When creating systems , there's essential to comprehend the contrasting roles of HLD and low-level design . High-level design provides a broader picture of the project, describing the core parts and their relationships excluding detailed realization specifics. On the other hand, Low-level design

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