Caching
Caching refers to the temporary storage of data so that recurring requests do not have to be fully reprocessed each time. This shortens Ladezeiten , conserves server resources, and significantly improves perceived performance. For businesses, effective caching means measurably better PageSpeed scores and thus greater visibility in search engines.
Why is caching important?
Without caching, every request must be fully recomputed or loaded from the database. This increases server load and extends load times. Properly implemented caching improves metrics like PageSpeed , shortens load times, and stabilizes the Rendering of complex applications.
Types of caching
Caching can operate at multiple levels: browser caching stores static assets locally on the end device. Server caching reduces database queries. CDN mechanisms distribute content geographically. Additionally, application caching within a Framework architecture can be used to avoid repetitive computations.
Relationship with Core Web Vitals
Effective caching directly impacts metrics like Largest Contentful Paint , First Contentful Paint , and Cumulative Layout Shift . Quickly available content reduces wait times and improves the perceived stability of a page.
Common implementation mistakes
Caching is often either not configured at all or incorrectly invalidated. Excessively long cache durations can serve stale content, while missing headers can prevent browser caching entirely. Especially with dynamic content or APIs, caching is frequently neglected. A well-defined Build-Prozess and continuous Monitoring help detect misconfigurations early.
How we use it
Our Angular SSG architecture leverages caching at three levels: statically pre-rendered HTML pages eliminate server-side computation entirely, Apache headers control browser caching for assets with content hashing, and CDN edge nodes deliver images and fonts from the nearest location. In a client project in Bergisches Land, correct Cache-Control configuration alone reduced LCP by 800 ms. Combined with Static Site Generation , we achieve consistent load times without any server-side overhead.