Ruby on Rails Q & A


How to monitor a Rails application?

Monitoring a Rails application is crucial for maintaining its health, optimizing performance, and ensuring a smooth user experience. There are several tools and practices you can employ to effectively monitor your Rails applications:


  1. Performance Monitoring: 

   – New Relic: One of the most popular SaaS-based application performance monitoring tools, New Relic provides deep insights into how your Rails application is performing in production. It tracks response times, database queries, errors, and much more. Integrating New Relic with Rails is straightforward with its dedicated gem.


  1. Error Tracking:

   – Sentry: Sentry is a robust error tracking tool that captures runtime errors in real-time. With its dedicated Ruby gem, it can be easily integrated into Rails, providing stack traces, affected users, and other error-related insights.


  1. Log Management:

   – Lograge: Rails’ default logs can be verbose. Lograge customizes and reduces the noise in the logs, making them more readable and concise. It’s particularly useful for aggregating logs in a structured manner.

   – Elasticsearch, Logstash, and Kibana (ELK Stack)**: This combination allows you to aggregate logs from your Rails application, process them, and then visualize them in a dashboard.


  1. Uptime Monitoring:

   – Uptime Robot or **Pingdom: These tools check if your website is up and running at regular intervals. They can send alerts if your site goes down.


  1. Database Performance:

   – pgHero or rack-mini-profiler: For applications using PostgreSQL, pgHero provides insights into database performance and potential issues. For a more general profiling tool, rack-mini-profiler can be added to any Rack application, including Rails, to give a middleware-level performance overview.


  1. Custom Metrics:

   – StatsD with Grafana: If you have custom metrics or KPIs, you can send them to StatsD, which can then be visualized using Grafana or other dashboard tools.


Effectively monitoring a Rails application requires a combination of tools and practices designed to track errors, performance issues, uptime, and other crucial metrics. Regularly reviewing these insights can aid in timely intervention, ensuring optimal performance and enhanced user experience.

Previously at
Flag Argentina
time icon
Senior Software Engineer with a focus on remote work. Proficient in Ruby on Rails. Expertise spans y6ears in Ruby on Rails development, contributing to B2C financial solutions and data engineering.