Magento 2 Catalog & Product Types

Before writing code

Fetch live docs:

1. Web-search site:developer.adobe.com commerce php development components catalog for catalog development
2. Web-search site:developer.adobe.com commerce php development components indexing for indexer guide
3. Fetch https://developer.adobe.com/commerce/php/development/components/indexing/ for indexing architecture

Product Types

Six Built-in Types

Configurable Products

The most complex type — a parent product with simple product children:

• Super attributes determine variations (e.g., color, size)
• Each combination maps to a child simple product with its own SKU and stock
• Frontend: dropdown selectors, price updates, image swapping
• Key tables: catalog_product_super_attribute, catalog_product_super_link

Custom Product Types

Possible to create custom types by:

• Extending Magento\Catalog\Model\Product\Type\AbstractType
• Registering in etc/product_types.xml
• Defining custom price model, stock handling, and checkout behavior

Categories

Category Tree

• Hierarchical structure with root categories and subcategories
• Each store view has one root category
• Categories use EAV for attributes
• URL rewrites generate SEO-friendly paths
• Display modes: products only, CMS block only, both

Category Attributes

• name, description, image, meta_title, meta_description
• is_active, include_in_menu, display_mode
• url_key, url_path
• Custom attributes addable via data patches

Indexing

Why Indexing Exists

EAV queries are expensive. Indexers pre-compute denormalized data for fast reads.

Standard Indexers

• catalog_product_price — pre-computed product prices
• catalogsearch_fulltext — search engine index (OpenSearch/Elasticsearch)
• catalog_product_attribute — filterable attributes for layered navigation
• cataloginventory_stock — stock status
• catalogrule_product — catalog price rules
• catalog_category_product — category-product associations

Index Modes

Mview (Materialized Views)

Changelog tables (*_cl) track changes via database triggers. Cron compares versions in mview_state to determine what needs reindexing. Efficient — only processes changed entities.

CLI Commands

bin/magento indexer:reindex                    # Reindex all
bin/magento indexer:reindex catalogsearch_fulltext  # Reindex specific
bin/magento indexer:status                     # Show status
bin/magento indexer:set-mode schedule           # Set all to schedule mode

Search Integration

• A search engine has been required since 2.4.0 (originally Elasticsearch; OpenSearch supported from 2.4.6; only OpenSearch from 2.4.8)
• Products, categories indexed for search and layered navigation
• Elasticsearch removed in 2.4.8
• Custom search attributes configurable per attribute

Best Practices

• Use "Update by Schedule" indexing in production
• Design catalog structure before adding products — attribute sets are hard to change later
• Use configurable products for variant-heavy catalogs
• Keep EAV attribute count reasonable — more attributes = slower indexing
• Test catalog operations at scale (1000+ products) to catch performance issues
• Use the repository pattern (ProductRepositoryInterface) for programmatic product access

Fetch the catalog and indexing docs for exact indexer configuration, product type XML schema, and search integration patterns before implementing.