for horizontal scaling with hash slots, eviction policies, diagnostic commands, and an honest look at when Redis is the right tool.
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Semantic Caching for LLM Applications: Cutting Cost and Latency How embedding-based semantic caching works, why threshold tuning is the hardest part, cache invalidation patterns that prevent staleness, and practical implementations with GPTCache, LiteLLM, and a from-scratch Redis + FastAPI setup.
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Caching Strategies for Performance How to implement caching effectively at different layers of your application.