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Finding AWS Lambda Cold Start Durations

I recently had to provide some numbers on AWS Lambda cold starts. These aren’t readily available in the AWS console. In fact, I couldn’t find a way anywhere online. There are lots of articles about AWS Lambda cold starts, how to avoid them, but none on how to measure them (without code changes). Here’s at […]

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The Lifetime of TODO Comments: the Results

I’ve had a longtime theory that TODO comments in code don’t get fixed any time soon. To get some numbers on this, I set out to analyze a set of GitHub repositories. You can read how I researched the lifetime of TODO comments in my previous post. In this post, I’ll look at the numbers. […]

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The Lifetime of TODO Comments

I have had a theory for some time that TODO comments in code remain there (almost) forever. They serve to appease the conscience of the developer, but they mostly are forgotten. But I wanted to prove this with numbers. The Plan I needed a large source of code that I could analyze. And the largest […]

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More Privacy with Brave and DuckDuckGo

This is 50/50 a real post and a service announcement. The short version is that I’ve removed Google Analytics from this site (and redstar.be, my legacy project blog for non-technical people). I’m also using Brave and DuckDuckGo now. Read on for the long version. Google Chrome For some time, I have felt fairly (but not […]

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Git rebase and autosquash

This may not be new to you, but I recently discovered another cool feature of Git. Rebasing with the autosquash option allows me to keep a clean log with minimal effort. I’ve written about interactive rebasing before. This makes it even easier. Interactive Rebasing You want to do an interactive rebase when you have a […]

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We All Fail

I recently saw a tweet on my Twitter-feed about failures and how we should also share our failures, not just our successes. Everyone experiences failure, but if we don’t share them, new developers will feel it’s not OK to make mistakes. So here are some of my mistakes and what I learned from them. This […]

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Finding Unknown Bugs with Property-Based Testing

This post was written for the NCrunch blog. You can find the original here. There are many ways of testing your application or library. The test pyramid provides a good starting point to the most common types of tests—unit tests, integration tests, end-to-end tests, and manual tests. But there are other types of tests, like […]

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