Tag: Availability

In this blog, we explore Automatic Target Weights (ATW), which can reduce the number of errors users experience when using web applications. ATW provides the ability to detect and mitigate gray failures for targets behind Application Load Balancers (ALB). A gray failure occurs when an ALB target passes active load balancer health checks, making it look healthy, but still returns errors. This scenario could be caused by many things, including application bugs, a dependency failure, intermittent network packet loss, a cold cache on a newly launched target, CPU overload, and more.

When thinking about architecture, it’s very common to come across scenarios where there is no right or wrong answer – the best answer is “it depends”. You must carefully consider the tradeoffs between cost, performance, reliability, and operational efficiency before coming to a decision. A little planning ahead of time can help you avoid numerous […]

Introduction Worldwide, millions of customers are actively using AWS to build applications for every imaginable use case, with a variety of regions in which they can deploy infrastructure. An AWS Region is a physical location where AWS clusters data centers and operates regional services, like AWS Elastic Compute Cloud (EC2) and Amazon Simple Storage Service […]

First of all, thank you to each and every one of you who use the Amazon CloudFront service every day. CloudFront’s growth and evolution over the past decade would not have been possible without your feedback—input that has shaped the service since day one. We are excited to have just celebrated our 10-year anniversary of […]