If developing a software , it’s essential to understand the difference between a High-Level Design (HLD) and a Technical Specification (LLD). The HLD provides a wider look, outlining the primary building blocks and their interactions . It’s centered on the “what” and “why” – what the application

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