URL Parameter
A URL parameter (also known as a query string) is the part of a URL that follows a question mark (?), used to pass data to the server (e.g., ?utm_source=google). Parameters used for tracking, sessions, or analytics can be problematic for caching, as they create many unique URLs that all point to the same content, reducing the cache-hit ratio. Speed Kit can be configured to ignore specific, non-essential parameters, allowing it to treat these different URLs as a single cacheable item.
Related web performance terms
- User Experience (UX)
User Experience (UX) is the overall perception and feeling a person has when interacting with a product, system, or service, such as a website.
- User Timing
User Timing is a browser API that allows developers to create custom, application-specific timestamps in their code to measure the performance of certain operations.
- A/B Testing
A/B testing is a method of comparing two versions of a webpage to see which one performs better. For example, an e-commerce store might show 50% of its visitors a green "Buy Now" button (Version A)…
- AVIF
AVIF (AV1 Image File Format) is a modern, next-generation image format that provides significantly better compression than older formats like JPEG and WebP.