When building software , there's necessary to understand the contrasting roles of high-level design and LLD . HLD provides a larger perspective of the system , outlining the principal modules and their interactions excluding granular implementation specifics. In contrast , Low-level design descends

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