SMRTR ProgrammingMar 7, 2025Daily.dev

An Opinionated Guide to Configuring Rails on Heroku

SMRTR summary

A guide details best practices for deploying Rails on Heroku, including enabling JEMALLOC, setting RAILS_MAX_THREADS to 3, and activating YJIT. It covers Puma and Sidekiq configurations, dyno sizing, and recommended add-ons like Redis Cloud and LogTail. The guide suggests using Cloudflare for security and asset delivery, and stresses the importance of autoscaling and monitoring for optimal performance as the application scales.

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