Rehan van der Merwe
@rehanvdm.bsky.social
DevOps @resend.com
AWS Hero | Blogger | Speaker | Serverless and coffee junkie
Just a developer for fun
AWS Hero | Blogger | Speaker | Serverless and coffee junkie
Just a developer for fun
🚀 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
...
Key features:
⚡ Run diffs in parallel to save time
📑 Collect outputs from multiple stacks and add them neatly to your PR description
...
September 8, 2025 at 7:19 AM
🚀 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
...
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?
August 20, 2025 at 7:37 AM
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.
August 7, 2025 at 5:51 AM
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.
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.
We explored real-world use cases, career paths in cloud, and how Serverless is changing the way we build applications.
August 1, 2025 at 6:46 AM
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.
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-...
Is it perfect? No, but done is better than perfect.
rehanvdm.github.io/cdk-express-...
July 17, 2025 at 7:11 AM
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-...
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...
Not great when you are promoting assets from lower branches/envs and make use of the commit hash.
docs.github.com/en/repositor...
July 11, 2025 at 8:03 AM
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...
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
✨ 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
June 23, 2025 at 7:54 AM
🚀 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
✨ 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
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...
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...
June 17, 2025 at 6:32 AM
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...
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...
Have you seen the AWS Data Landing Zone CDK Construct? It creates the groundwork/platform enabling the rest of your teams https://datalandingzone.com/
Do you see the value in using a Landing Zone? If so what are you using today?
Do you see the value in using a Landing Zone? If so what are you using today?
February 6, 2025 at 11:14 AM
Have you seen the AWS Data Landing Zone CDK Construct? It creates the groundwork/platform enabling the rest of your teams https://datalandingzone.com/
Do you see the value in using a Landing Zone? If so what are you using today?
Do you see the value in using a Landing Zone? If so what are you using today?
We get it already!
January 28, 2025 at 7:51 AM
We get it already!
> If you don’t remove the resources, enrollment into the new OU will fail, somewhat spectacularly.
😂 "somewhat spectacularly" The docs calling out that you really screwed up, pitty you only get to read it after the screw-up
😂 "somewhat spectacularly" The docs calling out that you really screwed up, pitty you only get to read it after the screw-up
January 16, 2025 at 9:03 AM
> If you don’t remove the resources, enrollment into the new OU will fail, somewhat spectacularly.
😂 "somewhat spectacularly" The docs calling out that you really screwed up, pitty you only get to read it after the screw-up
😂 "somewhat spectacularly" The docs calling out that you really screwed up, pitty you only get to read it after the screw-up
We should start a club.. 🫠
Rain spiders, bit just hurts, not sure how much.
I hate spiders so much 😭
Rain spiders, bit just hurts, not sure how much.
I hate spiders so much 😭
January 3, 2025 at 2:14 PM
We should start a club.. 🫠
Rain spiders, bit just hurts, not sure how much.
I hate spiders so much 😭
Rain spiders, bit just hurts, not sure how much.
I hate spiders so much 😭
And now we wait
December 21, 2024 at 5:36 AM
And now we wait
Last month we had two, the one in the kitchen and then another one while I was putting the bed to sleep. I saw something make a shadow on the wall 😭😭
December 13, 2024 at 4:23 AM
Last month we had two, the one in the kitchen and then another one while I was putting the bed to sleep. I saw something make a shadow on the wall 😭😭
TIL `curl` has built-in support to generate AWS SigV4 headers so you can do AWS API calls with a single command 😮
December 10, 2024 at 7:18 AM
TIL `curl` has built-in support to generate AWS SigV4 headers so you can do AWS API calls with a single command 😮
Here are ~40 Pre:Invent launches that made my radar, did I miss anything significant? What has been your favourite so far?
gist.github.com/rehanvdm/91f...
gist.github.com/rehanvdm/91f...
November 25, 2024 at 6:26 AM
Here are ~40 Pre:Invent launches that made my radar, did I miss anything significant? What has been your favourite so far?
gist.github.com/rehanvdm/91f...
gist.github.com/rehanvdm/91f...
AWS Cognito is the first service to bring a pricing tier list into the Portal?
November 23, 2024 at 9:52 AM
AWS Cognito is the first service to bring a pricing tier list into the Portal?
This really made me 😂 then 😭. I really need a clear definition from AWS between the words:
- Serverless
- Managed/Elastic capacity
> for as low as $3 per hour
That's $2160 a month 🤡
- Serverless
- Managed/Elastic capacity
> for as low as $3 per hour
That's $2160 a month 🤡
November 19, 2024 at 3:27 PM
This really made me 😂 then 😭. I really need a clear definition from AWS between the words:
- Serverless
- Managed/Elastic capacity
> for as low as $3 per hour
That's $2160 a month 🤡
- Serverless
- Managed/Elastic capacity
> for as low as $3 per hour
That's $2160 a month 🤡
It's been this long since I remember Bluesky is a thing.
Hoping to get rid of Twitter for good.
Who should I be following here?
Hoping to get rid of Twitter for good.
Who should I be following here?
November 17, 2024 at 5:06 PM
It's been this long since I remember Bluesky is a thing.
Hoping to get rid of Twitter for good.
Who should I be following here?
Hoping to get rid of Twitter for good.
Who should I be following here?
This week, I became a dad 😃
June 25, 2023 at 1:31 PM
This week, I became a dad 😃
