HIGH-LEVEL DESIGN VS. LLD : RECOGNIZING THE CRUCIAL DIFFERENCES

When developing systems , it's essential to understand the contrasting roles of HLD and LLD . Top-level design provides a broader perspective of the application , outlining the core modules and their connections without specific implementation specifics. Conversely , LLD descends into the practic

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