Rehan van der Merwe

I could use provisioned concurrency, but then I would need to pay a fixed monthly fee, no thank you.

GitHub - rehanvdm/tailscale-lambda-proxy: A CDK construct that creates an AWS Lambda Function acting as a transparent proxy to your Tailscale network. A CDK construct that creates an AWS Lambda Function acting as a transparent proxy to your Tailscale network. - rehanvdm/tailscale-lambda-proxy

I have this Tailscalse Lambda Proxy (github.com/rehanvdm/tai...) that needs to be warm.

When Alexa does the OAuth call (for my Home Assistant integration) it has to complete in less than 4.5 seconds and the proxy cold start + first connection to tailscale takes between 5-10+ seconds.

Supabase Select Build Stage YouTube video by Supabase

Did you catch Zeno's (Resend CEO) presentation at Supabase Select? Fun fact, he created Dracula while in the hospital 🐐

www.youtube.com/live/GbBGYNN...

It's 2025, and I'm creating a "lambda warmer" function, ugh..

GitHub - rehanvdm/cdk-express-pipeline: CDK Express Pipelines is a library built on the AWS CDK, allowing you to define pipelines in a CDK-native method. It leverages the CDK CLI to compute and deploy... CDK Express Pipelines is a library built on the AWS CDK, allowing you to define pipelines in a CDK-native method. It leverages the CDK CLI to compute and deploy the correct dependency graph between...

...
🔕 Filter out noisy resources or properties for cleaner diffs
🌍 Multiple assembly support (environment-aware)
🤝 Fully compatible with CDK Express Pipeline -> github.com/rehanvdm/cdk...

🚀 It’s here: Visualize your CDK Diffs directly on your PRs! Powered by the new CDK Express Pipeline GitHub Diff Action -> github.com/rehanvdm/cdk...

Key features:
⚡ Run diffs in parallel to save time
📑 Collect outputs from multiple stacks and add them neatly to your PR description
...

What is stopping you from having CDK Diffs on Pull Requests like this?

Did you know your Lambdas can be throttled even though they are under the account concurrency? This happens if the sum of their requests per second exceeds 10x the account concurrency.

Always inspiring to see so much curiosity and energy from the next generation of builders!

Earlier this week, I had the great opportunity to speak with students at Tshwane University of Technology (TUT) about AWS Cloud and the Serverless mindset.

We explored real-world use cases, career paths in cloud, and how Serverless is changing the way we build applications.

The CDK Express Pipeline GitHub README was getting out of hand, so I've created a documentation website to organize it better!

Is it perfect? No, but done is better than perfect.

rehanvdm.github.io/cdk-express-...

TIL that when GitHub does a rebase, commits will have different hashes 🤦

Not great when you are promoting assets from lower branches/envs and make use of the commit hash.

docs.github.com/en/repositor...

🚀 Have you seen last week's CDK Express Pipeline changelog? Here's what's new:
✨ Deployment order now visualized with a Mermaid diagram
✨ New option to deploy stages sequentially
✨ Individual stack deployment order now displayed in [brackets]

👉 Check it out: github.com/rehanvdm/cdk...

#AWS #CDK

Is there something that you have seen or using that is useful?

GitHub - towardsthecloud/aws-cdk-starterkit: Create and deploy an AWS CDK TypeScript app on your AWS account in less than 5 minutes using GitHub actions! Create and deploy an AWS CDK TypeScript app on your AWS account in less than 5 minutes using GitHub actions! - towardsthecloud/aws-cdk-starterkit

⭐️ aws-cdk-starterkit – A ready-to-go TypeScript CDK starter kit with GitHub Actions for deployment in under 5 minutes github.com/towardsthecl...
⭐️ cdk-diff-action – GitHub Action to run cdk diff on your PRs to track infrastructure changes github.com/corymhall/cd...

GitHub - open-constructs/cdk-serverless: AWS CDK Serverless Toolsuite AWS CDK Serverless Toolsuite. Contribute to open-constructs/cdk-serverless development by creating an account on GitHub.

⭐️ cdk-serverless – Toolkit simplifying serverless app development with patterns and live Lambda updates github.com/open-constru...
⭐️ cdk-express-pipeline – CDK-native, build-system-agnostic pipeline library, faster and simpler than CDK Pipelines github.com/rehanvdm/cdk...

