When creating software , it's essential to understand the distinct roles of top-level design and detailed design. HLD provides a overall picture of the system , outlining the core parts and their relationships omitting granular implementation specifics. In contrast , LLD goes into the practical s

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