If developing software , there's essential to appreciate the distinct roles of HLD and LLD . HLD provides a overall picture of the system , describing the principal parts and their interactions without detailed implementation specifics. In contrast , Low-level design delves into the practical speci

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