.. _storages:


FindFace Multi Data Storages
========================================

.. rubric:: In this section:

.. contents::
   :local:

List of Storages
-------------------------------

FindFace Multi uses the following data storages:

* Tarantool-based feature vector database that stores object feature vectors and events.
* PostgreSQL-based main system database ``ffsecurity`` that stores internal system data, cards, user accounts, and camera settings. 
* The ``/var/lib/findface-security/uploads`` directory that stores uploaded card photos, video files, full frames of events and counters, and object thumbnails.
* The ``/var/lib/ffupload/`` directory that stores such event artifacts as normalized object images. 

  .. note:: 
     It also stores video chunks if you are using :ref:`Video Recorder <architecture>`. 

* (Only with Video Recorder) MongoDB-based database that stores meta-information of the video chunks, including their exact location in the storage, ``/var/lib/ffupload/``.


Feature Vector Database Galleries
------------------------------------

There are the following galleries in the Tarantool-based feature vector database:

* ``ffsec_body_events``: feature vectors extracted from bodies detected in the video.
* ``ffsec_body_objects``: feature vectors extracted from body images uploaded to the card index.
* ``ffsec_body_clusters``: centroids of body clusters.
* ``ffsec_car_events``: feature vectors extracted from cars detected in the video.
* ``ffsec_car_objects``: feature vectors extracted from car images uploaded to the card index.
* ``ffsec_car_clusters``: centroids of car clusters.
* ``ffsec_face_events``: feature vectors extracted from faces detected in the video.
* ``ffsec_face_objects``: feature vectors extracted from face images uploaded to the card index.
* ``ffsec_face_clusters``: centroids of face clusters.
* ``ffsec_user_face``: feature vectors extracted from the FindFace Multi users' photos for face-based authentication.