Rails Autoscale

Simple, reliable queue-based autoscaling for your Rails app. Starting at $0/mo.

A smarter way to autoscale

Rails Autoscale is the only autoscaler based on request queue time, not total response time. Some endpoints naturally take longer than others, and that shouldn’t trigger scaling. Rails Autoscale watches for real capacity issues to scale your app reliably and consistently.

Nate “If I was the king of the world, I would make it illegal to horizontally scale based on execution time. Scale based on queue depths, people!”
– Nate Berkopec, The Complete Guide to Rails Performance

Sleep well, without stress

Never worry about slow-downs or traffic spikes again. Stop guessing about the “right” number of dynos for your app. Let Rails Autoscale do the dirty work so you can focus on building, not managing.

Cut your Heroku bill in half

Most apps are overscaled so they can handle peak traffic. Rails Autoscale easily pays for itself by scaling down your app during quieter periods, Some apps earn back half of what they were previously paying for Heroku. Try it and be amazed at how many dynos you don’t need.

Mark “Rails Autoscale has allowed us to reduce our dyno usage for our primary application down to less than half of what we were using before, which is amazing (and allows us to not have to upgrade our Heroku plan). Thanks for making this, it really is a great little service.”
– Mark Urich

Impossibly simple

Rails Autoscale embraces the 80/20 rule and provides sensible defaults that work for 80% of apps. No sweat if you’re in the remaining 20%. Just a few tweaks is all it takes to get your app scaling smoothly.

Sam “Rails Autoscale saved me big time yesterday!! I’m new to this and I’m learning on the fly, but you made it very easy.”
– Sam Wood

Pricing that makes sense

The more dynos you use, the more money you save by autoscaling. Rails Autoscale is priced accordingly. All plans get all the features. The only difference is number of dynos supported.

A partner to support you

Adam I’m Adam, the solo founder of Rails Autoscale and a Rails developer like you. I personally answer every support request, and it makes my day to help developers run their Heroku apps with confidence.
Got a question? Send me an email!

Andrew “I’ve used most of them. Adam’s is the best. I highly recommend it.”
– Andrew Culver, Bullet Train

How it works

Region Availability

The available application locations for this add-on are shown below, and depend on whether the application is deployed to a Common Runtime region or Private Space. Learn More

  • Common Runtime
  • Private Spaces
Region Available
United States Available
Europe Available
Region Available Installable in Space
Virginia Available
Oregon Available
Frankfurt Available
Tokyo Available
Sydney Available
Dublin Available

Plans & Pricing

    • Trial length 7 days
    • Autoscale limit (any dyno type) unlimited
    • Email notifications
    • Chat notifications
    • Configurable upscale threshold
    • Configurable downscale threshold
    • Friendly customer support
    • Trial length n/a
    • Autoscale limit (any dyno type) 3 dynos
    • Email notifications
    • Chat notifications
    • Configurable upscale threshold
    • Configurable downscale threshold
    • Friendly customer support
    • Trial length n/a
    • Autoscale limit (any dyno type) 9 dynos
    • Email notifications
    • Chat notifications
    • Configurable upscale threshold
    • Configurable downscale threshold
    • Friendly customer support
    • Trial length n/a
    • Autoscale limit (any dyno type) 29 dynos
    • Email notifications
    • Chat notifications
    • Configurable upscale threshold
    • Configurable downscale threshold
    • Friendly customer support
    • Trial length n/a
    • Autoscale limit (any dyno type) unlimited
    • Email notifications
    • Chat notifications
    • Configurable upscale threshold
    • Configurable downscale threshold
    • Friendly customer support
Install Rails Autoscale
heroku addons:create rails-autoscale

To provision, copy the snippet into your CLI or use the install button above.

Rails Autoscale Documentation