With API Gateway and Lambda, you can handle client errors gracefully by returning a 4xx response. module.exports.handler = async (event) => { // run validation logic return { statusCode: 400 } } This way, we can communicate clearly to the client that ther[...]

Intro During 2019 I started on the current project. At this project I’m working on, we are building a enterprise system for a government customer. When I got in significant parts had been developed of the frontend and backend system. My role when I start[...]

Intro During 2019 I started on the current project. At this project I’m working on, we are building a enterprise system for a government customer. When I got in significant parts had been developed of the frontend and backend system. My role when I start[...]

It’s been two years since I last wrote about Lambda layer and when you should use it. Most of the problem I discussed in that original post still stands: It makes it harder to test your functions locally. You will still need those dependencies to execute [...]

An interesting question came up in a conversation today: “How should I manage the Route53 DNS records in a multi-account environment?” Suppose you have configured an AWS Organization with different accounts for dev, staging and production environments. An[...]

While the physicists investigate the nature of the mysterious portal that has recently appeared in North London, several human beings recently came through the portal, which appears to be a gate into an alternative universe. As we understood from the last[...]

In the last post I discussed my preferred approach for modelling multi-tenant applications with AppSync and Cognito. This approach supports the common requirements in these applications, where there are a number of distinct roles within each tenant. This [...]

One thing Dr. Hermans mentioned in her book is retrieval practice. I have heard this term in other pedagogical literature. It basically means trying to remember some piece of information without reference to a memory aid.

Background As I wrote in my earlier blog post about using OSC to control a Behringer XR16, I’m working on code to make our A/V system at church much easier to work with. From an audio side, I’ve effectively accomplished two goals already: Remove the intim[...]

Thank you to Josh for asking this question on the AppSync Masterclass forum. His original question goes like this: Let’s say I want to add a one-to-many relationship from Profile to a new property called “Tag” (a complex object with “name” and “color” pro[...]