Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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
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+=========
+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.