For this recipe, we will be using the my_library module from the previous recipe. We will store separate SEO data for each book details page. Before developing this recipe, you should test the SEO options in the different book pages. You can get an SEO dialog from the Promote drop-down menu on the top, as shown in the following image:

If you test SEO options in different book details pages, you will notice that changing the SEO data in one book page will reflect on all book pages. We will fix this issue in this recipe.