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Engineering News

I Wanna Go Fast – Load Balancing Dynamic Steering

Earlier this month we released Dynamic Steering for Load Balancing which allows you to have your Cloudflare load balancer direct traffic to the fastest pool for a given Cloudflare region or colo (Enterprise only). To build this feature, we had to solve two key problems: 1) How to decide which pool of origins was the fastest and 2) How to distribute this decision to a growing group of 151 locations around the world. Distance, Approximate Latency, and a Better Way…

A one year PWA retrospective – Pinterest Engineering – Medium

Zack Argyle | Engineering manager, Core Experience The idea of building a “Progressive Web App” (PWA) is not new, but its definition has changed with the emergence of key technologies like service workers. Now it’s finally possible to build great experiences in a mobile browser. Being an early adopter can be scary, so we’d like to share a brief overview of our experience building one of the world’s largest progressive web apps. Three years ago we looked at the state…

Beets and carrots could lead to stronger and greener buildings

Credit: Julija Sapic, Shutterstock According to engineers, root vegetables aren’t only good for the body. Their fibres could also help make concrete mixtures stronger and more eco-friendly. Construction projects have a significant impact on our environment. To combat this, stakeholders in the academic and industrial sectors have been looking for ways to make the industry more environment friendly. The EU-funded project B-SMART will be contributing to these efforts by focusing on concrete and the more culpable of its ingredients: cement.…

Carbon components from a 3-D printer

Part of 9T Labs team (left to right): Giovanni Cavolina, Filippo Kusch, Selçuk Ercan, Martin Eichenhofer, Chester Houwink next to the prototype 3-D printer. Credit: Courtesy of 9T Labs Three ETH alumni have developed a 3-D printer capable of manufacturing components from carbon fiber composites. Their ETH spin-off, 9T Labs, could bring a breakthrough for the manufacturing and utilization of extremely lightweight and strong parts. Stronger than steel, but up to five times lighter: carbon fibre-reinforced plastic (CFRP), often simply…

Why won’t Parker Solar Probe melt? — ScienceDaily

This summer, NASA’s Parker Solar Probe will launch to travel closer to the Sun, deeper into the solar atmosphere, than any mission before it. If Earth was at one end of a yard-stick and the Sun on the other, Parker Solar Probe will make it to within four inches of the solar surface. Inside that part of the solar atmosphere, a region known as the corona, Parker Solar Probe will provide unprecedented observations of what drives the wide range of…

Relax, just break it — ScienceDaily

The properties of a solid depend on the arrangement of its atoms, which form a periodic crystal structure. At the nanoscale, arrangements that break this periodic structure can drastically alter the behavior of the material, but this is difficult to measure. Recent advances by scientists at the U.S. Department of Energy’s (DOE) Argonne National Laboratory are starting to unravel this mystery. Using state-of-the art neutron and synchrotron X-ray scattering, Argonne scientists and their collaborators are helping to answer long-held questions…

New instruments push boundaries for precise measurements in jet engines, gas turbines

A Purdue University-affiliated startup is developing instruments to precisely measure pressure, temperature and other analytics inside the harsh environments of rocket engines and gas turbines. Petal Solutions LLC was founded by Guillermo Paniagua, a professor of mechanical engineering, and Valeria Andreoli, David Cuadrado and James Braun, doctoral research assistants. Paniagua said the group’s expertise in computational fluid dynamics has allowed the researchers to push the boundaries in cooling and design probe technologies. “It is fantastic to be able to…

Open sourcing oomd, a new approach to handling OOMs – Facebook Code

As our global community has grown to more than 2.2 billion people, Facebook’s infrastructure has grown to span News Feed, Messenger, Instagram, WhatsApp, Oculus, and a range of other products. These products and the systems powering them run on millions of servers spread across multiple geo-distributed data centers. As our infrastructure has scaled, we’ve found that an increasing fraction of our machines and networks span multiple generations. One side effect of this multigenerational production environment is that a new software…

Configuring servers at scale – Facebook Code

Facebook’s infrastructure consists of many geo-distributed data centers that host millions of servers. These servers run a number of systems, ranging from front-end web servers to News Feed aggregators to our messaging and live video applications. In addition to regular code pushes, we also push thousands of configuration changes to our servers every day. Thus it is fairly common for our servers to execute trillions of configuration checks. One example of a configuration check is a web server personalizing the…

Productivity at Scale: How We Improved Build Time by 400% at LinkedIn

Co-authors: Szczepan Faber, Yiming Wang, Mihir Gandhi, Deep Majumder, and Irina Issayeva Introduction At LinkedIn, we have 500+ microservices (3,500 end-points), which make up various aspects of the software ecosystem. This translates to a significant number of web applications. In 2012, we added the Play Framework to our tech stack to build microservices and web applications. Since then, over 330 Play apps have been created and hundreds of engineers work on them daily. One of these Play apps is a service that supports the entire API traffic from the LinkedIn website and the mobile clients, handling over 130,000 requests per…