We're excited to announce that AppSignal now offers improved monitoring for long-running streaming Rack responses. Our improved Rack response monitoring means you can gain deeper visibility into the health of your Ruby application's long-running responses, allowing you to catch errors that may arise minutes or even hours after a request's body is served. This new layer of observability results from a valuable contribution from Julik Tarkhanov, Director of Engineering at Cheddar Payments.

One Ruby feature that embodies the principle of “optimizing for programmer happiness” is how the language uses garbage collection (GC) to automatically manage application memory. But as Ruby apps grow, GC itself can become a big consumer of system resources, and this can lead to high CPU usage and performance issues such as increased latency or reduced throughput.

Developed in the mid-1990s, Ruby is a dynamic, open-source programming language. The tool has grown in popularity from its initial release, having been used in modern systems covering a variety of corporate and academic use cases. Ruby gained further traction after the release of Ruby on Rails, a powerful web application framework written in pure Ruby.

We've released version 4.0 of the AppSignal gem, which offers significant changes and improvements to our Ruby integration. In this blog post, we'll cover the core updates and explain the steps you need to take before you upgrade.

Most of the time, the default application monitoring metrics, graphs, and visualizations provided by AppSignal will do for your Ruby app. However, you might be the kind of user who likes a bit of control over what is measured, how it’s displayed, and how critical information about your app should be relayed. AppSignal allows you to customize app metrics and dashboards as you wish. In this guide, we’ll learn all about AppSignal's custom metrics, including: And more!

In the first part of this article series, we deployed a simple Ruby on Rails application to DigitalOcean's app platform. We also hooked up a Rails app to AppSignal, seeing how simple errors are tracked and displayed in AppSignal's Errors dashboard. In this part of the series, we'll dive into how to set up the following for your Ruby on Rails application using AppSignal: Let's get into it!

Exceptions are a commonly used feature in the Ruby programming language. The Ruby standard library defines about 30 different subclasses of exceptions, some of which have their own subclasses. The exception mechanism in Ruby is very powerful but often misused. This article will discuss the use of exceptions and show some examples of how to deal with them.

Additionally, We didn’t need to make any changes to our infrastructure, except for adding the certificate and keys to the entities originating the requests from our private subnets. See below for troubleshooting techniques which can be useful when setting up mTLS..

OpenTelemetry is enabling a revolution in how Observability data is collected and transmitted. See our What Is OpenTelemetry post on why this is an important inflection point in the Observability space. In this post, we’ll walk through how to configure the OpenTelemetry Gems within a Rails app.