I was researching rate limiting algorithms for a project when I came across a couple of articles talking about the Generic Cell Rate Algorithm (GCRA). The name “cell” comes from a communications technology called Asynchronous Transfer Mode (ATM) which encoded data into small packets of fixed size called “cells” – https:…
It's time to scale our hello-world job again, but this time we're going to do so with the help of a load balancer called Traefik. Traefik is an open-source edge router written in Go with first-party Consul integration.…
Re-deploying our job every time we want to change the name we're saying hello to seems a little heavy handed when we really just need to update our greet config file template and restart our greet task. So, how can we accomplish this without another deployment? Consul to the rescue!…
It's time to scale our greeter allocations. Thankfully Nomad's dynamic port allocation and Consul's templating are going to make this operation pretty painless.…
In our getting started post we got Nomad and Consul installed and reviewed each stanza of a Nomad job specification. In this workshop we're going to deploy a 'Hello World' style app, make some changes to it's configuration, and then re-deploy it.…
Why write another learning guide? The official Nomad learning guides provide excellent examples for deploying workloads with Docker but very few showcase orchestration of non-containerized workloads. As a result of this I actually found it a little tough to get some of my first jobs spun-up. When it came time…
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Story time 📖 A few weeks back I was tasked with writing config driven black box monitoring tool. The requirements included two different handlers each with their own settings and no overlap. Now, in Python I might reach for dispatch pattern where I select the class of handler based on the…