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| -rw-r--r-- | toolkit/components/telemetry/docs/concepts/archiving.rst | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/toolkit/components/telemetry/docs/concepts/archiving.rst b/toolkit/components/telemetry/docs/concepts/archiving.rst new file mode 100644 index 0000000000..0466f13769 --- /dev/null +++ b/toolkit/components/telemetry/docs/concepts/archiving.rst @@ -0,0 +1,23 @@ +========= +Archiving +========= + +When archiving is enabled through the relevant pref (``toolkit.telemetry.archive.enabled``), pings submitted to ``TelemetryController`` are also stored locally in the user profile directory, in ``<profile-dir>/datareporting/archived``. + +To allow for cheaper lookup of archived pings, storage follows a specific naming scheme for both the directory and the ping file name: `<YYYY-MM>/<timestamp>.<UUID>.<type>.jsonlz4`. + +* ``<YYYY-MM>`` - The subdirectory name, generated from the ping creation date. +* ``<timestamp>`` - Timestamp of the ping creation date. +* ``<UUID>`` - The ping identifier. +* ``<type>`` - The ping type. + +Archived data can be viewed on ``about:telemetry``. + +Cleanup +------- + +Archived pings are not kept around forever. +After startup of Firefox and initialization of Telemetry, the archive is cleaned up if necessary. + +* Old ping data is removed by month if it is older than 60 days. +* If the total size of the archive exceeds the quota of 120 MB, pings are removed to reduce the size of the archive again. |