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Engineering News

Introducing QALM, Uber’s QoS Load Management Framework

Much of Uber’s business involves connecting people with people, making the reliability of our customer platform crucial to our success. The customer platform supports everything from ridesharing and Uber Eats, to Uber Freight and Uber for Business. Our platform team owns four services with thousands of hosts, serving peak traffic up to 300,000 requests per second, with more than 450 internal services. Any system of this complexity is likely to experience outages, especially one that has grown so quickly. Analyzing…

Robotic collaboration in timber construction

At Spatial Timber Assemblies, man and machine work together in both the planning and the manufacturing process. Credit: NFS Digital Fabrication / Roman Keller Digitalisation has found its way into timber construction, with entire elements already being fabricated by computer-aided systems. The raw material is cut to size by the machines, but in most cases it still has to be manually assembled to create a plane frame. In the past, this fabrication process came with many geometric restrictions. Under the…

Combining cutting-edge materials for more efficient, sensitive gaseous sensors

This sensor can detect methane at much lower concentrations than current ones. It relies on nanotechnology developed at the Center for Nanoscale Materials, an Office of Science user facility. The human nose can distinguish among a trillion different combinations of smells. Even so, there are plenty of gases that our noses can’t detect at the level of sensitivity we need. That’s where gaseous sensors come in. While some of the first sensors were animals – like canaries in coal mines…

Data-driven development with Cloudflare Mobile SDK

If your app loads critical resources over the network, it’s relying on your user’s mobile network connection to deliver an engaging experience. Network errors occur in 3 to 12% of app sessions depending on infrastructure reliability and user geography. How much engagement are you losing in your app to network errors? Chances are, you don’t know. We didn’t either, until we built a free tool that helps Android and iOS developers visualize and understand their mobile app’s network utilization. Introducing…

Electric textile lights a lamp when stretched

Anja Lund with a piece of the electric textile in the shoulder strap of a bag (the lighter-coloured part). To the right: a LED that flashes because electricity is generated when the textile is stretched. Credit: Johan Bodell/Chalmers University of Technology Researchers at Chalmers University of Technology have developed a fabric that converts kinetic energy into electric power. The greater the load applied to the textile and the wetter it becomes, the more electricity it generates. The results are now…

migrating Medium’s codebase without slowing down

Five years ago, Medium was built using the latest tools and frameworks by people who had experience with those tools. It’s time that we update these tools and frameworks. However, migrating an entire system to new tools and frameworks isn’t an easy task. And doing that while not impacting feature development? That’s even harder. So, how would you migrate off of your existing system, without hindering feature development, but also incrementally gain the benefits of the new system along the…

Launching the Netflix Public Bug Bounty Program – Netflix TechBlog – Medium

Netflix’s goal is to deliver joy to our 117+ million members around the world, and it’s the security team’s job to keep our members, partners and employees secure. We have been engaging with the security community to achieve this goal through programs like responsible disclosure and private bug bounty over the past 5 years. We are now publicly launching our bug bounty program through the Bugcrowd platform to continue improving the security of our products and services while strengthening our…

Protecting Security Researchers | Dropbox Tech Blog

At Dropbox, we encourage, support, and celebrate independent open security research. One way we do this is via our bug bounty program. We recently tripled our rewards to industry leading values. We also celebrated some of the amazing hacker community results with top-up bonuses, where we retroactively issued additional rewards for particularly unusual, clever, or high-impact findings. This post, however, is not about bug bounty programs. While a well-run bug bounty program is mandatory for maintaining top-tier security posture, this…

Depth-sensing imaging system can peer through fog

The MIT system was able to resolve images of objects and gauge their depth at a range of 57 centimeters. Credit: Melanie Gonick/MIT MIT researchers have developed a system that can produce images of objects shrouded by fog so thick that human vision can’t penetrate it. It can also gauge the objects’ distance. An inability to handle misty driving conditions has been one of the chief obstacles to the development of autonomous vehicular navigation systems that use visible light, which…

NASA marshall advances 3-D printed rocket engine nozzle technology

Through hot-fire testing at NASA’s Marshall Space Flight Center, engineers put this nozzle through its paces, accumulating more than 1,040 seconds at high combustion chamber pressures and temperatures. Now, this technology is being licensed and considered in commercial applications across the industry. Credit: NASA/MSFC/David Olive Rocket engine nozzles operate in extreme temperatures and pressures from the combustion process and are complex and expensive to manufacture. That is why a team of engineers at NASA’s Marshall Space Flight Center in Huntsville,…