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We'll use Sequelize to connect to a database, run queries, and handle results within a Node.js project.
Elixir
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JavaScript
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We'll set up tracing in your Elixir application using AppSignal.
Python
Ways to Optimize Your Code in Python
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Ruby
Set Up Tracing for a Ruby on Rails Application in AppSignal
Let's use AppSignal to detect, diagnose, remove performance bottlenecks, and employ tracing in a Ruby on Rails application.
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Let's set up Ecto monitoring in your Elixir application using AppSignal.
JavaScript
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Let's see what's worth getting excited about in the Node.js 24 release.
Ruby
An Introduction to Solid Queue for Ruby on Rails
In this two-part series, we'll dig deep into Solid Queue's internals, discover what makes it unique, and learn more about why it was created in the first place.
JavaScript
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We'll introduce the BiomeJS project, set it up in a project, and help you decide if you should migrate from Prettier or ESLint to Biome.
AppSignal
AppSignal Closes $22 Million Growth Investment
AppSignal closes a $22 million growth investment led by Elsewhere Partners, enabling us to take AppSignal to the next level.
Python
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We'll build a JWT-based authentication system by creating a to-do list API using Flask.
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- How to Read Performance Metrics in AppSignal
- Sidekiq Optimization and Monitoring
- JavaScript Errors: An Exceptional History
- Launching JavaScript Error Tracking v1.0.
- Typespecs and Behaviours in Elixir
- Introducing area charts for custom dashboards.
- How We Tracked Down an Exception Without Errors: A Detective Story
- Ruby Templating: Baking an Interpreter
- Migrate to our new Slack App!
- TL;DR: Our new logo
- Flags, Seeds and Idempotency: Database Tooling with Elixir
- The Inherited Hook Method in Ruby - and More Parenting Lessons
- New Sample Page Graphs and Navigation
- Type Checking in Ruby — Check Yo Self Before You Wreck Yo Self
- Cleaning Up Ruby Strings 13 Times Faster
- Multiplayer Go with Elixir's Registry, PubSub and dynamic supervisors
- Digging Deeper into Ruby Templating: The Parser
- Metaprogramming: From C Preprocessing to Elixir Macros
- JavaScript Iterators and Iterables
- Last week's Product Improvements (July 15th, 2019)
- Productive Procrastination for Programmers - works for Ruby and Elixir
- Building the Go Game in Elixir - Time Travel and the Ko Rule
- Brewing our own Template Lexer in Ruby
- Introducing Incident Context and Incident Notes
- Building and Playing the Go Game with Phoenix LiveView
- The Ultimate Checklist to Properly Internationalize Devise
- How We Do VAT for Our SAAS with Stripe
- Introducing our Clubhouse integration
- Inside Enumeration in Ruby
- New Magic Dashboard: Heroku Postgres
- Doing Background Work Using a Native Elixir Approach
- Up the Ancestor Chain with method_missing
- Ruby's Hidden Gems -Delegator and Forwardable
- Kafka and Ruby, a Sidekiq Lovestory
- We've got your back at RailsConf
- More personal email notification preferences
- Routing in Phoenix Umbrella Apps
- Learning by building, a Background Processing System in Ruby
- Memory Magic Dashboard
- Pinned apps
- Introducing Magic Dashboards
- Object Marshalling in Ruby
- Revamped dashboards!
- Iteration, Recursion, and Tail-call Optimization in Elixir
- Improved navigation for better feature discovery.
- Ruby's Hidden Gems, StringScanner
- Diving into Ruby's #dup and #clone
- Pouring Protocols in Elixir
- Monitoring MongoDB Replicaset Lag with AppSignal
- Introducing our Google Hangouts Chat integration
- Unraveling Classes, Instances and Metaclasses in Ruby
- Introducing our Asana integration
- An instrumental intro to GraphQL with Ruby
- Serving Plug - Building an Elixir HTTP server from scratch
- Bindings and Lexical Scope in Ruby
- Elixir package 1.9: Improved Erlang error & Container memory support
- Ruby gem 2.8 - Container memory & JRuby on Alpine Linux support
- Don't be mean: Statistical means and percentiles 101
- Fibers and Enumerators in Ruby - Turning Blocks Inside Out
- Understanding Elixir’s GenStages - Querying the Blockchain
- Testing Asynchronous Threads in Ruby
- Building a Ruby C Extension From Scratch
- The innards of a RubyGem
- Hot Code Reloading in Elixir
- ActiveRecord vs. Ecto Part Two
- Improved Navigation
- The Magic of Class-level Instance Variables
- ActiveRecord vs. Ecto Part One
- #to_s or #to_str? Explicitly casting vs. implicitly coercing types in Ruby
- How OTP Applications are structured
- Differences Between #nil?, #empty?, #blank?, and #present?
- Closures in Ruby: Blocks, Procs and Lambdas
- Push and Pub/Sub in Ruby
- Lists vs Tuples in Elixirs
- Rails Collection Caching
- Elixir package 1.8: Improvements!
- Ruby gem 2.7: Improvements and bug fixes
- Changing the Way Ruby Creates Objects
- Generating Random Numbers in Ruby
- Ruby Magic Summer Special: The Best of AppSignal Academy
- Parsing Numbers in Elixir
- JavaScript-sprinkled Rails Applications
- Elixir integration 1.7 released
- Under the Hood: “Slurping” and Streaming Files in Ruby
- AppSignal Dashboard: Live updating insights
- Custom Exceptions in Ruby
- Rebooting the Luftschiff!
