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Author: engineering

Engineering On-Demand Transportation for Business with Uber Central

When Uber launched in 2009, our mission was simple: make transportation as reliable as running water everywhere, for everyone. While our mission remains the same today, the number of Uber use cases have grown dramatically, motivating our engineers to think creatively about how we leverage our existing tech stack. In April 2017, Uber re-launched Uber Central (Central), an on-demand transportation solution that gives organizations a more efficient way to manage business travel. With Central, businesses can request a ride for…

3-D-printed implants can improve integration of amputee prosthetic devices with bone

Credit: Mary Ann Liebert, Inc., publishers A new study evaluated two additive manufacturing methods for producing either fine or coarse textured titanium implants and compared the strength of bone integration, interlocking, and torque in rats given one or both types of the implants in the distal femurs. The ability to apply this technology to customize implant surface textures and geometries to match the specific anatomy of human amputees is increasingly important as the trend in prosthetic devices moves toward transcutaneous…

Open Sourcing Iris and Oncall

Over the year and a half that we’ve been using Iris, we’ve onboarded many new services, and consequently have seen an explosion in the number of incidents it handles. However, with that growth comes the responsibility of guaranteeing reliable escalation for our users. Because of Iris’ unique place in LinkedIn’s monitoring and alerting stack, a single small misstep can result in a huge impact to the entire company. Absolute reliability is incredibly important, since so much of LinkedIn’s monitoring is…

Be our design/code/??? intern for fall 2017!

By Alyson Hurt and Brittany Mayes | June 29, 2017 Are you data-curious, internet savvy, and interested in journalism? Do you draw, design, or write code? We are looking for you. We’ve had journalists who are learning to code, programmers who are learning about journalism, designers who love data graphics, designers who love UX, reporters who love data, and illustrators who make beautiful things. Does this sound like you? Please join our team! It isn’t always easy, but…

What makes a great photo editing intern (Apply now for Fall 2017!)

Photo by Rachael Ketterer This is not your standard photo internship! This internship is an opportunity to learn more about the world of photo editing. Our goal isn’t to make you into a photo editor; we view this internship as a chance for you to understand what it is like to be an editor and improve your visual literacy, which can help you become a better photographer. The paid internship runs from September 11, 2017 to December 8, 2017. Applications…

NASA keeps a close eye on tiny stowaways — ScienceDaily

Wherever you find people, you also find bacteria and other microorganisms. The International Space Station is no exception. That generally is not a problem. For one thing, the space station is kept cleaner than many environments on Earth. Routine cleaning activities are included on astronaut task schedules. Cargo sent to the station, and the vehicles that carry it, undergo a rigorous cleaning process and monitoring for microorganisms before launch. Crew members assigned to the space station spend 10 days in…

Glimmer: Blazing Fast Rendering for Ember.js, Part 2

Since every mustache expression in our templates is backed by an object with the Dirtyable Tag on it, we know exactly when the UI needs to update. As we mentioned in the VM execution section, the initial render builds an updating program. Prior to updating the UI, we schedule a re-render, which effectively executes the opcodes in the updating program. During this process each opcode validates the tags that it knows about. If the tag is invalid, we know we…

Stupidly Simple DDoS Protocol (SSDP) generates 100 Gbps DDoS

Last month we shared statistics on some popular reflection attacks. Back then the average SSDP attack size was ~12 Gbps and largest SSDP reflection we recorded was: 30 Mpps (millions of packets per second) 80 Gbps (billions of bits per second) using 940k reflector IPs This changed a couple of days ago when we noticed an unusually large SSDP amplification. It’s worth deeper investigation since it crossed the symbolic threshold of 100 Gbps. The packets per second chart during the…