Performance

Adding an index per column is not an indexing strategy. Column order in composite indexes determines whether they get used…

The rendering strategy debate is really about trade-offs, and the right choice depends on what the page needs — client-side…

A large app is more than a storage inconvenience — it is a barrier to download and install, and app…

Caching improves performance by serving stale data, and the trade-off between freshness and speed should be a deliberate decision, not…

Adding a cache is straightforward; the hard part is deciding when cached data is stale and removing it, and most…

Most memoization in React codebases costs more than it saves. Understanding when re-renders are actually expensive is what separates real…