When building systems , there's essential to comprehend the contrasting roles of HLD and low-level design . HLD provides a overall picture of the project, outlining the major modules and their connections omitting specific realization specifics. On the other hand, Low-level design descends into the
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 website to establish is how much staleness the product can tolera