Managing Magento 2 indexes via the command line

In the current version of Magento, using indexes is one of the most important key features. Without the correct indexes, we will not be able to use Magento properly.

What do the indexes do, and why are they so important? One of the key elements is to make things run faster. Without indexing, Magento 2 would have to calculate data on the fly. In Magento 2, we will be using the following nine indexes:

• Customer Grid: This indexer rebuilds the customer's grid. This is a new indexer in Magento 2 for optimized rendering of the adminhtml backend pages.
• Category Products: This indexer creates the association between categories and products based on the associations that you set in the backend on the categories and relates to the Product Categories indexer. The flat catalog indexer creates a flat optimized table in the database.
• Product Categories: This indexer creates the association between products and categories based on the associations that...