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Engineering News

The TCP Tortoise: Optimizations for Emerging Markets

Serving fast pages is a core aspiration at LinkedIn. As part of this initiative, we continuously experiment and study the various layers of our stack and identify optimizations to ensure that we use the most optimal protocols and configurations at every layer. As LinkedIn migrated to serving its pages on HTTP/2 earlier this year, it became imperative that we identify and use the most optimal transport layer strategy for our users’ network. Being a Transmission Control Protocol-centric (TCP) infrastructure, we…

Building More Reliable Apps with Uber Engineering’s Startup Reason Reporter

With the November 2016 rewrite of the Uber rider app, we made significant inroads towards reducing our measured crash rate and improving the uptime of our core features. However, one nagging problem was app terminations caused by out of memory (OOM) exceptions or other reasons that are hard to detect. Anecdotally, we received reports of the app failing to launch in low-memory situations, particularly on older devices, but had little in the way of tooling to track down these issues.…

Night vision for bird- and bat-friendly offshore wind power

Pacific Northwest National Laboratory’s ThermalTracker software analyzes thermal video to help birds and bats near offshore wind farms. Three birds are seen flying offshore in this screenshot of the thermal video that PNNL’s software analyzes. Credit: Pacific Northwest National Laboratory The same technology that enables soldiers to see in the dark can also help protect birds and bats near offshore wind turbines. Night vision goggles use thermal imaging, which captures infrared light that’s invisible to the human eye. Now, researchers…

Stick-on patch collects, analyzes and wirelessly transmits a variety of health metrics

A research team led by Professor Kyung-In Jang of Robotics Engineering collects, analyzes and diagnoses bio-signals wirelessly transmitted to mobile application from the soft electronic skin. Credit: DGIST A new, electronic skin microsystem tracks heart rate, respiration, muscle movement and other health data, and wirelessly transmits it to a smartphone. The electronic skin offers several improvements over existing trackers, including greater flexibility, smaller size, and the ability to stick the self-adhesive patch—which is a very soft silicone about four centimeters…

5 Ways To Generate Passive Income Without Disturbing Your Current Job!

An incredible way to make your life easier is finding ways to make some extra bucks without fiddling your current work. When you don’t have to invest in it, it makes your life even easier. While the whole idea seems persuasive, I just want to put in before you read the whole article that you need to own a couple of items in order to generate income from the following ways. 1. Click photos and sell them! Many of us…

Why Your Employees Should Have An Email Signature

Whether you are a small business or a large corporation, your email signature is an important part of your corporate identity, and as such should be consistent throughout your organization, no matter what the size. If you are currently in the process of researching email signatures to design your own, you can always get plenty of excellent design tips online. Below are some of the reasons that all employees should have an email signature, and why you need to have…

Portable nanospectrometer for detecting dangerous compounds

Credit: University of North Texas Guido Verbeck, UNT associate professor of chemistry and biochemistry, patented an algorithm that works with a high-tech tool to detect the location of chemical streams. Now, he’s using it in technology that can detect not only chemicals, but biological threats. His newest device, a mobile nano spectrometer, can be used in a moving vehicle to investigate attempts at creating biological warfare, examine environmental concerns, find clandestine laboratory locations, protect military bases and determine the toxicity…

Hey do you have the time? – Wealthfront Engineering Blog

What it means to set your clock over cross-country latencies Have you ever wondered what process allows your phone to get the time after it has been dead for hours, or keeps all your devices reporting consistent times across versions and operating systems? The answer is a commonly used but often ignored protocol called Network Time Protocol (NTP), which was developed to allow consistent timekeeping between network-connected computers. This protocol has grown up with the internet: the first Request for…

Moving Forward with Path Forward

In February, I blogged about our first rotation of Path Forward returnships and the awesome people we’ve hired as a result of the program. As a refresher, Path Forward is a nonprofit organization that aims to empower people who’ve taken time away from their careers to focus on caregiving to return to the workforce. Cloudflare started partnering with Path Forward this past year as a way to expand our talent pool to include the best and the brightest, regardless of…

BlueSteel | IMVU Engineering Blog

While writing the source code of a 3D engine, we can have many types  problems of code that will not compile, to harder problems like memory leaks. At IMVU, we have automated solutions in place to help find these  of problems. For example, unit testing combined with Valgrind has helped us track down a lot of memory leak problems.  performance problems? A single code commit can subtly affect the speed and performance of the 3D engine in ways that are not obvious to the engineer. We…