DocumentationCommerceAdmin Systems Guide

Cache management

Last update: Wed Apr 10 2024 00:00:00 GMT+0000 (Coordinated Universal Time)

CREATED FOR:

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The Adobe Commerce and Magento Open Source cache management system provides an easy way to improve the performance of your site. Whenever a cache requires a refresh, a notification displays with a link to the Cache Management page to complete the refresh.

Save product attribute - update cache message {width="500"}

The Cache Management page shows the status of each primary cache and its associated tag. The large buttons in the upper-right corner can be used to flush the cache, or the all-inclusive Cache Storage. At the bottom of the page, additional buttons allow you to flush the catalog product images cache and JavaScript/CSS cache.

IMPORTANT
When catalog entities are changed, it can affect other pages and invalidate multiple caches simultaneously. When you review the cache management page, you could see invalid items that require refresh when they were not edited directly. For example, this invalidation occurs when you edit any product in the catalog that is assigned to any category, or when you change any related product rule.

After clearing a cache, always refresh your browser to make sure that you can see the most recent files. Clearing the Commerce cache does not clear your web browser cache. You might need to clear the browser cache to see updated content.

Additional technical information about Adobe Commerce caching is available from the Cache overview in the Commerce Frontend Development Guide.

Access the Cache Management page by doing one of the following:

  • Click the Cache Management link in the message above the workspace.
  • On the Admin sidebar, go to System > Tools > Cache Management.

Cache management {width="700" modal="regular"}

Best Practices for caching

Reindexing and caching have different purposes in Commerce. Indexes track database information for increased search performance, faster data retrieval for storefronts, and more. Caches save loaded data, images, formats, and the like for increased performance loading and accessing the storefront.

  • Always flush the cache after installing extensions/modules. You can install one or more extensions, then flush the cache.
  • Flush the cache after installing Commerce. For fresh installs, you should also reindex.
  • Flush the cache after upgrading from one version of Open Source or Commerce to another.
  • When flushing caches, consider the type of cache and scheduling the flushing during non-peak times. For example, pick a time when few customers use the site such as late night or early morning. Clearing cache types during peak demand can increase load on the Admin and cause the site to go down until the operation completes.
  • When reindexing, you do not need to flush the cache.

Cache management role resources

You can assign access to specific cache maintenance actions to users by role, including options to view, toggle, and flush caches. Adobe recommends enabling flush actions only for administrator level users. Providing access to all Cache Management features can impact your storefront’s performance.

Role resources - cache management {width="600" modal="regular"}

For information about assigning resources to grant access for Admin user accounts, see Role resources. The following resources control access to the cache management tools:

  • Clean Cache Actions

    • Flush Cache Storage
    • Flush Magento Cache

  • Cache Type Management

    • Toggle Cache Type
    • Refresh Cache Type

  • Additional Cache Management

    • Catalog Images Cache
    • Flush Js/Css
    • Flush Static Files

Refresh specific caches

  1. For each cache to be refreshed, select the checkbox at the beginning of the row.

  2. Set Actions to Refresh and click  Submit.

Perform mass action refresh

  1. To select a group of caches, set Mass Actions to one of the following:

    • Select All
    • Select Visible

  2. Select the checkbox for each cache to refresh.

  3. Set Actions to Refresh and click  Submit.

Flush the product image cache

  1. Under Additional Cache Management, click Flush Catalog Images Cache to clear pre-generated product image files.

    The Image cache was cleaned message appears at the top of the workspace.

  2. Clear the cache of your browser.

Flush the JavaScript/CSS cache

  1. Under Additional Cache Management, clear Javascript and CSS files that have been merged into a single file by clicking Flush JavaScript/CSS Cache.

    The The JavaScript/CSS cache has been cleaned message appears at the top of the workspace.

  2. Clear the cache of your browser.

Flush using the command line

System Administrators and developers with access to the Commerce application server can also manage the cache and cache configuration from the command line using the Commerce CLI. See Manage the cache in the Configuration Guide.

