product · inferred from evidence
Grafana
A platform for monitoring and observability that generates unique SQL queries on refresh.
- QuestDB memory climbs forever when Grafana generates unique BETWEEN queries (statement cache never reused)
This is not a leak in your queries. Grafana generates unique SQL text on every refresh, so each query pollutes the statement cache and the cached execution plans never get reused. Make sure you are on a release that includes PRs 1722 and 17
- Grafana Prometheus data source: connection refused in Docker (loopback mixup)
The Prometheus UI works from your browser, but Grafana doesnt query from your browser: the Grafana server makes the request itself. The loopback address of one container is not the loopback address of another, even with published ports, so
- Grafana 10 upgrade: OAuth login fails with "user already exists"
This is the documented Grafana v10 breaking change: OAuth integrations no longer look users up by email, which is how your 9.x users were matched. Existing accounts cant be found by email anymore, so the signup path fails with "user already