@SaptakS I wanted to discuss about the Redis add-on on Heroku. It is not available for users who don't have a credit card. The other alternative is to create a free Redis instance on a Redis cloud hosting service providers like redisLab and use the generated address as the REDIS_URL on Heroku. Since I don't own a credit card, I had to follow the above procedure. Should we mention this on the documentation? It will be helpful to people who don't have a credit card.