- Caching counters with ActiveRecord's counter caches
- Deconstructing Elixir's GenServers
- Ruby's redo, retry and next keywords
- Ruby's magical Enumerable module
- Speeding up your app’s navigation with Turbolinks
- Ensuring execution, retrying failures and reraising exceptions in Ruby
- Elixir integration 1.6: The GDPR release!
- General Data Protection Regulation (GDPR)
- Ruby gem 2.6: The GDPR release!
- Client-side caching in Rails: conditional GET requests
- ActiveRecord performance: the N+1 queries antipattern
- Post-mortem: April 19th, 2018
- Rails' built-in cache stores: an overview
- New GitHub integration
- Rescuing exceptions in Ruby
- AppSignal UI updates
- Elixir integration 1.5 released
- Russian doll caching in Rails
- Understanding system load and load averages
- Fragment caching in Rails
- Exceptions in Ruby
- Understanding CPU statistics
- Benchmarking Ruby Code
- Inspecting data in Ruby
- Comparing host metrics
- Syntactic sugar methods in Ruby
- Ruby gem 2.5 - JRuby support!
- Debugging exceptions in Rails
- Improved host metrics and alerts
- Reading and understanding Ruby stack traces
- Track cache hits with custom metrics
- Elixir integration 1.4 released
- Ruby gem 2.4 - FreeBSD support and more exceptions!"
- Koos: keeping others off support
- Better, more and more specific notification options
- Two-factor authentication
- (Mass) Change incident status
- Introducing Anomaly detection (Beta)
- Improved Snapshots of your apps
- Supervisors: Building fault-tolerant Elixir applications
- Elixir integration 1.3 released
- A look at how Ruby interprets your code
- Improved Slack notifications
- Gem 2.3 - ActionCable!
- Concurrency Deep Dive: Event loops
- Demystifying processes in Elixir
- Gem 2.2 - Custom namespaces!
- Concurrency Deep Dive: Multi-threading
- Elixir integration 1.2 released
- Elixir integration 1.1 released
- Concurrency Deep Dive: Multi-process
- Launching AppSignal for Elixir
- Gem 2.1 released - Alpine Linux support!
- Documentation updates
- Running Rack: How Ruby HTTP servers run Rails apps
- Escaping characters in Ruby
- Learning how to become a product business
- Review active browser sessions
- Add custom markers from any graph
- Building a 30 line HTTP server in Ruby
- Custom Markers
- Gem 2.0 released 🎉
- Rescuing Exceptions in Ruby: A Primer
- Rebasing a complex branch in Git
- Introducing: A new layout for AppSignal
- Gem 1.3: Giving Sinatra some love
- How to tame your growing users table
- Introduction to Garbage Collection (Part II)
- Host metrics in samples
- Introduction to Garbage Collection (Part I)
- Monitor MongoDB (query) load with Custom Metrics
- New event timeline
- Gem 1.2: Host metrics
- Gem version 1.1
- Share the love: give 100, get 100
- Upgrading to Mongoid 5 / mongo-ruby-driver
- Mastering Concurrency
- Introducing Graph Toggles
- Stroopwafels and how to eat them
- How to use custom metrics
- Getting high on our own supply
- Shipped it: A partnership with the Ruby on Rails podcast
- Event type graphs
- AppSignal agent release
- Phabricator integration
- PagerDuty integration
- OpsGenie integration
- Five Signs to Recognize a Future Customer
- Gem version 0.11.13 released
- Custom notifications with Zapier
- Automated screenshots using Capybara and Selenium
- Padrino support
- Issue states, notification settings & interface updates
- Introducing the Intercom integration beta
- Handling VAT with Stripe: Follow up
- Introducing the JIRA beta
- Official Sinatra support
- Introducing the Zapier beta (No Official Support Since 2017)
- GitLab integration
- Gem version 0.11
- AppSignal integrates with Pivotal Tracker, GitHub & Trello
- First steps towards a new front-end architecture
- Handling VAT with Stripe
- Post-Mortem: Why our gem disabled itself
- Gem version 0.10
- Consistent API
- Flowdock integration
- Gem version 0.9
- Our response to Heartbleed
- Stroopwafels as a Service
- Set notification settings per application
- Vastly improve performance for MongoDB, Mongoid and Sidekiq
- Refactoring design
- Error, performance and deploy notifications in Slack
- We now monitor your background jobs
- Realtime graphs from MongoDB with aggregations
- AppSignal API
- Error request tagging
- AppSignal and Shelly Cloud partner up
- Improved graphs and snapshots
- Taming our MongoDB database size.
- AppSignal Sunday
- Poor man's usability testing
- Developers and designers: an arranged marriage.
- Gem version 0.6
- A quick post about reducing MongoDB queries
- User test
- Designing AppSignal
- Opening up shop
- 401: Unauthorized
- Filtering sensitive data from params
- Better graphs, event tree & new hosts section
- jQuery toggle() is slow, JavaScript to the rescue
- Welcome to AppSignal!
AppSignal monitors your apps
AppSignal provides insights for Ruby, Rails, Elixir, Phoenix, Node.js, Express and many other frameworks and libraries. We are located in beautiful Amsterdam. We love stroopwafels. If you do too, let us know. We might send you some!
