AWS Open Source Blog

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The CDK Patterns open source journey

This post was contributed by Matthew Coulter, Technical Architect at Liberty Mutual. In the summer of 2019, I successfully applied for a promotion to the position of account architect at Liberty IT Solutions, a part of Liberty Mutual Group. This changed everything, as I went from being the systems architect supporting one area to an […]

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Working backwards: The story behind the AWS Cloud Development Kit

Behind every successful open source project, you’ll find a real problem that needed to be solved. In this post, I will explore one such example through the backstory of the AWS Cloud Development Kit, or AWS CDK for short. A big part of this story involves the impact of the Amazon culture and our approach […]

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Improving zlib-cloudflare and comparing performance with other zlib forks

We worked with the maintainers of the Cloudflare fork of zlib (zlib-cloudflare) to improve the decompression performance on Arm and x86. With the changes, at level 6: On Arm: Compression performance: ~90 percent faster than zlib-madler (original zlib). Decompression performance: ~52 percent faster than zlib-madler. On x86: Compression performance: ~113 percent faster than zlib-madler. Decompression […]

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Testing AWS Lambda functions written in Java

Testing is an essential task when building software. Testing helps improve software quality by finding bugs before they reach production. The sooner we know there is a defect in code, the easier and cheaper it is to correct. Automated tests are a central piece in reducing this feedback loop. In association with a continuous integration […]

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How the jsii open source framework meets developers where they are

A central part of the value proposition that the AWS Cloud Development Kit (AWS CDK) is set to deliver is the ability for developers to express their infrastructure requirements in the programming languages they are most comfortable with. The DevOps movement has blurred the line between application code and infrastructure definition, and it is only […]

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Integrating EC2 macOS workers with EKS and Jenkins

Kicking off re:Invent 2020, VP of EC2 at AWS, Dave Brown, introduced an all new Amazon EC2 Mac instance. This new Amazon Elastic Compute Cloud (Amazon EC2) instance allows developers to build, test, package, and sign Xcode applications for the Apple platforms including macOS, iOS, iPadOS, tvOS, watchOS, and Safari. One common question I hear from […]

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How Falco uses Prow on AWS for open source testing

This post was co-written with Leo Di Donato, an open source software engineer at Sysdig in the Office of the CTO. Kubernetes has seen massive growth in the past few years. However, with all growth comes growing pains, and CI/CD has brought a few interesting problems to the space, especially for the open source community. […]

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werner_ vogel reinvent keynote announcing Amazon Managed Service for Grafana

re:Invent open source highlights: Week 3

Over the past three weeks, re:Invent 2020 has featured hundreds of sessions across many different topics and tracks. In this third and final post of the series, we’ll share open source highlights from week three. If you missed the previous articles, make sure you check out the first and second week’s highlights as well. Finally, […]

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re:Invent keynote week 2 Amazon SageMaker Clarify announcement on stage

re:Invent open source highlights: Week 2

Over the past three weeks, re:Invent 2020 has had hundreds of sessions across different topics and tracks. This is the second post of the re:Invent highlight series, covering week two open source highlights across various tracks and sessions. If you missed it, make sure you check out the first week’s highlights and week three. re:Invent […]

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Andy Jassy walking on stage during week 1 of re:Invent 2020

re:Invent open source highlights: Week 1

Over the past three weeks, re:Invent 2020 has had hundreds of sessions across many different topics and tracks. In this series of posts, I’ll share highlights from the open source track and sessions. This article covers the first week, so make sure you check out week two and three highlights. re:Invent 2020 open source highlights: […]

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