I do and write about

Serverless on AWS

(mostly)
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Should you minify Lambda code?

I thought minimizing Lambda function code was a best practice for Lambda optimization - it's even recommended by AWS in a not-so-old blog post. Turns out, I was wrong.
April 12, 2024
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Next-Level Integration Testing with ServerlessSpy

Integration testing for serverless Event-Driven Architecture is as necessary as it is time-consuming. Boilerplate code to write, long waiting for tests completion, tedious debugging. But no more.
March 26, 2024
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25 Good and Bad Serverless (and other) Announcements from re:Invent 2023

AWS re:Invent 2023 ended, so let's look at the most interesting announcements for serverless and more. There are exciting features to try and, maybe more importantly, features to avoid!
December 4, 2023
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Dynamic Content with Lambda Response Streaming

With some creativity, we can use Lambda Response Streaming to dynamically show status updates, like the progress of long-running processes. And with proper TypeScript types and generator functions, we can write clean, dynamic content streaming Lambda with composable payload enrichers that will impress your work colleagues (if they are into this stuff).
November 22, 2023
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Forcing Lambda Response Streaming to Flush Content

Lambda Response Streaming allows sending incremental responses, but those response chunks can arrive long after you write them. They are buffered in a rather unexpected way, delaying all messages you stream. But there is a workaround to force the stream to flush.
September 19, 2023
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Building a CDK Construct Library: thoughts and tips

I recently created a CDK library provisioning a CI/CD pipeline for serverless apps on AWS. Having finished the "regular" JS library, it took me a day to convert it to a "proper" CDK Construct library. Not long, and I learned a lot. Here are my thoughts and tips.
June 14, 2023
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AWS Lambda - Node.js vs. Python for serverless

After tabs vs. spaces, vi vs. emacs, let's fight over this: which is better, Node.js or Python for AWS Lambda and serverless in general? I have my opinion on this, and the fact I prefer TypeScript over Python makes me only slightly biased.
March 15, 2023
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Understanding Logical IDs in CDK and CloudFormation

CDK generates Logical IDs used by the CloudFormation to track and identify resources. In this post, I'll explain what Logical IDs are, how they're generated, and why they're important. Understanding this will help you avoid unexpected resource deletions and baffling "resource already exists" errors during deployment.
January 17, 2023
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Top 12 Serverless Announcements from re:Invent 2022

re:Invent 2022, the annual AWS conference in Las Vegas, is now behind us. I did not attend in person, but that gave me time to consolidate this list of top new serverless features while everyone else is sleeping off the intense 5-day conference. And I envy them just a little.
December 6, 2022
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How to pass AWS Certification exams

I've never cared too much about certificates, apart from the SSL ones (haha). And yet I passed 7 AWS exams. Why? How to prepare? How to pass? How to pay only 50% for the exam? I answer all this and more in this post.
November 23, 2022
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