The way that the NetScaler load balancer handles oversized HTTP header is not quite straightforward when combined with layer 7 policies and may result in unexpected consequences and bad user experiences if overlooked. This article explains how the header limit works and offers our recommendations on how to manage it properly.
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In our first article, we introduced the concept and some of the benefits of event sourcing. For this article, we are going to get very specific about how we implemented event sourcing for the Enterprise Continuous Delivery (ECD) project here at eBay.
Using an Event-centric approach has enabled our team at eBay to scale to handle millions of events with the resiliency to recover from failures as quickly and reliably as possible. Though similar approaches have been widely adopted to augment large-scale data applications, for eBay's Continuous Delivery team, Event Sourcing is at the heart of decision-making and application development. To that end, we've built a system that continuously scales and tests our ability to handle an increasing volume of events and an ever growing list of external data sources and partner integrations.
When applications become big and complex, we are presented with a whole new set of challenges. As engineers, we have to find ways to overcome them. Read how we addressed one of those challenges: Spring integration tests performance.
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Traffic on ebay.com is processed by thousands of layer 7 policies on the load balancers. Clearly understanding the processing order ensures availability (by avoiding misconfigurations) and performance (by prioritizing the policies efficiently).
Deep Learning (DL) is revolutionizing the face of many industries these days, such as computer vision, natural language processing, and machine translation, and it penetrates many science-driven products and technological companies, including eBay. These days, DL is taking its first strides in eBay’s Quality Engineering (QE) space, and it has already proven to outperform the best test veteran and industry-grade applications one could find.
As a React application grows, it is important to ensure that all the components continue to work together. Using Enzyme, we created an integration testing framework that tests a React application in its entirety, without relying on a server. The result was a lightning fast integration test suite that gives us high confidence that the critical paths of our application are always working.