TL;DR: Running Datadog (dd-agent) during local development can help confirm metrics and traces are sent as expected and can help debug when things go wrong. To run dd-agent locally just clone the dhermes/local-dd-agent¹ repository and make run.

Being able to quickly iterate with a local dd-agent helped …

Adopting a service mesh like Istio is a huge undertaking. (Let's set aside for this discussion whether it's a good idea to undertake.) A fairly common issue when getting a mesh up and running is misconfiguration. When trying to debug and determine where and how things are misconfigured, the network …

I've been writing a library for running PostgreSQL migrations in Go. One of the primary pieces of advice I keep coming across is

Beware of lock queues, use lock timeouts

In other words, each migration stage should happen instantaneously (or almost instantaneously). For real-time applications, if a migration runs "for …

Looking Inside a Slice

The first thing to realize is that a slice in Go is really just a struct that wraps "header" information about (1) a pointer to the "real" underlying data, (2) the length and (3) the capacity without directly exposing those fields. We can use a struct …

I recently¹ had the privilege of co-authoring a blog post on the Blend engineering blog with my esteemed colleague Austin Poore. Our engineering organization is growing like crazy right now and it's a lot of fun so if any of this post is interesting to you, check out our …