Lesser-known WordPress features

Throughout this book, we have looked at the major components related to web application development. WordPress also offers some additional features that are rarely noticed among the developer community. Let's get a brief introduction to the following lesser-known features of WordPress:

• Caching
• Transients
• Testing
• Security
• Performance

Caching

In complex web applications, performance becomes a critical task. There are various ways of improving the performance from the application level as well as the database level. Caching is one of the major features of the performance-improving process, where you keep the result of complex logic or larger files in the memory or database for quick retrievals. WordPress offers a set of functions...