Gem Compatibility and Deployment Failures:
Solution: Ensure that your app’s dependencies are compatible with your Rails version. Use bundle outdated to identify outdated gems. Refer to documentation or changelogs when upgrading gems.
Routing Errors:
Problem: Unwanted routing errors can occur in production. Common ones include:
ActiveRecord: RecordNotFound (404): Indicates a missing resource.
nil. method (500): Server error unless you turn off “whiny nils. ”
ActionController:: RoutingError (404): Page not found.
Solution: Verify that your request’s path and HTTP verb match defined routes using rails routes.
Error Handling in Production:
Problem: In production, unhandled exceptions result in either a 404 or a 500 error message.
Solution: Customize error pages (404. html and 500. html) in the public folder to provide better user experience.
Infrastructure and Log Management:
Solution: Use tools like SolarWinds Papertrail for log management and Pingdom for uptime monitoring. Aggregate log data, search logs, and receive alerts.
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