Top Links from Issue #250

Should you use a Lambda Monolith, aka Lambdalith, for your API? by Rehan van der Merwe
This post looks at some arguments for and against a monolith Lambda API function (aka Lambdalith) compared to single-purpose Lambda functions per API route. It challenges “best practices” and argues that a monolith Lambda function is better in many cases when it comes to an API. IMPORTANT.

Node.js Worker Threads & AWS Lambda by Kevin Dico
What can executing JavaScript threads in parallel bring to the serverless table? Most Lambda functions we write are probably asynchronous and doesn’t require much effort during their design phases to correctly pull off.

Real-Time Data Aggregation Using DynamoDB Streams — Deliveroo’s System Design by Mahesh Saini
DynamoDB is great for quick data access, low-latency, and scalability. However, one downside is that it does not support aggregation functionality like relational DB’s do. This is how the team at Deliveroo tackled this problem using DynamoDB Streams.

Amazon EventBridge announces support for wildcard filters in rules
Amazon EventBridge rules now support wildcard filters, which enable you to match any character or sequence of characters within a string in your event payload. For example, you can use wildcards to match against values that end in a specific file type in a directory, such as “dir/*.

Test-Driven Development with AI: The Right Way to Code Using Generative AI by Allen Helton
Unit tests are the worst. Don’t get me wrong, they are an invaluable part of any CI pipeline or automation. But man are they a pain to write. Most developers I know, myself included, like to dive straight into code and would love to hand it over as soon as it’s functionally complete.