Magento_Indexer module

This module provides Magento Indexing functionality. It allows to:

• read indexers configuration
• represent indexers in admin
• regenerate indexes by cron schedule
• regenerate indexes from console
• view and reset indexer state from console
• view and set indexer mode from console

Installation

The Magento_Indexer module is one of the base Magento 2 modules. You cannot disable or uninstall this module.

This module is dependent on the following modules:

• Magento_Store
• Magento_AdminNotification

The Magento_Indexer module creates the following tables in the database:

• indexer_state
• mview_state

For information about a module installation in Magento 2, see Enable or disable modules.

Structure

App/ - the directory that contains launch application entry point.

For information about a typical file structure of a module in Magento 2, see Module file structure.

Extensibility

Extension developers can interact with the Magento_Indexer module. For more information about the Magento extension mechanism, see Magento plugins.

The Magento dependency injection mechanism enables you to override the functionality of the Magento_Indexer module.

Events

The module dispatches the following events:

Model

• clean_cache_by_tags event in the \Magento\Indexer\Model\Indexer\CacheCleaner::cleanCache method. Parameters:
  • object is a cacheContext object (Magento\Framework\Indexer\CacheContext class)

Plugin

• clean_cache_after_reindex event in the \Magento\Indexer\Model\Processor\CleanCache::afterUpdateMview method. Parameters:

  • object is a context object (Magento\Framework\Indexer\CacheContext class)

• clean_cache_by_tags event in the \Magento\Indexer\Model\Processor\CleanCache::afterReindexAllInvalid method. Parameters:

  • object is a context object (Magento\Framework\Indexer\CacheContext class)

For information about an event in Magento 2, see Events and observers.

Layouts

This module introduces the following layout handles in the view/adminhtml/layout directory:

• indexer_indexer_list
• indexer_indexer_list_grid

For more information about layouts in Magento 2, see the Layout documentation.

Additional information

Indexer modes

There are 2 modes of the Indexers:

• Update on Save - index tables are updated immediately after the dictionary data is changed
• Update by Schedule - index tables are updated by cron job according to the configured schedule

Console commands

Magento_Indexers provides console commands:

• bin/magento indexer:info - view a list of all indexers
• bin/magento indexer:status [indexer] - view index status
• bin/magento indexer:reindex [indexer] - run reindex
• bin/magento indexer:reset [indexer] - reset indexers
• bin/magento indexer:show-mode [indexer] - view the current indexer configuration
• bin/magento indexer:set-mode {realtime|schedule} [indexer] - specify the indexer configuration
• bin/magento indexer:set-dimensions-mode [indexer] - set indexer dimension mode
• bin/magento indexer:show-dimensions-mode [indexer] - set indexer dimension mode

Cron options

Cron group configuration can be set at etc/crontab.xml:

• indexer_reindex_all_invalid - regenerate indexes for all invalid indexers
• indexer_update_all_views - update indexer views
• indexer_clean_all_changelogs - clean indexer view changelogs

Learn how to configure and run cron in Magento..

More information can get at articles:

• Learn more about indexing
• Learn more about Indexer optimization
• Learn more how to add custom indexer
• Learn how to manage indexers
• Learn more about Index Management

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