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I spent a good chunk of an afternoon wrestling with TLS certificates and Docker networking to get a secure, multi-node CockroachDB cluster running on my local machine. I’m writing this down mostly so I don’t have to figure it out all over again, and hopefully, it saves you some time too. The main takeaway? It’s totally doable, and it’s a great way to experiment with a distributed SQL setup. Also, you will almost certainly mess up a SAN (Subject Alternative Name) in a certificate at least once....

I’ve always found that the best way to understand a technology is to build something with it. This post is my attempt to distill the process of creating a simple gRPC service in Go into a straightforward, no-frills guide. We’ll build a basic Calculator service that can multiply two numbers—a “hello world” for RPC. The “Why” I wanted a clear, practical example to refer back to. Something that cuts through the noise and focuses on the core steps: defining the service, generating the code, and getting a client and server to talk to each other....

Protocol Buffers (or Protobuf) are one of those technologies that I’ve come to appreciate more and more over time. At first glance, they can seem a bit more complex than good old JSON, but once you get the hang of them, they offer a powerful way to structure and serialize data. This post is a quick, hands-on guide to getting started with Protobuf in Go, based on my own experience....