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Elixir enables companies to rapidly get a product to market with confidence that it can scale and handle considerable spikes in concurrent users. By Erlang Solutions.

I think what’s impressed us is just the ease of clustering of BEAM nodes. Many of you are working with Elixir or have been working with Elixir for, I don’t know how many years already. This is probably old news.

The story of Turn.io’s COVID-19 helpline is a great example of this. Built in just 5 days, it scaled to 450,000 users before any public launch, and has grown to serve over 7.5 million people in South Africa. Learn more in our blog recap of Simon de Haan’s talk at ElixirConf EU Virtual.

The article walks you over:

• Introduction
• Turn.io and apps healthcare apps
• Launching COVID Connect in South Africa
• An Elixir based app to support Mental Health
• The stack

Authors come from a Python background and so turn.io was their team’s first production of Elixir environment. Some of these things that were, really hard problems in Python just don’t exist in Elixir. So simple things like publishing WebSockets via GraphQL subscriptions from any BEAM node are just so easy. It just feels almost unfair if you’re coming from an environment that doesn’t have that clustering idea built in. Excellent read!

By understanding and using JVM and JVM parameters, both developers and end users can diagnose failures and improve the performance of a Java application. By Jayashree Huttanagoudar @redhat.

When you write source code, you’re writing code for humans to read. Computers can’t execute source code until the code is compiled into machine language, a generic term referring to any number of languages required by a specific machine. Normally, if you compile code on Linux, it runs on Linux, and if you compile code on Windows, it runs on Windows, and so on. However, Java is different. It doesn’t target an actual machine. It targets something called the Java Virtual Machine (JVM), and so it can run on any machine.

Tuning a JVM is the process of adjusting JVM parameters to improve the performance of the Java application. It also helps to diagnose application failure.

The article focuses mainly on:

• What’s the difference between a JVM, JDK, and JRE?
• What is JVM tuning?
• Types of JVM Parameters
  • Standard options
  • Non-standard options
  • Advanced options

By understanding and using JVM and JVM parameters, both developers and end users can diagnose failures and improve the performance of a Java application. The next time you’re working with Java, take a moment to look at the options available to you.

The artcicle discusses the password verification-required policy introduced in MySQL 8.0.13. With this feature, it is possible to require that attempts to change an account password be verified by specifying the existing current password to be replaced. By Brian Sumpter.

The password verification-required policy enables DBAs to prevent users from changing a password without proving that they know the current password. When would this happen? Such changes could occur if a user walked away from a terminal session without logging out, and a malicious user uses the open session to change the original user’s MySQL password. As you can imagine, this could have disastrous consequences.

The article then focuses on:

• Per-user settings
• Global settings
• Exceptions

Password-verification policy can be established globally, and individual user accounts can be set to either defer to the global policy or override the global policy with specific per-account behavior. MySQL 8 has made great strides in bolstering user administration and user security. While we often take for granted something as simple as requiring the current password before a password change, using this option in concert with other MySQL 8 security features builds a secure and easily administered database environment that hasn’t been possible historically without relying on additional plugins or custom solutions. Good read!

Ubuntu goes bleeding edge with Rolling Rhino. Here’s everything you need to know about it. New Ubuntu releases come out every six months, with most of the software frozen in time until the next release. To receive the latest updates as soon as they’re available, many people turn to a rolling release distribution, such as Arch Linux. By Bertel King.

Ubuntu Rolling Rhino is a version of Ubuntu that follows the rolling release model. It began as a tool from Martin Wimpress, who at the time served as head of the Ubuntu desktop team at Canonical. To get technical, Rolling Rhino follows the development branch of Ubuntu. By default, whenever a new version of Ubuntu lands, you can choose to switch to the development branch of the next version currently in development.

The article then explains the following:

• What is Ubuntu Rolling Rhino?
• How to download Ubuntu Rolling Rhino
• How to download updates
• Keeping Ubuntu rolling along

For many people who grow frustrated with outdated software on Ubuntu, switching distros entirely is no longer the only option. You can get your hands on a rolling release distro and enjoy the latest software while sticking with familiar tools like APT and a desktop interface that many have grown to love. Easy read!

Global study finds 94% of people believe society has not made enough progress on sustainability and social efforts. People around the world are demanding more progress on sustainability and social efforts and are looking to businesses to step up, according to a new study by Oracle and Pamela Rucker, CIO Advisor, Instructor for Harvard Professional Development. By @Oracle.

The “No Planet B” study surveyed more than 11,000 consumers and business leaders across 15 countries and found that people are fed up with the lack of progress society is making towards sustainability and social initiatives, want businesses to turn talk into action, and believe technology can help businesses succeed where people have failed.

