Update installation.rst.

Add memcached as optional-dependency.

Found a typo in CONTRIBUTING.rst

CONTRIBUTING.rst

@@ -8,15 +8,15 @@ Navigate to the project directory and run the following commands:
 Create and activate a virtual environment
 
 .. code-block:: bash
-    
+
     $ python -m venv .venv
     $ source .venv/bin/activate
 
 Install dependencies
 
 .. code-block:: bash
 
-    $ pip install -r requirements/dev.in
+    $ pip install -r requirements/dev.txt
     $ pip install -r requirements/docs.in
 
 Install the package in editable mode
@@ -47,11 +47,11 @@ or
 Run the tests together or individually
 
 .. code-block:: bash
-    
+
     $ pytest tests
     $ pytest tests/test_basic.py
 
-For easier startup and teardown of storage for testing you may use 
+For easier startup and teardown of storage for testing you may use
 
 .. code-block:: bash
 
@@ -62,18 +62,18 @@ Using rye
 ~~~~~~~~~~~
 
 .. code-block:: bash
-    
+
     $ rye pin 3.11
     $ rye sync
 
 
 .. code-block:: bash
-    
+
     $ rye run python examples/hello.py
 
 
 etc.
 
 Pull requests
 --------------
-Please check previous pull requests before submitting a new one.
+Please check previous pull requests before submitting a new one.

docs/installation.rst

@@ -8,13 +8,13 @@ Install from PyPI using an installer such as pip:
 
     $ pip install Flask-Session
 
-Flask-Session's only required dependency is msgspec for serialization, which has no sub-dependencies. 
+Flask-Session's only required dependency is msgspec for serialization, which has no sub-dependencies.
 
-However, you also need to choose a storage type and install an appropriate client library so the app can communicate with storage. For example, if you want to use Redis as your storage, you will need to install the redis-py client library:
+However, you also need to choose a storage type and install an appropriate client library so the app can communicate with storage. For example, if you want to use Redis as your storage, you will need to install the redis optional dependency:
 
 .. code-block:: bash
 
-    $ pip install redis
+    $ pip install Flask-Session[redis]
 
 Redis is the recommended storage type for Flask-Session, as it has the most complete support for the features of Flask-Session with minimal configuration.
 
@@ -23,10 +23,46 @@ Redis is the recommended storage type for Flask-Session, as it has the most comp
   Flask-Session versions below 1.0.0 (not yet released), use pickle_ as the default serializer, which may have security implications in production if your storage is ever compromised.
 
 
-Direct support
----------------
+Enhanced Installation Options
+-----------------------------
 
-Flask-Session has an increasing number of directly supported storage and client libraries.
+Flask-Session now supports a variety of storage backends directly through optional dependencies. This simplifies the installation process, allowing you to specify the required storage backend at the time of Flask-Session installation itself.
+
+Below is a guide on how to install Flask-Session with support for the desired storage backend:
+
+Available Storage Options
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+To install Flask-Session with support for a specific storage backend, use the following command, replacing ``<storage-option>`` with your chosen backend from the list below:
+
+.. code-block:: bash
+
+    pip install Flask-Session[<storage-option>]
+
+Available storage options and their corresponding ``<storage-option>`` values are:
+
+- **Redis**: ``redis``
+- **Memcached**: ``memcached``
+- **MongoDB**: ``mongodb``
+- **SQLAlchemy**: ``sqlalchemy``
+- **FileSystem**: ``filesystem``
+- **CacheLib**: ``cachelib``
+
+For Developers and Contributors
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+If you're developing with Flask-Session or contributing to its codebase, you might want to install all supported backends along with additional development tools. You can do so by specifying the ``dev`` option:
+
+.. code-block:: bash
+
+    pip install Flask-Session[dev]
+
+This will install Flask-Session along with all the optional dependencies listed under the ``dev`` category in ``pyproject.toml``, facilitating a comprehensive development setup.
+
+Direct Support
+--------------
+
+Flask-Session provides built-in support for a number of storage backends through the use of client libraries. Below is a list of supported storage options along with their respective client libraries:
 
 .. list-table::
    :header-rows: 1
@@ -35,15 +71,15 @@ Flask-Session has an increasing number of directly supported storage and client
    * - Storage
      - Client Library
    * - Redis
-     - redis-py_
+     - ``redis`` (via ``redis-py``)
    * - Memcached
-     - pylibmc_, python-memcached_, libmc_ or pymemcache_
+     - ``pymemcache``
    * - MongoDB
-     - pymongo_
+     - ``pymongo``
    * - SQL Alchemy
-     - flask-sqlalchemy_
+     - ``flask-sqlalchemy``
 
-Other libraries may work if they use the same commands as the ones listed above.
+Other storage backends might be compatible with Flask-Session as long as they adhere to the command interfaces used by the libraries listed above.
 
 Cachelib
 --------
@@ -70,7 +106,7 @@ Flask-Session also indirectly supports storage and client libraries via cachelib
      - pymongo_
    * - DynamoDB
      - boto3_
-  
+
 
 .. warning::
 
@@ -88,4 +124,4 @@ Flask-Session also indirectly supports storage and client libraries via cachelib
 .. _boto3: https://boto3.amazonaws.com/v1/documentation/api/latest/index.html
 .. _libmc: https://github.com/douban/libmc
 .. _uwsgi: https://uwsgi-docs.readthedocs.io/en/latest/WSGIquickstart.html
-.. _pickle: https://docs.python.org/3/library/pickle.html
+.. _pickle: https://docs.python.org/3/library/pickle.html

pyproject.toml

@@ -28,10 +28,11 @@ dynamic = ["version"]
 [project.optional-dependencies]
 cachelib = ["cachelib>=0.10.2"]
 filesystem = ["cachelib>=0.10.2"]
+memcached = ["pymemcache"]
 mongodb = ["pymongo>=4.6.2"]
 redis = ["redis>=5.0.3"]
 sqlalchemy = ["flask-sqlalchemy>=3.0.5"]
-dev = ["Flask-Session[cachelib, filesystem,  mongodb, redis, sqlalchemy]"]
+dev = ["Flask-Session[cachelib, filesystem, memcached, mongodb, redis, sqlalchemy]"]
 
 [project.urls]
 Documentation = "https://flask-session.readthedocs.io"