What is cache busting and how does it impact web performance?

What is cache busting and how does it impact web performance?

Cache busting is a technique used to force browsers to load the latest version of a resource, like CSS or JavaScript files. It impacts web performance by ensuring users see the most up-to-date content, but it can also lead to increased load times if not managed properly.

Can you explain how cache busting works in detail?

Sure! Cache busting typically involves changing the URL of a resource whenever it is updated. This can be done by appending a query string or changing the file name. When the URL changes, the browser treats it as a new resource and fetches it from the server instead of using the cached version.

What are the pros and cons of using cache busting?

The pros include ensuring users always see the latest content and reducing issues with stale resources. The cons can be increased server load and longer load times for users if resources are frequently updated.

Are there best practices for implementing cache busting?

Yes, best practices include using versioning in file names, leveraging build tools to automate cache busting, and balancing the frequency of updates to minimize performance impacts.