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Category: Construction Engineering

Preventing Request Loops Using CDN-Loop

HTTP requests typically originate with a client, and end at a web server that processes the request and returns some response. Such requests may pass through multiple proxies before they arrive at the requested resource. If one of these proxies is configured badly (for instance, back to a proxy that had already processed it) then the request may be caught in a loop. Request loops, accidental or malicious, can consume resources and degrade user’s Internet performance. Such loops can even…

Engineering dive into Slack Enterprise Key Management

Over the years, customers have asked us for stricter control over and visibility into their data in Slack, all while maintaining the product’s most essential features, such as link unfurling, mentions, notifications, and search. We talked with many of these customers to get a better understanding of their threat models, how they’d like to assert that control, and what kind of visibility they were lacking. That brings us to this most auspicious day: The release of Slack Enterprise Key Management,…

Facebook announces next-generation Open Rack frame

As a founding member of the Open Compute Project (OCP) community, Facebook embraces a collaborative approach to solving industry-wide problems. One of the more pressing problems facing the industry today is how to stay ahead of increasing power demands from artificial intelligence and networking. To address this concern, we are announcing a new initiative to drive convergence and build uniformity around the Rack & Power design. Over the past few months, we have been working to develop a new architecture…

3-D printing shapes building industry, creates rapid construction potential

Big Area Additive Manufacturing at DOE’s Manufacturing Demonstration Facility at ORNL was used to 3D print molds that were needed to cast the precast concrete facade of a 42-story tower in New York City. Credit: Oak Ridge National Laboratory A residential and commercial tower under development in Brooklyn that is changing the New York City skyline has its roots in research at the Department of Energy’s Oak Ridge National Laboratory. The tower’s white precast concrete façade rising from the waterfront…

Reinventing our data center network with F16, Minipack

When we first shared details of our data center fabric, we were supporting 1.35 billion people on one app. Since then, we have openly shared our journey of building our own switches, writing FBOSS (our own network operating system) and continuing to scale out various aspects of the network. Most recently, we announced last year our distributed network system, Fabric Aggregator. Fast-forward to today. Our data center fabrics now support more than 2.6 billion people on a family of video-enabled,…

AI blog roundup: See what’s on our new AI blog

On our new AI blog, we shed light on the Smart Camera that powers Portal, our video-calling device; share a new technique for safety-critical neural network applications; and discuss the future of deep learning hardware. Yann LeCun on the future of deep learningThe future of AI and deep learning is closely tied to the hardware at our disposal. Facebook’s chief AI scientist discusses new architectural concepts — such as dynamic networks, associative-memory structures, and sparse activations — that will affect…

College campuses are thinking about lactation spaces — but could be doing more — ScienceDaily

A college campus may not seem like a place that requires extensive lactation support. But while most undergraduates don’t have children, several populations within these higher-education environments — graduate students, faculty, staff, visitors — may need access to breastfeeding and pumping spaces. Diane Spatz of the University of Pennsylvania School of Nursing and the Children’s Hospital of Philadelphia has been advocating for and researching the needs of breastfeeding moms for nearly two decades. Most recently, she and colleagues from the…

Mizzou MCAA chapter takes third in national competition

Mizzou’s chapter named their company Star Solutions and made a more than 60 page proposal outlining a precise budget, fabrication and installation processes and safety procedures. Four judges watched their presentation, then asked questions over a 10-minute period. Photo courtesy of Ahmad Atallah. Mizzou’s chapter of the Mechanical Contractors Association of America (MCAA) took home third place in the MCAA Student Competition at the MCAA National Convention last week in Phoenix. Each year, the national organization of MCAA presents university…

Introducing Kraken, an Open Source Peer-to-Peer Docker Registry

A Docker registry’s primary purpose is to store and distribute Docker images. This may seem like a relatively trivial task, but with a large-scale compute cluster like Uber’s, it can easily turn into a scaling bottleneck. In computing environments with multiple regions and hybrid cloud systems, image distribution becomes even more challenging. To solve performance issues with our legacy Docker registry stack, Uber’s Cluster Management team developed Kraken, an open source, peer-to-peer (P2P) Docker registry. Docker containers are a foundational…

Architecting a Safe, Scalable, and Server-Driven Platform for Driver Preferences with RIBs

This article is the eighth in a series covering how Uber’s mobile engineering team developed the newest version of our driver app, codenamed Carbon, a core component of our ridesharing business. Among other new features, the app lets our population of over three million driver-partners find fares, get directions, and track their earnings. We began designing the new app in conjunction with feedback from our driver-partners in 2017, and began rolling it out for production in September 2018. Driver-partners in…