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Category: Construction Engineering

Data @Scale Boston recap and videos

Recently, we hosted Data @Scale, an invitation-only technical conference for engineers working on large-scale storage systems and analytics. Facebook’s Seth Silverman, engineering manager, and Laney Zamore, software engineer, kicked things off at the State Room in downtown Boston. The event brought together engineering leaders from Akamai, Datadog, DataXu, Facebook, Google, HubSpot, InfluxData, OM1, Starburst, TCB Analytics, and Wayfair to discuss the challenges associated with building and operating data systems that serve millions or even billions of people. More than 300…

The new face of South American people — ScienceDaily

The history of the peopling of the Americas has just been interpreted afresh. The largest and most comprehensive study ever conducted on the basis of fossil DNA extracted from ancient human remains found on the continent has confirmed the existence of a single ancestral population for all Amerindian ethnic groups, past and present. Over 17,000 years ago this original contingent crossed the Bering Strait from Siberia to Alaska and began peopling the New World. Fossil DNA shows an affinity between…

Conquering the First Mile in Transportation Engineering with the driveWay App – Wayfair Tech Blog

When people think of Wayfair, they often think of the slick website, catchy TV ads, and personable customer service. They also obviously think of furniture. What they don’t think about, however, is how that furniture gets to the customer. Many people don’t realize that UPS and FedEx won’t bring a dresser or a dining table to their house. They also don’t realize that Wayfair actually maintains and operates a massive supply chain network of carriers, warehouses, and delivery agents that…

Rebuilding the Groups Experience on LinkedIn

Groups backend As illustrated in the diagram above, the Groups team previously built and maintained its own data stores, services, platforms, and code for all Groups functionality across pillars. Now, by integrating with other platforms on LinkedIn, the team only manages Groups-specific business logic within those platforms. This reduces our operational costs while allowing us to benefit from the evolution of those platforms. Better separation of concernsWith this architecture, we were able to reduce the number of services owned by…

Enabling Modern JavaScript in Rails with Webpack(er)

When I joined Caviar in 2016, I was fully bought into React and all the good stuff around building modular systems. jQuery was no longer the cool kid around the block. NPM was the place to go to get any missing dependencies. ES6 was starting to gain more traction as compilers like Babel helped older browsers support the new syntax. I was thrilled to hear Caviar used React! I could see myself building components with Promises and that cool new…

Electroanatomical mapping with non-thrombogenic, stretchable and active multielectrode arrays (MEAs)

Stretchable OECT array on honeycomb grid substrate. A) The stretchable electrophysiological OECT array on a honeycomb grid parylene substrate. B) Cross-section of the stretchable OECT array. C) A 4 x 4 stretchable OECT array when intrinsically stretched. D) Magnified view of 4 x 4 stretchable OECT array when stretched. Credit: Science Advances, doi: 10.1126/sciadv.aau2426 To evaluate in vivo physiological functions, electrophysiological signals must be monitored with high precision and high spatial or temporal resolution. Ultraflexible, multielectrode arrays (MEAs) were recently…

Crash reporting in desktop Python applications

One of the greatest challenges associated with maintaining a complex desktop application like Dropbox is that with hundreds of millions of installs, even the smallest bugs can end up affecting a very large number of users. Bugs inevitably will strike, and while most of them allow the application to recover, some cause the application to terminate. These terminations, or “crashes,” are highly disruptive events: when Dropbox stops, synchronization stops. To ensure uninterrupted sync for our users we automatically detect and…

Scaling Time Series Data Storage — Part II – Netflix TechBlog – Medium

In January 2016 Netflix expanded worldwide, opening service to 130 additional countries and supporting 20 total languages. Later in 2016 the TV experience evolved to include video previews during the browsing experience. More members, more languages, and more video playbacks stretched the times series data storage architecture from part 1 close to its breaking point. In part 2 here, we will explore the limitations of that architecture and describe how we’re re-architecting for this next phase in our evolution. Breaking…

GraphQL Server Design @ Medium – Medium Engineering

A while ago, we told the story of how we are migrating to React.js and a service oriented architecture with the help of GraphQL. Now, we want to tell the story of how the structure of our GraphQL server helped make our migration much smoother. We had three things in mind when we began designing our GraphQL server: It should be easy to alter the shape of the dataWe currently use protocol buffers as a schema for data that comes…

Scaling Machine Learning at Uber with Michelangelo

By Jeremy Hermann & Mike Del Balso In September 2017, we published an article introducing Michelangelo, Uber’s Machine Learning Platform, to the broader technical community. At that point, we had over a year of production experience under our belts with the first version of the platform, and were working with a number of our teams to build, deploy, and operate their machine learning (ML) systems. As our platform matures and Uber’s services grow, we’ve seen an explosion of ML deployments…