Database Reference
In-Depth Information
Heroku Postgres follower databases
The follower database is a feature that helps the scalability of your Heroku applications.
Through the follower database, Heroku provides a way to increase the efficiency of reading
your database data by creating a master-slave structure. Each slave is one follower in read-
only mode, and the data is updated from master to slave in real time.
The most common use of a follower database is when you want to increase the perform-
ance to access your data; for example, imagine that you have a web application with a huge
number of users. If all users access the same database, you will probably have performance
issues. A good solution to this is to create copies of your main database, and when each
user needs any data, the system redirects the request for a copy of the database. This way,
you have a database distributed system. Through Heroku Postgres follower databases, you
can add many follower databases for your application.
