Web performance is a requirement and a need for any successful business project. Websites and web applications must be delivered quickly and on time.
There are different types of web caching, including browser caching, which stores resources on a user's device, and server caching, which stores resources on the server. Caching can be controlled using HTTP headers, which can specify how long a resource should be cached and whether or not it can be cached at all.
There are several ways to improve web performance, including:
Minimizing HTTP requests: Reducing the number of requests that a web page makes can significantly decrease load times. This can be done by using CSS sprites, which combine multiple images into a single file, and by using a content delivery network (CDN) to host static files.
Optimizing images: Large images can take a long time to load, so it's important to optimize them by compressing them and reducing their file size.
Using browser caching: By setting the right caching headers, web developers can tell the browser to store certain resources locally, so they don't have to be downloaded again the next time a user visits the website.
Using a Content Delivery Network (CDN): A CDN is a network of servers that are distributed around the world. These servers will cache a copy of the website content and deliver it to users from the server that is closest to them.
Gzip compression: Gzip is a method of compressing files to make them smaller and faster to transfer over the internet.
Use of a performance measurement tool: To identify and measure the bottlenecks in website performance, tools like Google Analytics, Lighthouse, GTmetrix, webpagetest can be used.
These are just a few examples, but there are many other techniques that can be used to improve web performance. The specific steps you should take will depend on the nature of your website and the technologies that you are using.