Req is an HTTP client for Elixir designed with the “batteries-included” approach. It does a lot of things out of the box. It automatically decompresses & decodes responses, follows redirects, retries on errors, etc. Req also has “replaceable batteries.” Virtually all of its features are implemented as distinct functions which developers can easily reuse, re-arrange, or write new ones. In this talk, you’ll see Req in action, learn more about its features and internals, and how you can extend it yourself.