Summary

All that knowledge might be overwhelming right now, but do not worry, you do not need to remember all the names of the objects presented to understand how gRPC works. The point of this chapter is more about giving you a sense of the different actors involved in the process of making a connection and sending/receiving data.

We saw that we have four RPC operations that can be performed by the client and/or the server. Each actor sends a header to indicate it is its turn to send data, then they send messages, and finally, each of them has a special operation to indicate that it is done with sending messages.

After that, we saw how gRPC creates a connection between the server and the client. This is done with the help of the resolver, which finds IP addresses depending on the address we try to connect to, and with the load balancer, which helps gRPC work out which subchannels to send the data to.

Then, we talked about channels and subchannels. We saw how they are created...