AppSignal

Amsterdam, Netherlands
2013
  |  By Camilo Reyes
The AWS Cloud Development Kit (CDK) lets you build serverless applications with the expressive power of a programming language like TypeScript. The CDK defines cloud infrastructure in code and deploys via AWS CloudFormation. In this post, we will build a Lambda function, an AWS Gateway API, and an S3 bucket to upload CSV files. The API will take requests in JSON and seamlessly convert them to CSV format. We will use the AWS CDK in TypeScript to reliably deploy our app through AWS CloudFormation. Ready?
  |  By Thomas Riboulet
One great feature that comes with modern web frameworks is the ability to manage database schema migrations. However, schema migrations are not 100% safe and remain a recurring cause of issues within projects I have encountered over the last 15 years. This article will review the issues surrounding poorly managed schema migrations and then look into Strong Migrations, a gem that can help you avoid most problems. Finally, we will discuss a few good practices around database management. Let's get started!
  |  By Joshua Plicque
In this post, we'll add file upload capabilities to a Phoenix LiveView application and directly upload files to Amazon S3. Without further ado, let's get started!
  |  By Ayush Newatia
In part one of this series, we used Hotwire's Stimulus and Turbo Frames to present modals in Rails. Now, we'll dive into another method we can use to present modals: Turbo Streams.
  |  By Damilola Olatunji
Node.js offers a rich set of performance data through its APIs, similar to how modern web browsers expose performance metrics for webpages. With tools like the Performance Measurement API and the perf_hooks module in Node.js, you can gain insights into your application's performance from the server's perspective, closely aligning with what the end user experiences. In this article, the first of a two-part series about performance hooks, we'll explore how to approach performance optimization in Node.js.
  |  By Aestimo Kirina
When it comes to choosing an object-relational mapping (ORM) library for your Ruby application, Active Record is usually the favorite choice. It's an easy-to-use ORM library that allows for lots of data wrangling without resorting to SQL. All the same, you might wonder: "Is Active Record the only Ruby ORM library I can use?".
  |  By Allan MacGregor
Developers often initially look to the Elixir language and stack because it's known for being able to handle massive amounts of concurrent requests and scale easily. This makes Elixir a great choice for building highly performant applications. However, sometimes operations are computationally expensive and can slow down your application. This is where caching comes in.
  |  By Nik Tomazic
In this post, we will specifically look at using AppSignal to track errors in a Django application. We'll first create a Django project, install AppSignal, introduce some faulty code, and then use the AppSignal Errors dashboard to debug and resolve errors. Let's get started!
  |  By Antonello Zanini
V8 is the most popular JavaScript engine on the planet, supporting technologies such as Chrome and Node.js. The pace of V8's development is impressive, with multiple code commits a day and major releases roughly every month. Keeping up with updates isn't easy, but you've come to the right place! Here, we'll dig into the latest improvements and additions Google has made to the JavaScript engine. Find out what the future of web development looks like!
  |  By Ayush Newatia
Modals are widely used on the web, but they are rarely built with accessibility in mind. When a modal is displayed, the background is dimmed visually but it's still visible to screen readers and keyboard-only users. In this post, the first of a two-part series, we'll look at presenting accessible modals in Rails using two different approaches powered by Hotwire's Turbo and Stimulus libraries. But first, let's see what we need to do to make modals accessible.

Made for teams that want to build high quality Ruby and Elixir applications, AppSignal offers amazing insights into errors and performance issues, plus host monitoring and an easy to use custom metrics platform.

AppSignal supports the Elixir language with an Elixir package. The package supports pure Elixir applications and frameworks including Phoenix, Plug & Erlang.

AppSignal supports the Ruby language with a Ruby gem. The gem supports many frameworks and gems including Capistrano, DataMapper, Delayed Job, Grape, MongoDB, Padrino, Rack, Rake, Resque, Ruby on Rails, Sequel, Shoryuken, Sidekiq, Sinatra & Webmachine.

AppSignal now supports Node.js! The package supports pure JavaScript applications and TypeScript applications, and can auto-instrument various frameworks and packages with optional plugins.

AppSignal also has amazing support for catching errors from Front-end JavaScript applications and sending them to AppSignal, including the React, Vue, Angular, Ember, Preact & Stimulus frameworks.

Packed with features:

  • Alerts in your tools: AppSignal integrates with Slack, Flowdock, HipChat, OpsGenie and more.
  • Control your notifications: AppSignal notifies you exactly when you want to. Get the first exceptions per deploy, all of them of never. Set thresholds for performance notifications.
  • Amazing support: We don't do "first line" and "second line" support: you get to speak with a developer, immediately.
  • Send to issue trackers: A single click creates an issue with all the necessary details in your issue tracker of choice.
  • Manage teams and users: Add users to teams and give them access to specific or all, existing and/or new applications you monitor.
  • Focus on design: Developer tools do not need to be complicated and ugly. Our interface is kept clean and easy to use.

Catch errors, track performance, monitor hosts, detect anomalies — all in one tool.