TOP-LEVEL DESIGN VS. LOW-LEVEL DESIGN : RECOGNIZING THE KEY VARIATIONS

When building systems , there's essential to appreciate the distinct roles of HLD and detailed design. High-level design provides a larger view of the system , describing the major modules and their interactions without specific implementation specifics. On the other hand, LLD descends into the e

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