### The main app file { #the-main-app-file }

Now we create a dependency that returns a new `config.Settings()`.

{* ../../docs_src/settings/app02_an_py39/main.py hl[6,12:13] *}

/// tip

We'll discuss the `@lru_cache` in a bit.

For now you can assume `get_settings()` is a normal function.

///

And then we can require it from the *path operation function* as a dependency and use it anywhere we need it.

  //
  // A consequence of these requirements is that the delegate futures cannot be stored in
  // final fields.
  //
  // For simplicity the rest of this description will discuss Futures.catching since it is the
  // simplest instance, though very similar descriptions apply to many other classes in this file.
  //
  // In the constructor of AbstractCatchingFuture, the delegate future is assigned to a field

#                                                      Forum
#                                                     ------

# Forum link for user support.
forum.link=https://discuss.codelibs.org/c/Fess{lang}/
# Supported languages for the forum.
forum.supported.langs=en,ja

# ----------------------------------------------------------
#                                                    Suggest

    /** The key of the configuration. e.g. ja */
    String ONLINE_HELP_SUPPORTED_LANGS = "online.help.supported.langs";

    /** The key of the configuration. e.g. https://discuss.codelibs.org/c/Fess{lang}/ */
    String FORUM_LINK = "forum.link";

    /** The key of the configuration. e.g. en,ja */
    String FORUM_SUPPORTED_LANGS = "forum.supported.langs";

* reverts an aws-ebs volume provisioner optimization as we need to further discuss a viable optimization ([#78200](https://github.com/kubernetes/kubernetes/pull/78200), [@zhan849](https://github.com/zhan849))

    * Discussion for these changes can be found on SIG Build's [TensorFlow Community Forum thread](https://discuss.tensorflow.org/t/tensorflow-linux-wheels-are-being-upgraded-to-manylinux2014/8339)