Concerning creating applications, there's essential to appreciate the contrasting roles of HLD and LLD . Top-level design provides a overall picture of the system , outlining the principal modules and their connections excluding specific execution specifics. On the other hand, LLD goes into the tec

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