Add FastAPI + Redis example docs

docs/examples/fastapi-redis.rst

@@ -0,0 +1,86 @@
+.. _fastapi-redis-example:
+
+FastAPI + Redis example
+=======================
+
+.. meta::
+   :keywords: Python,Dependency Injection,FastAPI,Redis,Example
+   :description: This example demonstrates a usage of the FastAPI, Redis, and Dependency Injector.
+
+This example shows how to use ``Dependency Injector`` with `FastAPI <https://fastapi.tiangolo.com/>`_ and
+`Redis <https://redis.io/>`_.
+
+The source code is available on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/fastapi-redis>`_.
+
+Application structure
+---------------------
+
+Application has next structure:
+
+.. code-block:: bash
+
+   ./
+   ├── fastapiredis/
+   │   ├── __init__.py
+   │   ├── application.py
+   │   ├── containers.py
+   │   ├── redis.py
+   │   ├── services.py
+   │   └── tests.py
+   ├── docker-compose.yml
+   ├── Dockerfile
+   └── requirements.txt
+
+Redis
+-----
+
+Module ``redis`` defines Redis connection pool initialization and shutdown. See ``fastapiredis/redis.py``:
+
+.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/redis.py
+   :language: python
+
+Service
+-------
+
+Module ``services`` contains example service. Service has a dependency on Redis connection pool.
+It uses it for getting and setting a key asynchronously. Real life service will do something more meaningful.
+See ``fastapiredis/services.py``:
+
+.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/services.py
+   :language: python
+
+Container
+---------
+
+Declarative container wires example service with Redis connection pool. See ``fastapiredis/containers.py``:
+
+.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/containers.py
+   :language: python
+
+Application
+-----------
+
+Module ``application`` creates ``FastAPI`` app, setup endpoint, and init container.
+
+Endpoint ``index`` has a dependency on example service. The dependency is injected using :ref:`wiring` feature.
+
+Listing of ``fastapiredis/application.py``:
+
+.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/application.py
+   :language: python
+
+Tests
+-----
+
+Tests use :ref:`provider-overriding` feature to replace example service with a mock. See ``fastapiredis/tests.py``:
+
+.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/tests.py
+   :language: python
+   :emphasize-lines: 24
+
+Sources
+-------
+
+The source code is available on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/fastapi-redis>`_.
+
+.. disqus::

docs/examples/index.rst

@@ -19,5 +19,6 @@ Explore the examples to see the ``Dependency Injector`` in action.
     aiohttp
     sanic
     fastapi
+    fastapi-redis
 
 .. disqus::