Even the most complicated technologies should be user-friendly.

We recently implemented a Spark streaming application, which consumes data from from multiple Kafka topics. The data consumed from Kafka comprises different types of telemetry events generated by mobile devices. We decided to host the Spark cluster using the Amazon EMR service, which manages a fleet of EC2 instances to run our data-processing pipelines.

We’re in OSMC mode in October which typically means that expectations are high, time is limited and everyone is busy preparing talks, demos, implementing new features … but also fixing things. Icinga 2.10 brings support for namespaces, improved TLS connection performance and much more. Community members tackled some bugs already, 2.10.1 is released and 2.10.2 is waiting for test feedback from the snapshot packages.

It’s been a while since the last Vagrant box update and release, so here are the highlights of the past months combined into a new shiny 2.0 release :)

While the term ‘Java troubleshooting’ can apply to many, many scenarios, this post focuses on three particular long-standing Java production scenarios: a denial of service to a Java service endpoint, a memory leak, and troubleshooting a thread deadlock or race condition. Follow along as we use Java inside Docker containers to facilitate quick testing and show you how to use open source sysdig to quickly diagnose each troubleshooting scenario.

You've got this month’s salary, and now it is time for shopping! You’re surfing in the Amazon, here are the earphones that you wanted to buy for a long time. You added it to cart. What a coincidence! There is a discount option with a coupon for this product. This must have made you happy as everyone loves discounts!

Amazon Elastic Beanstalk allows you to quickly provision the infrastructure needed for an entire application without the hassle of managing the configuration of EC2 instances, Elastic Load Balancers, Auto Scaling, and many other AWS services. Elastic Beanstalk also automatically monitors these resources and provides a simplified view into your application’s health.

In A Comedy of Errors, we talk to engineers about the weirdest, worst, and most interesting application and infrastructure issues they’ve encountered (and resolved) over the years. This week, we hear about Py from Derek Lo, Founder and CEO, and Brian Sweatt, Lead Full-Stack Engineer. Py empowers hiring teams with a suite of products to evaluate technical candidates.

Knowing what is going on with your web assets 24/7 is key to delivering a performant site with high availability. That is why Uptrends gives you so many options for getting the information out to the right people when they need it.

The health of a domain reflects current server status and other details like email servers and DNS records. Today, we’ll do a deep dive into the Domain Health Check and point out potential uses.