Each time a person visits your site, you will have a few seconds to catch their attention and keep him/her engaged in what your website offers. If your website loads very fast, you are safe. But if its performance is on the low side, you are risking alienating a large portion of the website traffic the website receives. Your website will shuttle a lot of information between different computers to deliver the content to users. A better way of quickening the content retrieval time and increase the overall speed and performance of your website and minimize the traffic flowing is the caching concept.
So, what is caching?
To understand what is caching, you should first understand what happens when someone clicks on your website link. Each time someone uses your website address to get to your site, his/her browser will use specialized PHP code to contact the website host. The website host will then access the primary database where you have stored your website content. The database will then take the request, compile it into an HTML page that someone can read and shoot it to your website, where the visitor can see it actively.
The main problem with the process is that it will take the visitor a very long time to request for information from the database, and as a result, your website will load slowly. That is where caching should come into play. Caching is a form of temporary storage of data from your website that the user accesses to allow faster and easier retrieval. With caching, your website will not have to conduct the rounds through the internet to retrieve the information.
How caching increases website speed
Caching helps increase the website loading speed in several ways. It creates static HTML files and saves them for later use. That way, it can lower the bandwidth, the server’s load and helps the website avoid delays by delivering information to the website browsers of visitors very fast. The caching may be configured in the server through a caching plugin. The pages will exist in parts in your primary database for later usage. Each time a person visits your website, the site has to retrieve the parts from MySQL for compilation so that the visitor can access the information in a readable form.
When configuring the caching plugin, you will have the option of setting the expiration date. The date will tell the cache storage that the file will remain unchanged for the time you have set – whether it is one week, one month or one year. For example, you can set the website header as an unchanging image so that each time it will load in lightning speed. And because you will have set the expiration date, you will not have to re-cache the website again.