The Relayer component is responsible for providing executed block data to other Firehose components.
The Relayer component feeds from all available Reader nodes to get a comprehensive view of all possible forks.
The Relayer "fans out", or relays, block information to the other Firehose components.
Relayer & gRPC
The Relayer component serves its block data through the streaming gRPC interface BlockStream::Blocks. This is the same interface that the Reader component exposes to the Relayer component. Read more about the BlockStream::Blocks interface in its GitHub repository.
