The counters are in production since few monthes now and no issues were detected.
The old counters stack can be decommissioned.
After a discussion, we (sysadms) have decided to keep the counter computation in database and the export to prometheus to have a idea of the drift of the hyperloglogs counters.
However, some tasks are still needed:
- Reduce the refresh of the database counter to once a week or month to reduce the pressure on the database
- Cleanup the puppet code relative the plumbing around `stats.softwareheritage.org` (script, crons, historical data)
- Cleanup apache the configuration to remove the unused `stats.softwarehritage.org` vhost
- Remove the files on pergamon