When building systems , there's necessary to appreciate the separate roles of top-level design and detailed design. High-level design provides a broader perspective of the application , outlining the core modules and their connections without detailed execution specifics. In contrast , LLD goes i

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