GitHub - IamFlowZ/type-safe-cdk-env: Helper function to parse JSON files into environment variables within CDK stacks Helper function to parse JSON files into environment variables within CDK stacks - IamFlowZ/type-safe-cdk-env

⭐️ type-safe-cdk-env – Ensures type-safe and reliable environment variable management in CDK apps github.com/IamFlowZ/typ...
⭐️ @matthewbonig/secret – Construct to create Secrets Manager secrets without unexpectedly recreating them constructs.dev/packages/@ma...

GitHub - udondan/iam-floyd: AWS IAM policy statement generator with fluent interface AWS IAM policy statement generator with fluent interface - udondan/iam-floyd

⭐️ iam-floyd – Fluent-interface generator for AWS IAM policy statements, covering all services/actions/conditions github.com/udondan/iam-...
⭐️ deploy-time-build – CDK construct enabling build jobs (frontend, container, SOCI index) at deployment time github.com/tmokmss/depl...

GitHub - dbsystel/cdk-sops-secrets: CDK Construct that syncs your sops secrets into AWS SecretsManager secrets. CDK Construct that syncs your sops secrets into AWS SecretsManager secrets. - dbsystel/cdk-sops-secrets

Have you seen these open source CDK gems (no particular order)?

⭐️ cdk-sops-secrets – CDK construct to sync SOPS-encrypted secrets into AWS Secrets Manager github.com/dbsystel/cdk...

Two new features for CDK Express Pipeline.

1. Deploy Stages Sequentially within a Wave
2. The order of operation now indicates what stack will be deployed based on your stack selector (the command in the second screenshot targeted was: `cdk deploy 'Wave2_*'`)

github.com/rehanvdm/cdk...

Key benefits:
• Up to 2x faster deployments
• Works with any CI/CD system, not just CodePipeline
• Can be used locally
• No need for long-lived secrets (uses OIDC)
• More flexible stack management

Complete with benchmarks, code examples, and comparison of deployment approaches. Check it out!

Migrate from CDK Pipelines to CDK Express Pipeline A practical guide to migrating from AWS CDK Pipelines to CDK Express Pipeline. Learn the reasons, benefits, and step-by-step process, with benchmarks and code comparisons.

New blog post 🚀

If you're using AWS CDK Pipelines but struggling with its complexity and slow performance, I've written a detailed guide on migrating to CDK Express Pipeline.

rehanvdm.com/blog/migrate...

#AWS #CDK #DevOps

a cartoon of a pony with the words " they will never find the body " below it ALT: a cartoon of a pony with the words " they will never find the body " below it

Finding a bad behaving SQL query is like a murder mystery and who doesn't love that

✨ Features:

✅ Works on any system, your local machine, GitHub Actions, GitLab, etc.
⚡️ Fast: deploy stacks in parallel
📦 Stages and Waves are plain classes, not Constructs, so they don’t mess with nested Construct IDs (unlike CDK Pipelines)
🧑‍💻 Supports TS and Python CDK

🧠 How does it work?

The CDK Express Pipeline leverages the CDK CLI to compute and deploy the correct dependency graph between Waves, Stages, and Stacks using the `.addDependency` method, making it build-system agnostic.

CDK Express Pipeline Tutorial Learn how to create and manage simple and fast deployment pipelines using the cdk-express-pipeline library, a powerful tool built on top of AWS CDK that enables CDK-native pipeline definitions.

📘The AWS CDK Express Pipeline library helps you create simple and fast deployment pipelines using the AWS CDK.

This new tutorial shows you how to set up and manage deployments with cdk-express-pipeline on GitHub.

rehanvdm.com/blog/cdk-exp...

FEATURE REQUEST - I actually want something AI

`@slack what have I been up to last week and what still needs attention`

GitHub - rehanvdm/cdk-express-pipeline: CDK Express Pipelines is a library built on the AWS CDK, allowing you to define pipelines in a CDK-native method. It leverages the CDK CLI to compute and deploy... CDK Express Pipelines is a library built on the AWS CDK, allowing you to define pipelines in a CDK-native method. It leverages the CDK CLI to compute and deploy the correct dependency graph between...

Thanks for having me @Lockhead, it was fun! Here is the direct link to the repo: github.com/rehanvdm/cdk...

Check it out, this time I am in front of the camera not behind it 🙂 talking about CDK Express Pipelines an alternative to CDK Pipelines. Spoiler alert Express is faster, less opinionated and runs anywhere, even locally!