If building systems , it's essential to understand the distinct roles of HLD and LLD . Top-level design provides a broader picture of the system , outlining the principal modules and their interactions excluding granular realization specifics. In contrast , Detailed design goes into the engineer… Read More

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… Read More