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===============
Data collection
===============
There are different APIs and formats to collect data in Firefox, all suiting different use cases.
In general, we aim to submit data in a common format where possible. This has several advantages; from common code and tooling to sharing analysis know-how.
In cases where this isn't possible and more flexibility is needed, we can submit custom pings or consider adding different data formats to existing pings.
*Note:* Every new data collection must go through a `data collection review <https://wiki.mozilla.org/Firefox/Data_Collection>`_.
The current data collection possibilities include:
* :doc:`scalars` allow recording of a single value (string, boolean, a number)
* :doc:`histograms` can efficiently record multiple data points
* ``environment`` data records information about the system and settings a session occurs in
* ``TelemetryLog`` allows collecting ordered event entries (note: this does not have supporting analysis tools)
* :doc:`measuring elapsed time <measuring-time>`
* :doc:`custom pings <custom-pings>`
.. toctree::
:maxdepth: 2
:titlesonly:
:hidden:
:glob:
scalars
histograms
measuring-time
custom-pings
Browser Usage Telemetry
~~~~~~~~~~~~~~~~~~~~~~~
For more information, see :ref:`browserusagetelemetry`.
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