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Author: engineering

The Role of Background Image in Web Design – Are You Selecting the Right Backdrop?

A good web design is essential for a business website. Creating an engaging business website can exponentially increase the profits of a business owner. Many design elements and tools are available for business owners to choose from when they want to create their website. One of the newest trends that are becoming popular worldwide amongst business owners is in the use of a picture or a photo as the main background image for the website. It’s difficult to beat a…

Researchers 3-D print lifelike artificial organ models

Researchers can attach sensors to the organ models to give surgeons real-time feedback on how much force they can use during surgery without damaging the tissue. Credit: McAlpine Research Group A team of researchers led by the University of Minnesota has 3D printed lifelike artificial organ models that mimic the exact anatomical structure, mechanical properties, and look and feel of real organs. These patient-specific organ models, which include integrated soft sensors, can be used for practice surgeries to improve surgical…

Screaming Circuits: Electronics Manufacturing Files

Manufacturing is all about taking data from you and delivering some good working circuit boards. Well, it can be just data – as in full turn-key, or data plus some parts and or PC boards, as in a partial turn-key or a kitted job. Regardless of whether you’re sending parts and boards, or having us buy everything, we need good data, and a lot of it. That data is the difference between the working boards you want and need and…

Scaling Slack’s Job Queue – Several People Are Coding

Robustly Handling Billions of Tasks in Milliseconds Using Kafka and Redis by Saroj Yadav, Matthew Smillie, Mike Demmer, and Tyler Johnson. Slack uses a job queue system for business logic that is too time-consuming to run in the context of a web request. This system is a critical component of our architecture, used for every Slack message post, push notification, URL unfurl, calendar reminder, and billing calculation. On our busiest days, the system processes over 1.4 billion jobs at a peak…

Marshmallow-like silicone gels used as insulation in containers for cryopreserved embryos — ScienceDaily

As the genetic modification of mice is increasingly used in medical and biological research, so too is the need for an efficient way to transport cryopreserved embryos and sperm. For the preservation of the frozen embryos/sperm, liquid nitrogen is used to keep the temperatures in the transport containers below minus 150 °C. These containers, which are like a dry sipper with liquid nitrogen absorbers embedded inside, are heavy and often expensive, especially when used for short distance transportation. In this…

Make SSL boring again

It may (or may not!) come as surprise, but a few months ago we migrated Cloudflare’s edge SSL connection termination stack to use BoringSSL: Google’s crypto and SSL implementation that started as a fork of OpenSSL. We dedicated several months of work to make this happen without negative impact on customer traffic. We had a few bumps along the way, and had to overcome some challenges, but we ended up in a better place than we were in a few…

Starting FARGATE – Medium Engineering

For the past year at Medium we’ve been using ECS to deploy containers to AWS. When Amazon announced FARGATE earlier this week, we were really excited. It promises to solve a bunch of issues we experience with the current stack. This is the story of getting a FARGATE service up and running using our internal deployment system, BBFD. BBFD is an internal CLI and continuous deployment tool that we use to build, package, test and deploy our Docker services. Hopefully…

Introducing the Pinterest chat extension and bot for Messenger

Hayder Casey, Pinterest engineering manager, Growth More than 200 million people use Pinterest every month to find ideas to try, from recipes to gifts to decor for the home. Family and friends are often a big part of these plans, and that’s why nearly 1M Pins are shared to Facebook Messenger each week. Today we’re making it easier for Pinners to collaborate with others on Messenger by launching a new chat extension and bot. Pinterest chat extension for Messenger We’re…

In first, 3-D printed objects connect to WiFi without electronics

UW engineers have developed the first 3-D printed plastic objects that can connect to other devices via WiFi without using any electronics. The 3-D printed attachment above can sense how much laundry soap is being used — and automatically order more when the bottle is running low. Credit: Mark Stone/University of Washington Imagine a bottle of laundry detergent that can sense when you’re running low on soap—and automatically connect to the internet to place an order for more. University of…

OAuth with PHP Part Two: refreshing & revoking tokens

This is a follow up to part 1 that talks about creating access tokens from authorization codes. At the end of the first part of our PHP journey with OAuth, we had two scripts: an index.php that would begin the OAuth process and a callback.php that would accept the result from Square and use the provided authorization code to create an access token that your application can use to use Square’s APIs on a merchant’s behalf. Your newly minted access…