APM Academy
Improve Your Life with Long Error Messages
Your error messages should answer three questions: what happened, where did it happen and how can I make the error go away? Find out how long error messages can help make your life easier.
APM Academy
CPU Steal Time: A Crucial Metric for Cloud Servers and VMs
In this post, we'll explain what CPU steal is, how to monitor it, and what happens to your app when CPU steal is high.
APM Academy
Adding Kubernetes Metadata to Your AppSignal Errors
If you're trying to figure out how to add Kubernetes metadata to your AppSignal errors, this post is for you.
APM Academy
The Wolf Pack Tactic for Monitoring Slow APIs
In this post, we will deal with monitoring external APIs and how you can prevent them from slowing you down.
APM Academy
Troubleshooting ActiveRecord Performance
You usually don't need to worry about AcriveRecord and its inner workings. This post comes in handy when performance issues arise and you have to start worrying about it.
APM Academy
Microservices Monitoring: Using Namespaces for Data Structuring
Microservices pose unique challenges for error reporting and instrumentation. Today, we’ll explore the best way to monitor them using namespaces in AppSignal.
APM Academy
Structuring Monitoring Data in Monolithic Applications With Namespaces
Namespaces help you make sense of what’s happening in your application. Knowing how they work is especially useful for large monolithic projects.
APM Academy
Monitoring Any System with StatsD and AppSignal's Standalone Agent
To extend monitoring everywhere and have all data in a single place, check out our standalone agent.
APM Academy
How AppSignal Monitors Their Own Kafka Brokers
We dip our toes into collecting custom metrics for our Kafka brokers by using the standalone AppSignal agent.
APM Academy
Changing the Approach to Debugging in Ruby with TracePoint
Learn more about TracePoint and how it makes code tell us what it's doing.
APM Academy
What's The Difference Between Monitoring Webhooks and Background Jobs
In which we explain how to set up different monitoring for apples and pears in your architecture.
APM Academy
Facade Pattern in Rails for Performance and Maintainability
Find out how and why you should use a software design pattern named Facade.
More articles
- How to Monitor Your Host Metrics Automatically
- Getting Started With System Tests in Rails With Minitest
- Rails is Fast: Optimize Your View Performance
- How to Read Performance Metrics in AppSignal
- Sidekiq Optimization and Monitoring
- The Inherited Hook Method in Ruby - and More Parenting Lessons
- Cleaning Up Ruby Strings 13 Times Faster
- The Ultimate Checklist to Properly Internationalize Devise
- Up the Ancestor Chain with method_missing
- Object Marshalling in Ruby
- Diving into Ruby's #dup and #clone
- An instrumental intro to GraphQL with Ruby
- Don't be mean: Statistical means and percentiles 101
- Testing Asynchronous Threads in Ruby
- The innards of a RubyGem
- #to_s or #to_str? Explicitly casting vs. implicitly coercing types in Ruby
- Differences Between #nil?, #empty?, #blank?, and #present?
- Push and Pub/Sub in Ruby
- Rails Collection Caching
- Generating Random Numbers in Ruby
- JavaScript-sprinkled Rails Applications
- Custom Exceptions in Ruby
- Caching counters with ActiveRecord's counter caches
- Ruby's redo, retry and next keywords
- Speeding up your app’s navigation with Turbolinks
- Ensuring execution, retrying failures and reraising exceptions in Ruby
- Client-side caching in Rails: conditional GET requests
- ActiveRecord performance: the N+1 queries antipattern
- Rails' built-in cache stores: an overview
- Rescuing exceptions in Ruby
- 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
- Debugging exceptions in Rails
- Reading and understanding Ruby stack traces
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!