Controls

Control
Description
Mass Actions
Selects the checkbox of multiple caches. Options:
Select All — Selects the checkbox of all caches.
Unselect All — Clears the checkbox of all caches.
Select Visible — Selects the checkbox of all visible caches.
Unselect Visible — Clears the checkbox of all visible caches.
Actions
Determines the action to be applied to all selected caches. Options:
Enable — Enables all selected caches.
Disable — Disables all selected caches.
Refresh — Refreshes all selected caches.
Submit
Applies the action to all selected caches.

Buttons

Button
Description
Flush Magento Cache
Removes all items in the default Commerce cache (var/cache), according to their associated Commerce tags.
Flush Cache Storage
Removes all items from the cache, regardless of Commerce tag. If your system uses an alternate cache location, any cached files used by other applications are removed in the process.
Flush Catalog Images Cache
Removes all automatically resized and watermarked catalog images that are stored in media/catalog/product/cache. If recently uploaded images are not reflected in the catalog, try flushing the catalog and refreshing your browser.
Flush JavaScript/CSS Cache
Removes the merged copy of JavaScript and CSS files from the cache. If recent changes to the style sheet or JavaScript are not reflected in the store, try flushing the JavaScript/CSS cache and refreshing your browser.
Flush Static Files Cache
Removes preprocessed view files and static files.

Caches

The Cache Management page lists the cache types that you can manage from the Admin with their current status. This section describes the default cache types supported by Adobe Commerce. The Cache Tag and Cache id columns describe values used in the Commerce application code:

  • cache_type_id defines the unique identifier for a cache type.

  • %CACHE_TYPE_TAG% defines the unique tag to be used in cache type scoping.

Developers and system integrators use these values to configure and manage caching when customizing or integrating with Adobe Commerce, for example developing integrations using GraphQL APIs. The cache type id is also used for cache management from the application server command line using the Commerce CLI. For example, bin/magento cache:status config displays the current status of the Configuration cache.

NOTE
Developers and system integrators can customize and extend the Commerce cache management system to support custom modules and integrations. For details, see Configure Caching in the Adobe Commerce Configuration Guide.

Cache list detail

Cache
Description
Cache Tag
Cache id
Configuration
Commerce collects XML configuration from all modules, merges it, and saves the merged result to the cache.
System - config.xml, local.xml
Module - config.xml

This cache also contains store-specific settings stored in the file system and database. Clean or flush this cache type after modifying configuration files.
CONFIG
config
Layouts
Compiled page layouts, that is, the layout components from all components. Clean or flush this cache type after modifying layout files.
LAYOUT_GENERAL_CACHE_TAG
layout
Blocks HTML output
HTML page fragments per block. Clean or flush this cache type after modifying the view layer.
BLOCK_HTML
block_html
Collections Data
Collection data files that store the results of database queries. If necessary, Commerce cleans up this cache automatically, but third-party developers can put any data in any segment of the cache. Clean or flush this cache type if your custom module uses logic that results in cache entries that Commerce cannot clean.
COLLECTION_DATA
collections
Reflections
Clears API interface reflection data, that typically is generated during runtime.
REFLECTION
reflection
Database DDL operations
Database schema. If necessary, Commerce cleans up this cache automatically, but third-party developers can put any data in any segment of the cache. Clean or flush this cache type after you make custom changes to the database schema. (In other words, these are updates that Commerce does not make itself.) One way to update the database schema automatically is using the magento setupupgrade command.
DB_DDL
db_ddl
Compiled Config
Results of code compilation.
COMPILED_CONFIG
compiled_config
Webhooks Response Cache
Caches responses to webhook requests. For more information, see the Webhooks Guide in the Commerce developer documentation.
WEBHOOKS_RESPONSE
webhooks_response
EAV types and attributes
Caches entity types declaration for metadata related to Entity Attribute Value (EAV) attributes. Attributes include store labels, links to related PHP code, attribute rendering, search settings, and so on. You typically do not need to clean or flush this cache type.
EAV
eav
Customer Notification
Temporary notifications that appear in the user interface.
CUSTOMER_NOTIFICATION
customer_notification
GraphQL Query Resolver Results
Caches the results from GraphQL query resolvers for customer, CMS page, CMS block, and product media gallery entities. Keep this cache enabled to improve GraphQL performance.
GRAPHQL_QUERY_RESOLVER_RESULT
graphql_query_resolver_result
Integrations Configuration
Integration configuration file. Clean or flush this cache after changing or adding integrations.
INTEGRATION
config_integration
Integrations API Configuration
Compiled integration APIs configuration for store integrations.
INTEGRATION_API_CONFIG
config_integration_api
Admin UI SDK Cache
Caches customizations to the Admin. See Admin configuration and testing in the Admin UI SDK Guide.
ADMIN_UI_SDK
admin_ui_sdk
Page Cache
Full page caching.
FPC
full_page
Target Rule
Target Rule Index
TARGET_RULE
target_rule
Web Services Configuration
Caching the Web API structure.
WEBSERVICE
config_webservice
Translations
Translation files.
TRANSLATE
translate

