If developing applications, there's necessary to appreciate the distinct roles of HLD and LLD . Top-level design provides a larger perspective of the application , outlining the principal parts and their relationships without granular realization specifics. On the other hand, Low-level design delve
Caching Strategies Explained: Patterns, TTLs, Pitfalls (2026)
Caching Strategies Start With One Question: How Stale Can This Data Be? Most caching answers jump straight to Redis. The stronger answer starts one step earlier. Caching is a deliberate trade of freshness for speed, so the first thing to establish is how much staleness the product can tolerate. A pr