The core separation between a Top-Level Plan (HLD) and a Implementation Architecture (LLD) lies in their scope . An HLD provides a general overview of the application , outlining the major modules and their check here interactions – i… Read More

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 t… Read More