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[plus] CodeBuild Report Groups 101

AWS CodeBuild provides a fully managed, Docker-based build environment. You can use it in standalone mode or together with CodePipeline. Report Groups help you to make unit test results and code coverage visible because only the visible can be improved ...

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Amazon EventBridge versus Amazon SNS: What's the difference?

Amazon EventBridge (formerly CloudWatch Events) and Amazon SNS provide a way to send events to multiple subscribers. From a high-level perspective, both services are similar. This leads to the question: But how are they different? What advantages do the...

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Comparing API Gateways on AWS

Of the different API gateways offered by AWS, which option fits your needs? An API Gateway is “a server that acts as an API front-end, receives API requests, enforces throttling and security policies, passes requests to the back-end service, and then pa...

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[plus] Transition to IMDSv2 on EC2 - Introduction, Preparation, Pitfalls

IMDSv2 can improve EC2 security. For a couple of weeks, AWS Foundational Security Best Practices recommends that EC2 instances use IMDSv2 (control EC2.8). This video explains why IMDSv2 is useful and what attacks it protects you against, including a li...

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[plus] Tracing an HTTP request

What to do when customers complain about high latencies or server-side errors? How to find out which part of your infrastructure is causing trouble? Is something wrong with CloudFront, the ELB, or your web application? Our video demonstrates how to use...

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Introducing cloudonaut plus

We launched the cloudonaut blog in 2015. Since then, we have published more than 250 articles: tips and tricks, best practices, and service reviews. We enjoy writing about all things AWS a lot. So far, cloudonaut has been a side project. Our primary foc...

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Getting started with IPv6 on AWS

In mid-2019, AWS paid ~$108M to access 4 million IPv4 addresses from Amateur Radio Digital Communications - $27 per IP address. The reason why AWS spends so much money on IPv4 addresses is simple: There are no free IPv4 addresses that regional internet ...

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How to enable CORS on API Gateway with Lambda proxy integration?

When building single-page applications (SPA), you will sooner or later stumble upon Cross-Origin Resource Sharing (CORS). In short, a browser does only allow requests to the same same origin (domain, protocol and port), that was used for the initial req...

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Unboxing Amazon Timestream

My first job after graduation in 2011 was all about time-series data. My first task was to connect an exchange data feed with our on-premises time-series database (we used kdb+ by KX Systems). Whenever the exchange matches a buyer and seller, a trade is...

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Caching on AWS 101

Oftentimes, the idea of adding a caching layer arises when users start complaining about the performance of an application. Adding a cache to your architecture does not solve all problems — especially when implementing that change under pressure to fix ...

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