There are countless benefits of data caching, the main benefit of caching is faster web pages. Faster web pages lead to better user experience, which translates into happier website visitors. For a company, this could mean more articles and ads viewed; customers view more products turning it into profits. Every time you visit a web page, you are using your web browser to request and assemble that page from the website’s server. The server holds all the files needed to assemble that web page, including the HTML doc (instructions to build the rest of the page), the images, text, styling, and more. On average, your browser makes upwards of 100 requests back and forth from the website’s server to build a complete webpage. Without any type of caching, whenever you visit that page you make those requests all over again; every other person visiting that web page is making the same requests. If there are lots of people accessing a page at one time, the server slows down and takes longer to deliver the web page to everyone.
There are many types of data caching like client-side caching, browser cache, server-side caching, database cache, object cache, opcode cache, page cache and content delivery network cache. Client-side caching is used for storing data files that could be useful to the user on their personal computer. Browser caching makes things easy and much faster for you because rather than requesting and transmitting the data required for that website to display on your browser, it is instead stored on your computer. With server-side caching, data is cached on the server; clients can then access the information more quickly, again improving the user experience. Database caching provides a variety of advantages for web developers. The most important factors are that it reduces disk access, reduces CPU utilization, and speed up the time it takes to access data. Object data can be stored locally so that it doesn’t have to be constantly retrieved for additional requests. As such, it increases the speed and performance of a web application. Opcode cache keeps a copy of the PHP opcode in server memory for when they could be needed later. Doing this, it is possible to increase PHP performance by 3 times. Page cache is similar to the other caches with the benefits being faster page load speed for a better user experience. The page cache stores full web pages to be served at a later time to the visitor. And with CDN caching, static website content is added to proxy servers that are globally distributed. This allows your visitors from all over the world to download your site content faster thus speeding up your site load time. So, now you know the benefits of data caching and the different types to it.