In this chapter, you learned how to access logs generated by Heroku Postgres. You understood that logs are important tools for investigating and solving problems related to your application and database. You also learned how to identify and solve the most common errors that may occur.

In the last part of this chapter, you learned how to gather metrics information on your database. You understood that this information is important for you to make decisions in order to improve your database, and that some issues can be resolved by optimizing your application.

In the next and final chapter of this book, you will learn about some additional issues necessary for many developers, and you will learn how to use some tools such as full text search, data caching, PostGIS, and some other interesting extensions.