When developing systems , it's necessary to comprehend the distinct roles of HLD and detailed design. High-level design provides a larger view of the system , describing the core modules and their connections without specific implementation specifics. Conversely , Detailed design goes into the engin

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