Providing a great web API means being a well-behaved citizen of the web, and hence, to play nicely with all the other citizens out there: Browsers, caches, proxies, crawlers and so on.

Unfortunately, the Play Framework, like many other web frameworks, does not offer a lot of help in implementing such a well-behaved web API. However, it turns out to be quite flexible and modular, so we can easily extend it or replace parts of it that stand in our way.

In this talk, you will learn about principles for designing well-behaved web APIs and how to implement them with Play. Daniel will discuss where Play gets in the way, show how we can overcome those obstacles and introduce a few libraries to ease the development of REST APIs with Play.