Many developers come across confusion when talking about HLD and LLD. Essentially, a Top-Level Design provides a general perspective of the solution, outlining its major parts and their interactions - it’s like a diagram . Conversely, a Low-Level Design dives deep into the specifics. It details *
When creating applications, there's vital to appreciate the distinct roles of top-level design and low-level design . HLD provides a broader view of the application , outlining the core components and their connections without detailed execution specifics. In contrast , Detailed design goes into
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