Scout Ruby Monitoring Agent

Scout’s Ruby monitoring agent instruments common libraries (like ActiveRecord), generates transaction traces, and reports the data to Scout. To install, just add Scout to your Gemfile.

• Requirements
• Installation
• Configuration
  • Load Order
  • Reference
  • App Environments
  • Docker & PaaS
  • Ignoring Transactions
  • Sampling Transactions
• Troubleshooting
  • No Data
  • Significant time spent in “Controller” or “Job”
  • Missing memory metrics
• Updating
• Supported Frameworks
  • Ruby on Rails
  • Rack
  • Sinatra
  • Sneakers
• Deploy Tracking
• DevTrace
• Context
  • User Context
  • General Context
  • Default Context
  • Context Types
  • Context Field Name Restrictions
  • Example: adding the current user’s email as context
  • Example: adding the monthly spend as context
• Instrumentation
• Custom Instrumentation
  • Limits
  • Instrumenting method calls
• Request Queuing
  • HTTP Header
  • Apache
  • HAProxy
  • Nginx
• Server Timing
• Overhead
  • Enabling the detailed_middleware option
  • Resque Instrumentation