Jeroen Reijn's Avatar

Jeroen Reijn

@jeroenreijn.com

☁️ Cloud Solutions Architect @ Luminis. πŸš€ AWS Community Builder #serverless πŸ“ Blogs at https://www.jeroenreijn.com

338
Followers
267
Following
158
Posts
25.10.2024
Joined
Posts Following

Latest posts by Jeroen Reijn @jeroenreijn.com

Preview
The Least Reliable AWS Region in 2025 | StatusGator We analyzed if AWS’ N. Virginia region remains the least reliable in 2025. Overview of outages, affected services, and the massive October 20 AWS incident, with insights from StatusGator’s real-time m...

In interesting analysis of all AWS regional outages in 2025 statusgator.com/blog/aws-lea...

17.01.2026 17:13 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Amazon ECS Express Mode from an IaC perspective Amazon recently launched a new feature for Amazon ECS called ECS Express Mode. While reading the...

✍️ New blog post by Jeroen Reijn

Amazon ECS Express Mode from an IaC perspective

#aws #ecs #infrastructureascode #cdk

20.12.2025 21:34 πŸ‘ 4 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Congrats! It’s still on my to watch list!

07.12.2025 15:38 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
China-nexus cyber threat groups rapidly exploit React2Shell vulnerability (CVE-2025-55182) | Amazon Web Services Within hours of the public disclosure of CVE-2025-55182 (React2Shell) on December 3, 2025, Amazon threat intelligence teams observed active exploitation attempts by multiple China state-nexus threat g...

Pretty cool how AWS monitors and protects against threats like this.

China-nexus cyber threat groups rapidly exploit React2Shell vulnerability (CVE-2025-55182) | AWS Security Blog

aws.amazon.com/blogs/securi...

06.12.2025 19:46 πŸ‘ 2 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

This looks really interesting!

02.12.2025 18:26 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
The AWS News Feed Keep track of AWS news and blogs. See what's hot, read summaries, search, set bookmarks and ratings, and categorize articles with tags.

Amazon released 40 new features during Matt Garman’s opening keynote! Go check out buff.ly/xNZK1L9 to see all of them, including related blog posts πŸš€

02.12.2025 18:10 πŸ‘ 5 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
Preview
AWS - Twitch Road to re:Invent 2025

Wanna watch a crazy live hackathon? Watch multiple teams compete in the road to re:invent challenge on the AWS Twitch #aws #roadtoreinvent m.twitch.tv/aws?desktop-...

30.11.2025 19:38 πŸ‘ 6 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
GitHub - aws/aws-lambda-roadmap Contribute to aws/aws-lambda-roadmap development by creating an account on GitHub.

πŸš€ πŸ†• The AWS Lambda roadmap is now open and on GitHub! See what we're working on, researching, and planning. Provide feedback, collaborate on ideas!

s12d.com/lambda-roadmap

#aws #serverless

25.11.2025 20:38 πŸ‘ 13 πŸ” 2 πŸ’¬ 1 πŸ“Œ 0
Preview
The Future of AWS CodeCommit | Amazon Web Services Back in July 2024, we announced plans to de-emphasize AWS CodeCommit based on adoption patterns and our assessment of customer needs. We never stopped looking at the data or listening to you, and what...

I did not see that coming! aws.amazon.com/blogs/devops...

24.11.2025 21:34 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Interesting! I wasn’t aware such a library/framework existed.

15.11.2025 09:29 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

AWS has also removed a log4j patch from the Java 25 runtime to restore optimal performance. This was implemented when Log4shell hit the industry and was in all previous runtimes.

15.11.2025 08:19 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Starting with Java 25, Lambda no longer stops tiered compilation at C1 for SnapStart and Provisioned Concurrency.

15.11.2025 08:19 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

If you deploy Java 25 functions using container images, you can either implement your own AOT caches or continue using CDS.

15.11.2025 08:19 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Lambda’s benchmarking results show that AOT caches deliver faster cold start performance compared to CDS. πŸš€ AOT caches are now enabled by default in the Java 25 runtime to provide performance benefits.

15.11.2025 08:19 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

AWS Lambda replaces the traditional Class Data Sharing (CDS) with ahead-of-time (AOT) caches. This is an advanced optimization feature from Project Leyden that is designed to improve application startup times and reduce memory footprint.

15.11.2025 08:19 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

There is a lot to unpack from this release though. It’s not just a runtime update.

15.11.2025 08:19 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
AWS Lambda now supports Java 25 | Amazon Web Services You can now develop AWS Lambda functions using Java 25 either as a managed runtime or using the container base image. This blog post highlights notable Java language features, Java Lambda runtime upda...

This is great! Amazing to see it gets released so close to the Java 25 release! aws.amazon.com/blogs/comput... #java #aws #lambda

15.11.2025 08:19 πŸ‘ 8 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
Amazon ECS now supports built-in Linear and Canary deployments - AWS Discover more about what's new at AWS with Amazon ECS now supports built-in Linear and Canary deployments

In July, AWS announced a powerful update to Amazon ECS with built-in support for blue/green deployments. Now two additional built in deployment strategies have been added: linear and canary deployment. This eliminates having to use CodeDeploy. aws.amazon.com/about-aws/wh...

30.10.2025 22:48 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thanks! πŸ™

30.10.2025 13:22 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Likewise!

25.10.2025 08:54 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

#hugops to all on call AWS engineers

20.10.2025 17:23 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

It seems some services in us-east-1 still have degraded operations. That’s a long disruption 😲. I hope they will share an extensive post mortem. Looking forward to learn from the lessons learned!

20.10.2025 16:39 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Ah yes I misunderstood. I expect the same that people are misreporting.

20.10.2025 09:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Azure status Check the current Azure health status and view past incidents.

Not sure what that graph is based on though. I don't see any issues when looking at the Azure status page. It might be lagging behind off course. azure.status.microsoft/en-gb/status

20.10.2025 09:27 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

While trying to figure out of there was anything wrong with our jira and bitbucket cloud signin it seems AWS is having issues in us-east-1 .

20.10.2025 08:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Big news: AWS expands AI certification portfolio and updates security certification | Amazon Web Services AWS announces major certification updates, introducing the AWS Certified Generative AI Developer - Professional certification and refreshing the AWS Certified Security – Specialty exam with enhanced...

You can now become an AWS Certified Generative AI Developer - Professional! πŸ˜… Machine Learning specialty is being retired and the Security Specialty is getting an update! #aws #certification aws.amazon.com/blogs/traini...

14.10.2025 17:55 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yeah I had the same feeling and figured the same πŸ˜…

13.10.2025 19:44 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yes that was a late one! I think it was around 6 or 7pm or so Vegas time

13.10.2025 10:26 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yeah I know. Last time I was in Vegas though. Time wise it would have been much better if it was around 15:30 Vegas time like this year. Especially with all the long days and jet lag πŸ˜€

13.10.2025 10:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
AWS re:Invent 2025 Keynotes | Amazon Web Services Hear from AWS leaders about what’s top of mind for them, from innovations in infrastructure and AI/ML to the latest trends and breakthroughs in cloud computing.

Well it seems that I will most likely watch this years Werner Vogels re:Invent keynote the next day as it seems to start at 30 minutes past midnight Amsterdam local time. No keynote watch party this time πŸ˜… reinvent.awsevents.com/keynotes/ #aws #reinvent

13.10.2025 10:01 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0