Just to add, VictoriaMetrics covers all 3 signals:

- VictoriaMetrics for metrics. With Prometheus API support, so it integrates with Grafana using Prometheus datasource. It has its own Grafana datasource with extra functionality too.

- VictoriaLogs for logs. Integrates natively with Grafana using VictoriaLogs datasource.

- VictoriaTraces for traces. With Jaeger API support, so it intergrates with Grafana using Jaeger datasource.

All 3 solutions support alerting, managed by same team, are Apache2 licensed, are focused on resource efficiency and simiplicity.