Some Questions

[cloudcompute]

Hi

a. Taken from the Pulsar's documentation: A cluster consists of 3 broker nodes, 3 bookie nodes, and 3 ZooKeeper nodes. We need 54 GB memory and so much of CPU, I think using Pulsar is quite expensive if we compare it with other systems like Nats.

b. Can we use Pulsar for Event Sourcing (that has features like Snapshots, Replay, etc.)? Does its underlying storage has the capability to store millions of events at a time without affecting the speed and performance of an application?

d. Are there any companies/applications who are using it as an Event Store in production? If yes, any feedback?

e. Can we export the metrics to Prometheus?

Thanks