Caching on the Front-End: Service Workers Explained
Caching means storing copies of files so they do not have to be downloaded again every visit. A service worker is a small script that runs in the background of the browser and gives fine control over this — it can even let parts of a site work offline.
Used well, this makes return visits noticeably faster and the site more resilient on patchy connections.
What Service Workers Enable
- Faster repeat visits by serving stored files instantly.
- Basic offline access to previously viewed content.
- Reduced load on your server and lower bandwidth use.
- The foundation for installable Progressive Web Apps.
Handled With Care
Caching must be managed so visitors still receive fresh content when you update the site. We set clear rules so people get speed without ever being stuck on an old version of a page.
Frequently Asked Questions
Will caching stop visitors seeing my updates?
Not when configured properly. We control how long files are cached and force refreshes when you publish important changes.
If you need a hand with any of this, your Progressive Robot delivery team is ready to help. Raise a ticket from the Support area of your client portal or speak to your account manager and we will guide you through the next steps.