Git is a tool that software engineers have to use every day, so it is important to be happy and not waste too much time when using it.

I know there are plenty of UI tools on the market to help you with your Git experience, but after years of trying them, I’ve never had an experience as good as working with the command line.

Why? Because I’ve spent some time configuring my Git command line. In this article, I will present some tools/configs/aliases I use to make my life easier.

Aliases

Git commands are long and often super complex, so…

This is an endless discussion when creating a new team or product; should I prioritise stability and availability over release frequency? In more technical terms, are you a mean time to recovery Team (MTTR) or a mean time between failure team (MTBF)?

MTBF and MTTR are metrics that together determine the availability of your system, so they have a direct impact on how your team is organised.

This blog post is in favour of MTTR because it reduces the lead time (the time between the initiation and completion) of a feature; this is what we experienced in Adevinta.

MTTR is…

If you read my previous posts you can see that I am working with Golang and AWS a lot, so in this one, I will present how I deploy a serverless API in AWS Lambda with an API Gateway to access it.

I will write the API using GO and go-chi/chi to handle the http routing layer.

TL;DR

All the sources are available in thomaspoignant/cdk-golang-lambda-deployment repository

Create a serverless API in GO

So the first things we will do is creating an API using go-chi and the aws-lambda-go SDK, so we need to import these dependencies:

go get github.com/aws/aws-lambda-go
go get github.com/awslabs/aws-lambda-go-api-proxygo get github.com/go-chi/chi go get…

Since I started using AWS CDK, I’ve been trying to use it for everything related to infrastructure. But I wanted to go a bit further and also manage my monitoring with it.

To achieve this, I am extending CloudFormation with the help of custom resources.

“Custom resources enable you to write custom provisioning logic in templates that AWS CloudFormation runs anytime you create, update (if you changed the custom resource), or delete stacks. For example, you might want to include resources that aren’t available as AWS CloudFormation resource types. You can include those resources by using custom resources. That way…

I love working with Go because it is easy to code and easy to build.

But like with all other programming languages, you have to deal with a lot of tooling. To have easy access to these tools, I put everything in a makefile so I can build, lint, and run everything from a single place.

After building a lot of services, I now always use the same kind of makefile to help me properly build my projects. In this article, I will share what targets I use and why they are useful.

Note: Most of the targets use Docker…

A cache that periodically refreshes in the background is a common pattern that is used in several use cases, but how can we achieve this in Go? In this article, I will guide you through the concepts behind the implementation to help you understand how it works.

I absolutely don’t think human/manual QA gates should be involved in between the writing of code and its being live. To avoid breaking things every time and to have an early cutoff system, you should use feature flags.

There are a lot of systems available on the market to manage your flags, like LaunchDarkly or UNLEASH, that have Golang support — but this option is expensive, and you have to host a server somewhere to manage your flags.

From this starting point, I came up with the idea to create a simple library with only one file in the back…

AWS Cloud Development Kit, better known as CDK, is changing the way we do infrastructure as code by using a proper programming language to build your infra.

Since we are building infra with dev tools, we should have a CI/CD for our CDK stack code that looks like any other project. If you look online, AWS explains how to do CI/CD with code build/code pipeline, but these probably aren’t the tools you are using in your day-to-day.

In this article, I will present to you the deployment pipeline I’m using to deploy my CDK stack based on GitHub and TravisCI.