EventStoreDB gRPC Sink

When replicating events to Event Store Cloud, we recommend using the EventStoreDB gRPC sink.

You need to specify two configurations options for it:

• replicator.sink.protocol - set to grpc
• replicator.sink.connectionString - use the target cluster connection string, which you’d use for the gRPC client.

For example, for an Event Store Cloud cluster the connection string would look like:

esdb+discover://<username>:<password>@<cluster_id>.mesdb.eventstore.cloud.

Using gRPC gives you more predictable write operation time. For example, on a C4-size instance in Google Cloud Platform, one write would take 4-5 ms, and this number allows you to calculate the replication process throughput, as it doesn’t change much when the database size grows.