Performance monitoring

[juliusknorr]

Feature Request

Besides error tracking, Sentry also offers performance monitoring capabilities https://docs.sentry.io/product/performance/

Summary

It would probably be interesting to see this can also be used to trace performance metrics of certain operations like db transactions, controller execution or app bootstrap for example. It would also be available for the frontend where it could even gather web vitals metrics.

https://docs.sentry.io/platforms/php/performance/
https://docs.sentry.io/platforms/javascript/performance/
https://docs.sentry.io/product/performance/web-vitals/

We might be able to use or extend the already existing OCP\Diagnostics\IEventLogger for that in the server https://github.com/nextcloud/server/blob/215aef3cbdc1963be1bb6bca5218ee0a4b7f1665/lib/public/Diagnostics/IEventLogger.php#L31

[ChristophWurst]

With nextcloud/server#36310 we should be able to register a middleware that runs around every request and monitors controller methods as transactions 🍿

[ChristophWurst]

Tada

[skjnldsv]

Yesss!!!
Can't wait to see where we lose so much perfs!