Testing

Content Objective

In this chapter, you'll discover:

• How a request flows from the browser all the way to AEM Publish

• Why Dispatcher is critical to your architecture and performance

• How caching improves performance and what cache hits vs misses mean

• The mechanics of content invalidation after publishing

• Real production issues hidden in the request pipeline and how to troubleshoot them

When we first start working with AEM, page rendering feels almost magical. A user opens a URL in the browser, and somehow AEM returns a fully rendered page.

Most developers learn how to create components, dialogs, Sling Models, and HTL templates very early in their AEM journey. However, very few spend time understanding what happens before any of those things even come into the picture.