Full-page caching

Adobe Commerce and Magento Open Source use full-page caching on the server to display category, product, and CMS pages quickly. Full-page caching improves response time and reduces the load on the server. Without caching, each page might need to run blocks of code and retrieve information from the database. However, with full-page caching enabled, a fully generated page can be read directly from the cache.

NOTE
It is recommended that Varnish Cache be used only in a production environment.

Cached content can be used to process the requests from similar types of visits. As a result, pages shown to a casual visitor might differ from pages shown to a customer. For the purposes of caching, each visit is one of three types:

  • Non-sessioned - During a non-sessioned visit, the shopper views pages, but does not interact with the store. The system caches the content of each page viewed and serves them to other non-sessioned shoppers.
  • Sessioned - During a sessioned visit, shoppers who interact with the store are assigned a session ID. Interactions include activities such as comparing products or adding products to the shopping cart. Cached pages that are generated during the session are used only by that shopper during the session.
  • Customer - Customer sessions are created for customers that log in and shop using their registered account. During the session, customers can be presented with special offers, promotions, and prices based on their assigned customer group.

For technical information, see Configure and Use Varnish and Use Redis for the Commerce page and default cache in the Configuration Guide.

To configure the full-page cache:

  1. On the Admin sidebar, go to Stores > Settings > Configuration.

  2. In the left panel, expand Advanced and choose System.

  3. Expand Expansion selector the Full Page Cache section.

    Advanced configuration - full page cache {width="600" modal="regular"}

  4. Set Caching Application to one of the following:

    • Built-in Application
    • Varnish Caching

  5. To set the timeout for the page cache, enter the TTL for public content. (The default value is 86400)

  6. To specify the maximum number of layout handles to process on the {BASE-URL}/page_cache/block/esi HTTP endpoint, enter the Handles param size. Restricting the size can improve security and performance. (The default value is 100)

  7. If using Varnish, complete the Varnish Configuration section as follows:

    • Access list - Enter the IP addresses that can purge the Varnish configuration to generate a config file. Separate multiple entries with a comma. The default value is localhost.

    • Backend host - Enter the IP address of the backend host that generates config files. The default value is localhost.

    • Backend port - Identify the backend port that is used to generate config files. The default value is: 8080.

    • Grace period - Specify the number of seconds to use as a grace period to generate config files. See Advanced Varnish configuration in the Configuration Guide.

    • To export the configuration as a varnish.vcl file, click the button for the version of Varnish that you use.

    Advance configuration - full page cache varnish {width="600" modal="regular"}

  8. When complete, click  Save Config.

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