At $dayjob we're considering replacing DataDog with Grafana and friends, already using it elsewhere to great affect.
Haven't used influxdb yet so can't speak as a comparison but from my usage, I'm sold on Grafana, Loki, Prometheus, and friends over DataDog. It mixed with OTel have been a real pleasure to use.
We’ve done that migration at $dayjob. Has taken a lot of getting used to. The data model is different (perhaps poor setting choices) causing some wacky query requirements for our charts which devs often don’t understand to misleading charts. We’re slowly switching to OTEL which should solve that problem. Otherwise there’s also much to be desired in how our grafana behaves interims of saving preferences (ours doesn’t; stateless head? I forget why) which is annoying. Also the tracing/APM is missing out of the box though some teams are working on getting that going too.
So a classic build vs buy story I guess. Probably will pay less in the long run but for a worse and rocky road experience so far.
Haven't used influxdb yet so can't speak as a comparison but from my usage, I'm sold on Grafana, Loki, Prometheus, and friends over DataDog. It mixed with OTel have been a real pleasure to use.