The study main points:

• People want businesses to step up sustainability and social efforts
• Human bias and operational challenges are holding businesses back
• People will cut ties with businesses that don’t take action on sustainability and social initiatives

Research findings are based on a survey conducted by Savanta, Inc. between February 25 – March 14, 2022 with 11,005 global respondents from 15 countries (United States, United Kingdom, Germany, Netherlands, France, China, India, Australia, Japan, Singapore, South Africa, United Arab Emirates, Saudi Arabia, Brazil, and Mexico). The survey explored attitudes and behaviors of consumers and business leaders towards sustainability and social efforts along with the role and expectations of artificial intelligence (AI) and robots in environmental, societal and governance (ESG) efforts. Follow this link to full research (pdf). Good read!

When building third-party APIs, it’s important to test your code in every runtime scenario you’ve seen or can foresee. For this, a robust and easy to use & maintain testing framework is a must. By Peter Villani.

Given the number of tests we perform, and trying to cover every function in our codebase, we needed to simplify the testing code and make it easier to maintain, understand, and debug. We also wanted to make sure our testing framework would require little effort to integrate into Laravel.

As PHP developers, we relied heavily on PHPUnit, but we switched over to the Pest Testing Framework, which simplified and reduced our large library of testing code. In this article, we take a look at Pest, a robust testing framework built on top of PHP’s standard testing library PHPUnit.

it('is an example, function () {
    assertTrue(true);
});

Pest removes the namespace and library references needed in PHPUnit, and it doesn’t require extending hundreds of functions. It simply needs you to specify the test function - making it far easier to maintain and debug. And also Pest gave us more information per test and for errors, Pest gives you direct access to the line of code that has failed. Good read!

How do you start a new project? ng new app and that’s it! Not anymore. If you want to make maintenance and development easier you should be sure to follow these steps. By coding_indian.

The article then describes the following steps:

• Create the project
• Install Husky for configuring our git hooks
• Configure pre-push hook
• Add ESLint to the project
• Add lint-staged
• Add Prettier
• Add Storybook
• Add a local server
• Configure CI/CD pipelines and git checks
• VSCode extensions

… and much more! And there are code and configuration examples as well in the article for smooth project setup. Nice one!

GraalVM has caused a revolution in Java development since it launched three years ago. One of the most discussed features of GraalVM is Native Image, which is based on an ahead-of-time (AOT) compilation. By Alina Yurenko and Karsten Silz.

Source: https://www.infoq.com/articles/native-java-graalvm

Java dominates enterprise applications. But in the cloud, Java is more expensive than some competitors. Native compilation makes Java in the cloud cheaper: It creates applications that start much faster and use less memory.

The article then walks you over:

• Traditional execution of Java applications
• GraalVM for the Win
• How native image works
• Taking Java startup performance to the next level
• Peak performance on par with JVM

… and much more. We liked the comparison of startup time effect of native image modes and JIT.

A native executable requires neither the JVM and its JIT compilation infrastructure nor memory for compiled code, profile data, and bytecode caches. All it needs is memory for the executable and the application data. Typical savings looks like 200 MB in JIT mode vs. 40 MB for the native executable. Good read!

If you haven’t tried it yet, Google Cloud Skills Boost provides hands-on educational experiences so you can learn what you need to know about operating in the cloud. Labs from Google Cloud Skills Boost give users more than just a sandbox environment. By Brian Farnham.

Users get to pick experiences ranging from short, 30-minute labs all the way up to multi-day quests to help them tailor learning to their specific needs. Now, the “Getting Started with Splunk Cloud Getting Data In (GDI) on Google Cloud” hands-on-lab is available to take you through core scenarios for data ingestion and data input in Google Cloud, enabling you to get practical, hands-on experience for all scenarios in just 90 minutes or less.

The lab also guides you through managing the following Google Cloud resources:

• Log Sinks
• Cloud Storage buckets
• Pub/Sub topics and subscriptions
• Dataflow pipelines

This hands-on-lab provides a full-stack practice experience with Splunk on Google Cloud as part of data ingestion and processing. If you’re interested in getting started, please follow this guide: Getting Started with Splunk Cloud GDI on Google Cloud. Excellent read!

2021 was a pivotal year for the future of work, forcing businesses to not just evolve their digital transformation strategies, but to rethink them altogether. It’s not just that more people are working from home. They’re doing so in a rapidly changing IT environment in which trends like edge computing, automation and huge data pipelines have ushered in continuous change. By Ram Chakravarti.

According to the latest analysis by Gartner, from January 2022, worldwide IT spending is expected to hit $4.5 trillion in 2022. What are some of the biggest trends we can expect to see this year for the future of work technology? Author will dive into three major areas where we can expect to see major growth:

• Even more data
• Increased reliance on automation
• Increased investment in security as hybrid work becomes a mainstay

Hybrid work has forced significant changes in network IT architecture. The idea of the traditional perimeter, already on shaky ground through the adoption of hybrid cloud networks, has been completely obliterated by hybrid work. Good read!