Distributed Services with Go

Request Discovered Services and Replicate Logs

Let’s build on our service discovery to add replication in our service so that we store multiple copies of the log data when we have multiple servers in a cluster. Replication makes our service more resilient to failures. For example, if a node’s disk fails and we can’t recover its data, replication can save our butts because it ensures that there’s a copy saved on another disk.

In the next chapter, we’ll coordinate the servers so our replication will have a defined leader-follower relationship, but for now we simply want the servers to replicate each other when they discover each other and not worry about whether they should, like the scientists from Jurassic Park. Our goal for the rest of this ...