Autoconexión con nombre y clientes HTTP con alcance

Hey @wh!

SUCH a good question. As you know, the purpose of any of this config is to help "configure and add services to the container". The short answer to your question is that the bundle that provides the http client service is FrameworkBundle. By using framework, we are passing this config to FrameworkBundle. The same is true for cache config: it also lives under framework because FrameworkBundle provides the cache services.

In other situations, other bundles provide other services. For example, when we want to configure something about Twig (e.g. add a global variable or add a form theme), we do that under the twig key because TwigBundle provides the Twig services.

But, how could a user possibly know which services come from which bundles? Fair question! FrameworkBundle is huge, and it provides MANY of core services you use, which is why so many pieces of config live under framework. And, there's no huge, scientific reason why, for example, "twig services" were put into a separate TwigBundle bug "http client" services were put into the core FrameworkBundle. The real answer to your question about config is: read the docs -e.g. search for "how do I use Symfony's HTTP Client" and you'll find docs with the configuration. Because, even if you knew that the HTTP client services came from FrameworkBundle, the correct config still can't be guessed: it's definitely one spot where you should lean on the docs.

But, hopefully this answer gives you some insight into why framework in this case but other root keys for other services.

Cheers!