If developing systems , there's essential to appreciate the separate roles of HLD and detailed design. High-level design provides a broader perspective of the system , illustrating the core components and their connections without granular execution specifics. In contrast , LLD delves into the t

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