When creating systems , there's necessary to appreciate the contrasting roles of HLD and detailed design. HLD provides a overall perspective of the system , illustrating the major parts and their relationships excluding granular execution specifics. In contrast , Detailed design goes into the techni

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