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Overcome 10k rows database limit on Heroku by upgrading the database plan

Over time I have collected quite a number of small Rails heroku apps. They usually start small, but overtime they hit the limit of 10k rows and it’s time to upgrade the database plan. Every time I do it, I hit the heroku documentation just to realize that their way of explaining doesn’t fit me well.

This usually means that I then google a lot and only after 10 minutes I find what I look for.

This blogpost is my attempt to make myself a quick summary of what needs to be done:

And yes, Andrzej, if you read it in the future - you do need to provision a new database to overcome the 10k limit. There’s no way of just upgrading this limit on the UI with one button.

Before I start I make sure that I don’t need to append the name of the app to each command, by:

heroku git:remote -a myapp

  • create new postgres add-on (choose Hobby Basic) in UI
  • heroku maintenance:on
  • heroku pg:promote HEROKU_POSTGRESQL_CHARCOAL
  • heroku maintenance:off
  • remove old Postgres add-on

Also, if you are looking for a team to hire - it might be an exceptional moment in our history to do so. We are typically fully booked and rarely jump on new projects, but we’re available for hire starting from Q3 2020. Drop us a line.

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