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Best Practices for Queries and Indexing | AEM Community Discussion



Best Practices for Queries and Indexing by Adobe Docs


Along with the transition to Oak in AEM 6, some major changes were made to the way that queries and indexes are managed. Under Jackrabbit 2, all content was indexed by default and could be queried freely. In Oak, indexes must be created manually under the oak:index node. A query can be executed without an index, but for large datasets, it will execute very slowly, or even abort.
This article will outline when to create indexes as well as when they are not needed, tricks to avoid using queries when they are not necessary, and tips for optimizing your indexes and queries to perform as optimally as possible.
Additionally, make sure to read the Oak documentation on writing queries and indexes . In addition to indexes being a new concept in AEM 6, there are syntactical differences in Oak queries that need to be taken into account when migrating code from a previous AEM installation.

When to Use Queries
Repository and Taxonomy Design
When designing the taxonomy of a repository, several factors need to be taken into account. These include access controls, localization, component and page property inheritance among others.
While designing a taxonomy that addresses these concerns, it is also important to consider the "traversability" of the indexing design. In this context, the traversability is the ability of a taxonomy that allows content to be predictably accessed based on its path. This will make for a more performant system that is easier to maintain than one that will require a lot of queries to be executed.

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Best Practices for Queries and Indexing


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