[toredash]

Managed a fairly large matomo site in the past. Using queue plugin (https://plugins.matomo.org/QueuedTracking) with Redis Cluster really improves the situation. We actually built a custom plugin with Nginx + Lua to avoid PHP altogether for the tracking part. Scaling ingestion then wasn't the problem, draining the queue was

[emj]

The tracking was not the issue the problem was report generation with segments. Every segment makes you regenerate all the reports. Tracking part is a problem because you need to split the tracking and report part of you want to have something robust.