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Author:
Ajeet Raina, Former Developer Growth Manager at Redis

How to build a Python based application on Heroku using Redis

Step 1. Create Redis Enterprise Cloud

Create your free Redis Enterprise Cloud account. Follow this link to create Redis Enterprise Cloud subscription and database as shown below:

heroku

Save the database endpoint URL and password for future reference.

Step 2. Create a Heroku account

If you are using Heroku for the first time, create your new Heroku account through this link

heroku

Step 3. Install Heroku CLI on your system

 brew install heroku

Step 4. Login to Heroku

 heroku login
heroku: Press any key to open up the browser to login or q to exit:
Opening browser to https://cli-auth.heroku.com/auth/cli/browser/XXXXXXXXXXA
Logging in... done
Logged in as your_email_address

Step 5. Connect your application to Redis Enterprise Cloud

For this demonstration, we will be using a Sample Rate Limiting application

Clone the repository

 git clone https://github.com/redis-developer/basic-rate-limiting-demo-python

Run the below CLI to have a functioning Git repository that contains a simple application as well as a package.json file.

$ heroku create
Creating app... done, ⬢ fast-reef-76278
https://fast-reef-76278.herokuapp.com/ | https://git.heroku.com/fast-reef-76278.git

Step 6. Setting up environment variables

Go to Heroku dashboard, click "Settings" and set REDIS_ENDPOINT_URI and REDIS_PASSWORD under the Config Vars. Refer to Step 1 for reference.

heroku

Step 7. Deploy your code

Heroku generates a random name (in this case fast-reef-76278) for your app, or you can pass a parameter to specify your own app name. Now deploy your code:

$ git push heroku
Enumerating objects: 512, done.
Counting objects: 100% (512/512), done.
Delta compression using up to 12 threads
Compressing objects: 100% (256/256), done.
Writing objects: 100% (512/512), 1.52 MiB | 660.00 KiB/s, done.
Total 512 (delta 244), reused 512 (delta 244)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Building on the Heroku-20 stack
remote: -----> Determining which buildpack to use for this app
remote: -----> Python app detected


emote: -----> Compressing...
remote: Done: 59.3M
remote: -----> Launching...
remote: Released v5
remote: https://fast-reef-76278.herokuapp.com/ deployed to Heroku
remote:
remote: Verifying deploy... done.
To https://git.heroku.com/fast-reef-76278.git
* [new branch] master -> master

Step 8. Accessing the application

Open https://fast-reef-76278.herokuapp.com/ to see your application

heroku

Next Steps