Implement a caching strategy that minimises the amount and distance of data transfer.
Easy to implement
13 High impact score
Use a local CDN, choose static site delivery where possible, and favour event-driven architecture over constantly-polling or always-on processes. Distributing assets from a CDN close to the visitor cuts both the distance data has to travel and the load on your origin server.
Check that your hosting-level caching and your application/website-level caching aren’t conflicting with each other; two caching layers working against one another can end up serving stale content or, worse, re-fetching and re-processing more than either layer alone would.