When creating software , it's necessary to comprehend the separate roles of top-level design and LLD . HLD provides a broader picture of the project, illustrating the core modules and their interactions excluding detailed implementation specifics. In contrast , LLD descends into the practical det

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