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Category: Electronics Engineering

Welcome to Birthday Week 2019

September has always been a special month for Cloudflare. Nine years ago — on September 27th — we launched Cloudflare. And, each year since, we’ve celebrated our birthday with a week full of new products and innovations that support our mission of helping to build a better Internet. Our mission guides everything we do. One of the most intentional words in our mission is ‘helping’. Building an Internet that can meet the world’s needs cannot be done by any one…

Daily rainfall over Sumatra linked to larger atmospheric phenomenon — ScienceDaily

Around the globe, communities are concerned with rain and storms. An area known as the “Maritime Continent,” which includes major islands such as Sumatra, Java, Borneo, Papua New Guinea, along with a galaxy of smaller islands, experiences significant rainfall including periodic monsoonal rain, and flash flooding. In a new study led by atmospheric scientist Giuseppe Torri at the University of Hawai’i (UH) at M?noa School of Ocean and Earth Science and Technology (SOEST), researchers revealed details of the connection between…

New vaccine prevents herpes in mice, guinea pigs — ScienceDaily

Researchers from the Perelman School of Medicine at the University of Pennsylvania have developed a vaccine to protect against genital herpes. Tested on both mice and guinea pigs, the immunization led to “mostly sterilizing immunity” from the virus — the strongest type of immunity. The results of the study are published today in Science Immunology. In the study, researchers delivered the Penn-developed vaccine to 64 mice and then exposed them to genital herpes. After 28 days, 63 of the mice…

When TCP sockets refuse to die

While working on our Spectrum server, we noticed something weird: the TCP sockets which we thought should have been closed were lingering around. We realized we don’t really understand when TCP sockets are supposed to time out! Image by Sergiodc2 CC BY SA 3.0 In our code, we wanted to make sure we don’t hold connections to dead hosts. In our early code we naively thought enabling TCP keepalives would be enough… but it isn’t. It turns out a fairly…

Novel biometric tool, EarEcho, uses sound waves to identify the ear canal’s unique geometry — ScienceDaily

Visit a public space. Chances are you’ll see people wearing earbuds or earphones. The pervasiveness of this old-meets-new technology, especially on college campuses, intrigued University at Buffalo computer scientist Zhanpeng Jin. “We have so many students walking around with speakers in their ears. It led me to wonder what else we could do with them,” says Jin, PhD, associate professor in the Department of Computer Science and Engineering in the UB School of Engineering and Applied Sciences. That curiosity has…

Gaining Confidence and Improving Android Developer Workflows as a Software Engineering Intern at Uber

Ankit Agrawal was a Summer 2019 intern on Uber’s Developer Experience team, focused on building developer tools for Android Java engineers. In this article, he offers a bird’s eye view of his internship experience at Uber. February 12, 2019 was a day of many emotions. I was ecstatic to learn that I would begin an engineering internship at Uber in less than four months, and exhilarated at the thought of working alongside seasoned developers. However, I also experienced fear and…

Enhancing Bandaid load balancing at Dropbox by leveraging real-time backend server load information

Layer-7 load balancing (LB) is a core building block to scale today’s web services. In an earlier post, we introduced Bandaid, the service proxy we built in house at Dropbox that load balances the vast majority of our user requests to backend services. More balanced load distribution among backend servers is desirable because it improves the performance and reliability of our services which benefits our users. Our Traffic/Runtime team recently explored leveraging real-time load information from backend servers to make…

@Scale 2019 registration is now open!

Registration is officially open for @Scale 2019. @Scale is an invitation-only technical conference for engineers who build or maintain large-scale systems. This year’s event will be held at the San Jose Convention Center on October 16.  This year, speakers from Confluent, Google, Lyft, Microsoft, and NVIDIA will discuss how they’ve addressed some of the challenges that come with building and maintaining systems for scale. Attendees can participate in four different tracks: AI, Data Infra, Privacy, and Security. The scale system…

Science at Uber: Improving Transportation with Artificial Intelligence

At Uber, we take advanced research work and use it to solve real world problems. In our  Science at Uber video series, Uber employees talk about how we apply data science, artificial intelligence, machine learning, and other innovative technologies in our daily work. Zoubin Ghahramani, Chief Scientist at Uber, spent many years in academia researching artificial intelligence. In very recent years, he has seen this field move from the theoretical into the practical, finding real-world applications in a variety of…

How We Design Features for Wrangler, the Cloudflare Workers CLI

The most recent update to Wrangler, version 1.3.1, introduces important new features for developers building Cloudflare Workers — from built-in deployment environments to first class support for Workers KV. Wrangler is Cloudflare’s first officially supported CLI. Branching into this field of software has been a novel experience for us engineers and product folks on the Cloudflare Workers team. As part of the 1.3.1 release, the folks on the Workers Developer Experience team dove into the thought process that goes into…