Why is this so hard? To send gRPC messages in Rust, one uses the tonic library. If you’re sending to an https endpoint, you’ll need to provide a ClientTlsConfig. By default, you’ll get a very distrustful one. Here’s the error message: the grpc server returns error (The service is currently unavailable): , detailed error message: …
Read moreMake https work on gRPC in Rust: load a root certificate into the TLS config
There once was a little app, proudly running in a container. The container let the app have its favorite operating system and libraries, all snug and separate. The little app shared a container runtime with its friend, a firefly. Sometimes the app’s code would crash (through no fault of the code, of course; must have …
Today I wanted a form with a label on the left, a button on the right, and an input in the middle, with the input getting all the space. Here is a spell: Then in HTML, the parent container is the flex box, and the immediate children are the three items. (They have to be …
Read moreCSS for giving the extra width to the thing in the middle
A viable system continues to function in a changing environment. We want our companies—and some teams—to be sustainable this way. How does your team contribute? Does your team have all the components of a viable system… and should it? Stafford Beer (1926-2002) coined the Viable Systems Model to describe what it takes. A Viable System …
TL;DR: Run the OpenTelemetry Collector helm chart with –values=values.yaml pointing to the values.yaml in this gist. Use kubectl get services to find the collector’s URL. The rest of this blog post walks through the whole process of setting this up. This will teach you the why and how of each step, so that you can adjust it to your needs. There’s also …
Read moreRun the OpenTelemetry Collector in Kubernetes for Front-End Tracing
One day a baby app was completed. It was so excited to run! But where would it run? and how? Its problems are only just beginning.
When I make a toy app for my own learning, I start small and add one feature at a time, each time figuring out some new piece about the framework or language I’m working in. There’s a point in adding features where they start to make each other harder. One time I made a Cat …
Are we succeeding as a software team?Well, if our job were feature delivery, we could look at the parade of JIRA tickets in our “complete” column. That is only part of our job, though.The purpose of a software team is to provide valued capabilities to customers, internal or external. To do that, our software has …
Read moreFive Measurements You Should Make and Then Ignore (Plus One to Watch Intently)
Can you see a pattern in these examples? SendGrid sends emails for you. You provide it with a webhook URL. It uses the webhook to “call you back” about what happens with those emails, like when they are dropped because your request was invalid. On AWS, you need to listen to an event bus if …
Read moreEvery SaaS Integration needs an Upstream Point of Contact
TL;DR: startSpan is easier and measures a duration. Use it if your work won’t create any subspans. startActiveSpan requires that you pass a callback for the work in the span, and then any spans created during that work will be children of this active span. I’m instrumenting a Node.js app with OpenTelemetry, and adding some …