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Engineering News

Let’s Encrypt & App Engine, pt. 2 – Square Corner Blog – Medium

The easier way to renew Let’s Encrypt certificates on an app engine site For more background on using Let’s Encrypt with Google’s App Engine, read the original post Setting up https for your website When it came time to renew my Let’s Encrypt certificates for Google’s App Engine, I wanted to see whether I could improve the process. For my first attempt, I tried out the DNS verification method. I updated the appropriate TXT records for my domain, but either wasn’t…

Analyzing distributed trace data – Pinterest Engineering – Medium

Brittany Herr | Pinterest engineering intern Naoman Abbas | Pinterest engineer, Visibility Earlier this year we open sourced Pintrace, a distributed tracing pipeline. A trace follows a request as it moves through a backend, tracking where and how it spends its time. Traces are made up of spans, each of which represents an operation. At Pinterest, there are tens of services and hundreds of network calls per-trace. The information from distributed tracing provides deep visibility into what goes on in our…

Snapchat users motivation, level of interest — ScienceDaily

The simplicity of the platform and brevity of posts are key factors in determining how students can become addicted. In a world where people struggle with a seemingly diminishing attention span, Snapchat could be the best form of communication. Posts last just 10 seconds. That’s it. No deep thoughts or analytical narrative to the posts. Quick, simple and move on to the next topic. But a study by Texas Tech University associate professor Narissra Punyanunt-Carter, graduate student J.J. Delacruz and…

Handling System Failures during Payment Communication

Handling system failures during payment processing requires real-time identification of the issues in addition to offline detection, with the goal of eventual consistency. No matter what goes wrong, our top priority is to make sure that customers receive service for which they’ve been charged, and aren’t charged for service they haven’t received. Accurate payment processing is a crucial element in being worthy of trust, a core Dropbox company value. In a standard system of this kind, failures might result in…

Why We Built Cloudflare Workers

It all comes down to the speed of light. It always does. The speed of light limits the latency possible between someone using the Internet and the application they are accessing. It doesn’t matter if they are walking down the street hailing a car using a ride-sharing app, sitting in an office accessing a SaaS application on the web, or if their wearable device is reporting health information over WiFi. The speed of light is everywhere. When you can’t fight…

Run JavaScript Service Workers at the Edge

TL;DR: You’ll soon be able to deploy JavaScript to Cloudflare’s edge, written against an API similar to Service Workers. Try writing a Worker in the playground » Introduction Every technology, when sufficiently complicated, becomes programmable. You see this everywhere, but as a lifelong gamer, my personal favorite example is probably graphics cards. In the ’90s, graphics hardware generally provided a fixed set of functionality. The OpenGL standard specified that the geometry pipeline would project points from 3D space onto your…

Lighting a path to smarter homes, roads and bridges

If you’re worried about carbon monoxide poisoning, you might purchase a detector for your home. But what if your house itself could sense carbon monoxide and other potentially harmful gases – nitrogen oxides, natural gas, formaldehyde – without the need for a separate device for each chemical? And what if all these sensors spoke to each other through a single interface, a sort of super-thermostat? This vision could be realized one day using sensor technology currently being developed at…

Researchers develop smart tattoos for health monitoring

Smart tattoo ink changes color to monitor dehydration and blood sugar. Credit: HMS Harvard and MIT researchers have developed smart tattoo ink capable of monitoring health by changing color to tell an athlete if she is dehydrated or a diabetic if his blood sugar rises. The work, conducted by two postdoctoral fellows at Harvard Medical School and colleagues led by Katia Vega at MIT’s Media Lab, paired biosensitive inks developed at Harvard with traditional tattoo artistry as a way to…

Developing sensors to defend aircraft against lasers

The LASSOS display screen highlights the laser strike event in live sensor imagery on the left and generates a 3D model of the laser streak in Google Earth (right). Credit: Massachusetts Institute of Technology Laser strikes, the aiming of high-power laser pointers at aircraft, are a growing safety concern for pilots and aircraft passengers. They pose numerous dangers to pilots, including distraction during crucial moments in flight, temporary flash blindness, and in rare cases, permanent eye damage. Laser strikes have…

Writing a Resume Summary for Tech Jobs

Generally speaking, the resume professional summary should identify the key strengths for the position you are applying for. This is essential to customize your resume, particularly professional summary, according to the requirements of the job. Candidates who tailor their expertise to the needs of their prospective employer have a better chance to be hired. Including a summary helps to make the resume screening, interview and selection stages more efficient to the recruiter. By through reading the requirements for the job…