For quick, scalable, highly-available web services, few options compare to AWS Lambda. Just provide your code, add a little configuration, and you're done! In this article, Milap Neupane will introduce us to Lambda, show us how to get it working with Ruby and the Serverless Framework, and discuss reasons to use — or to not use! — Lambda in production.

Learning a new language is always a joyous event. From the first innocent google search, through the first “hello world”, to always being surprised when the classic text is somehow printed to the screen/command line console/browser tab/local text file. The entire time your mind is quickly soaking in new ideas and concepts, new syntax and phrases, and new ways of doing things. Some of them can be compared to the languages you already know. Others are brand new.

Even the most prominent and reliable frameworks are notorious for burning out resources if not configured perfectly. In this post, we are about to take a look at how Ruby, one of the most prominent programming languages and an awesome web application alternative when combined with Rails, manages memory, and how you can make it perform even better. Ruby is a scripting language built for use in web applications and similar stuff.

For many developers, Ruby on Rails framework not only allows them to build web applications, websites, and efficient database solutions, but it can help them optimize mailing operations. You can easily use Ruby on Rails mailer, an automatic tool to build transactional messages of any kind, and make proper authentication. In this article, we review three main ways to work with email sending in RoR, which include some Ruby gems, the Net::SMTP class, and the facilities of the Socket system.

Few things are more frustrating than slow, flaky test suites. You're ready to deploy, wait 20 minutes for CI to run, only to find that a test failure in code you've never touched is blocking you. You dig into the source and find the problem: an external API call. It works (slowly) most of the time. But sometimes the network glitches and it fails. What do you do? In this article, José Manuel shows us several techniques for removing external API dependencies from our tests.

Text encoding is fundamental to programming. Web sites, user data, and even the code we write are all text. When encoding breaks, it can feel like the floor is falling out from under you. You're cast into a dimension of bitmasks and codepoints. Logs and backtraces are useless. You consider trading your text editor for a hex editor. But there's hope! In this article, Jose Manuél will show us how encoding errors happen, how they're expressed in Ruby, and how to troubleshoot them.

Ruby may be over 25 years old, but it remains popular in the software community for its focus on programmer happiness. Building software with Ruby often involves leveraging one or more popular frameworks for the purpose of increasing productivity by relying on existing solutions to common problems. Ruby frameworks generally fall into two categories: web-facing frameworks and background job frameworks.

Running software uses computer memory for data structures and executable operations. How this memory is accessed and managed depends on the operating system and the programming language. Many modern programming languages manage memory for you, and Ruby is no different. Ruby manages memory usage using a garbage collector (also called gc). In this post, we’ll examine what you, a Ruby developer, need to know about Ruby’s gc. Use the links below to skip ahead in the tutorial.

These days fewer and fewer web developers get to specialize in a single language like Ruby. We use different tools for different jobs. In this article, Ayooluwa Isaiah argues that Go is the perfect complement to Ruby. The developer who knows both is in a great position to handle almost any back-end challenge.

Lambdas are a powerful feature of the Ruby language. They allow you to wrap logic and data into a portable package. In this post, we’ll cover how and when to use lambdas. You'll also learn about the difference between lambdas and Procs, and the performance profile of lambda functions. The code examples have been tested with 2.6 and 2.7 and should work with most modern Rubys.