how to change heroku dynos from rails

Question

I have an application that processes a lot of data but has very few visitors.

I need about 4 dynos when I have visitors but I don't have visitors every day.

Is there a way to add dynos from my rails app when one logs in?

Thanks.

Answer 1

There are a couple of things you could Try for this:

1. Heroku Plugin: adept-scale - Auto scales the web dynos when required

2. Rails gem (just a proof of concept currently): heroku-autoscale - you will need to put in effort to implement this

3. Web service: hirefire - Can schedule on which days you need more Dynos

Some Stackoverflow links for Question like these:

• Gems/Services for autoscaling Heroku's dynos and workers
• How does one autoscale web dynos on Heroku?

OR

Using Heroku Platform API via Ruby code on Login:

• Dyno API to create Dyno: https://devcenter.heroku.com/articles/platform-api-reference#dyno and
• Formation API, which could be used to scale Dynos: https://devcenter.heroku.com/articles/platform-api-reference#formation