Caching

I assume that you remember the three main pillars of a mobile device that we discussed in the Three main pillars section of Chapter 1, Pillars of Mobile Web Performance Optimization. Without a doubt, every developer should consider these three factors when they build a mobile website or application. Whether your site is for a small coffee shop or a larger online shop, you just cannot ignore these three factors, and this is why caching is important. It is an excellent way to download websites faster, saving some parts of them in your browser and then when you visit that site again you don't have to download or calculate that section again. Using the cache, the developer can improve speed, energy consumption, and user experience of his application or website.

Cache-Control

When we cache a file, it is available to reuse straightaway, which makes our application or website appear fast in performance. Also, enabling caching and using cache-control directives correctly, we can reduce...