AppSignal
https://appsignal.com
Amsterdam, Netherlands
2013
appsignal
Monitoring Django Query Performance with AppSignal
  |  By Dejan Lukić
Slow database queries are really a pain. It’s easy to blame Django for taking ages to process a request, but the real issue may lie in an SQL query not doing what it should be. These performance degrading queries are often hiding in plain sight. By the time you notice them, they are already affecting your end users. AppSignal is an application performance monitoring (APM) tool with support for Python and Django out of the box.
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Signal Forms in Angular: The Missing Link in Modern Reactivity
  |  By Sonu Kapoor
For years, Angular lived with a subtle contradiction. The framework steadily modernized its reactivity model with signals, fine-grained change detection, and a clearer mental model for component state. Yet forms - arguably one of the most important parts of most applications - continued operating under an older, push-based system built around events and subscriptions. Developers felt this split immediately.
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Tracking Celery Task Failures in Python
  |  By Nehemiah Bosire
Whenever you place an order on Amazon (or any other e-commerce site for that matter), you get that “order placed successfully” notification almost instantly. But did you know that there’s much more to the whole experience than meets the eye? In Python applications, Celery is the major driver behind the whole thing. The tasks that take time are queued and sent to brokers.
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Monitoring Express Route Performance with AppSignal
  |  By Dimitrije Stamenić
Slow Express routes rarely look broken in logs. They just feel sluggish to users. With AppSignal, though, you can quickly identify which endpoints are the slowest, gain insight into each request, and find out if the latency is related to any errors or slow queries. In this guide, you'll set up a mock Express application, create a load, and use AppSignal to analyze a route's performance as if you were working through a live incident.
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Debugging Slow Ecto Queries with AppSignal
  |  By Samuel Mullen
A sports car can only be driven as fast as the road it's driven on. If you're stuck behind a tractor on a single-lane road, you're not going anywhere fast. The same idea applies to web performance: your application's throughput is only as fast as it's slowest bottleneck. For Phoenix applications, that bottleneck is almost always the database.
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Master Your Coding Workflow with AppSignal MCP Server and Zed AI
  |  By Ewa Szyszka
With AppSignal's MCP Server and Zed AI, it's easier than ever to ship code with confidence, while cutting out time-consuming context switching. In this article, we'll show you how to master your coding workflow with the help of AppSignal's MCP Server and Zed's AI editor.
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Domains and Resources in Ash for Elixir
  |  By Shankar Dhanasekaran
If you’ve been on the fence about trying the Ash Framework, this post is for you. We’re going to explore why Ash is a game changer for Elixir developers by building something complex, real, but surprisingly elegant. We’ll create AshTherapy, an AI-powered therapeutic chat service that handles conversations, messages, and user interactions — all powered by Ash. Before we go further, let’s first answer the question: what exactly is Ash?
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An Introduction to Ruby Parsing with Prism
  |  By Matheus Richard
You might have heard about Prism, the new Ruby parser. Perhaps you've heard it's faster, more reliable, and more powerful than what we had before. Or maybe you never took a compilers class and aren't sure about what this actually means. I'm here to tell you all about it, and how it's changing our lives as Ruby developers. Today, I want to take you from square one to writing your first transpiler.
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Create a Markdown Editor in Ruby on Rails
  |  By Hans-Jörg Schnedlitz
In recent years, Markdown has become the lingua franca of plain-text files on the web. If you're a developer, you have read — and maybe even written — hundreds of Markdown documents over the course of your career. GitHub repositories use README files written in Markdown. Stack Overflow and Reddit use it to format posts. Technical documentation, blog posts, and entire books are written in Markdown. And it's not just for humans either!
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Improve Query Performance Using Python Django QuerySets
  |  By Federico Trotta
When developing web applications with Django, your interaction with the database impacts overall application performance. Django's Object-Relational Mapper (ORM) is a powerful ally that offers an intuitive way to work with your data through abstractions called QuerySets. These are your primary tools for fetching, filtering, creating, and managing data. In this article, we'll explore fundamental — yet highly effective — techniques to optimize your Django QuerySets.
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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.

AppSignal can also be found on OpsMatters.com

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