.. _architecture:

PyAMS application architecture
==============================

PyAMS applications are built on a small set of prerequisites and external components which *can* or, for some of them,
*must* be included, the minimal configuration is:

* a mandatory shared ZODB;  :ref:`zodb` chapter

* a Redis or Memcached server, to handle cache and sessions;
  :ref:`pyams_cache` chapter


Single server deployment
------------------------

Overview of the environment system after the :ref:`quickstart` installation.
It's a very lite configuration, with only mandatory resources.
Obviously you can extend this system by connecting more resources like is described in the :ref:`config` chapiter


.. image:: ../_static/architecture_quickstart.png



Development deployment
------------------------

In additon of mandatory resource **PyAMS** could work with:

* a websockets server (GuniCorn), used to handle desktop notifications;
  you can find information about this component in the :ref:`pyams_notify` chapter;

* an Elasticsearch index, used to handle quick and optimized searching.


.. image:: ../_static/architecture_dev.png


Advanced deployment
-------------------

Use case in an advanced environment.

.. image:: ../_static/architecture_prod.png