Use Redis for default cache
Magento provides command line options to configure Redis page and default caching. Although you can configure caching by editing the <Magento install dir>app/etc/env.php file, using the command line is the recommended method, especially for initial configurations. The command line provides validation, ensuring the configuration is syntactically correct.
You must install Redis before continuing.
Configure Redis default caching
Run the setup:config:set command and specify parameters that specific to Redis default caching.
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bin/magento setup:config:set --cache-backend=redis --cache-backend-redis-<parameter_name>=<parameter_value>...
where
--cache-backend=redis enables the Redis default caching. If this feature has already been enabled, omit this parameter.
--cache-backend-redis-<parameter_name>=<parameter_value> is a list of key/value pairs that configure the default caching:
| Command line parameter | Parameter | Meaning | Default value |
|---|---|---|---|
| cache-backend-redis-server | server | Fully qualified hostname, IP address, or an absolute path to a UNIX socket. The default value of 127.0.0.1 indicates Redis is installed on the Magento server. | 127.0.0.1 |
| cache-backend-redis-port | port | Redis server listen port | 6379 |
| cache-backend-redis-db | database | Required if you use Redis for both the default and full-page cache. You must specify the database number of one of the caches; the other cache uses 0 by default. Important: If you use Redis for more than one type of caching, the database numbers must be different. It is recommended that you assign the default caching database number to 0, the page caching database number to 1, and the session storage database number to 2. |
0 |
| cache-backend-redis-password | password | Configuring a Redis password enables one of its built-in security features: the auth command, which requires clients to authenticate to access the database. The password is configured directly in Redis’s configuration file, /etc/redis/redis.conf, which you should still have open from the previous step. |
Example command
The following example enables Redis default caching, sets the host to 127.0.0.1 and assigns the database number to 0. Redis uses default values for all other parameters.
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bin/magento setup:config:set --cache-backend=redis --cache-backend-redis-server=127.0.0.1 --cache-backend-redis-db=0
Configure Redis page caching
To configure Redis page caching on Magento, run the setup:config:set command with additional parameters.
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bin/magento setup:config:set --page-cache=redis --page-cache-redis-<parameter_name>=<parameter_value>...
where
--page-cache=redis enables Redis page caching. If this feature has already been enabled, omit this parameter.
--page-cache-redis-<parameter_name>=<parameter_value> is a list of parameter/value pairs that configure page caching:
| Command line parameter | Parameter | Meaning | Default value |
|---|---|---|---|
| page-cache-redis-server | server | Fully qualified hostname, IP address, or an absolute path to a UNIX socket. The default value of 127.0.0.1 indicates Redis is installed on the Magento server. | 127.0.0.1 |
| page-cache-redis-port | port | Redis server listen port | 6379 |
| page-cache-redis-db | database | Required if you use Redis for both the default and full page cache. You must specify the database number of one of the caches; the other cache uses 0 by default. Important: If you use Redis for more than one type of caching, the database numbers must be different. It is recommended that you assign the default caching database number to 0, the page caching database number to 1, and the session storage database number to 2. |
0 |
| page-cache-redis-password | password | Configuring a Redis password enables one of its built-in security features: the auth command, which requires clients to authenticate to access the database. Configure the password within the Redis configuration file, /etc/redis/redis.conf. |
Example command
The following example enables Redis page caching, sets the host to 127.0.0.1 and assigns the database number to 1. All other parameters are set to the default value.
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bin/magento setup:config:set --page-cache=redis --page-cache-redis-server=127.0.0.1 --page-cache-redis-db=1
Results
As a result of the two example commands, Magento adds lines similar to the following to <Magento install dir>app/etc/env.php:
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'cache' => [
'frontend' => [
'default' => [
'backend' => 'Cm_Cache_Backend_Redis',
'backend_options' => [
'server' => '127.0.0.1',
'database' => '0',
'port' => '6379'
],
],
'page_cache' => [
'backend' => 'Cm_Cache_Backend_Redis',
'backend_options' => [
'server' => '127.0.0.1',
'port' => '6379',
'database' => '1',
'compress_data' => '0'
]
]
]
],
New Redis cache implementation
As of Magento 2.3.5, it is recommended to use the extended Redis cache implementation: \Magento\Framework\Cache\Backend\Redis.
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'cache' => [
'frontend' => [
'default' => [
'backend' => '\\Magento\\Framework\\Cache\\Backend\\Redis',
'backend_options' => [
'server' => '127.0.0.1',
'database' => '0',
'port' => '6379'
],
],
],
Redis preload feature
Since Magento stores a lot of configuration data in the Redis cache, we can preload data that is reused between pages.
Redis uses the pipeline in order to composite load requests.
Note that this feature works only with \Magento\Framework\Cache\Backend\Redis as the cache adapter.
Please note that keys such as SYSTEM_DEFAULT, DB_IS_UP_TO_DATE, GLOBAL_PLUGIN_LIST,and EAV_ENTITY_TYPES should include the database prefix.
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'cache' => [
'frontend' => [
'default' => [
'id_prefix' => '061_',
'backend' => '\\Magento\\Framework\\Cache\\Backend\\Redis',
'backend_options' => [
'server' => 'redis',
'database' => '0',
'port' => '6379',
'password' => '',
'compress_data' => '1',
'compression_lib' => '',
'preload_keys' => [
'061_EAV_ENTITY_TYPES',
'061_GLOBAL_PLUGIN_LIST',
'061_DB_IS_UP_TO_DATE',
'061_SYSTEM_DEFAULT',
],
]
],
'page_cache' => [
'id_prefix' => '061_'
]
]
]
When using the preload feature with the L2 cache, add the ‘:hash’ suffix to your keys:
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'preload_keys' => [
'061_EAV_ENTITY_TYPES:hash',
'061_GLOBAL_PLUGIN_LIST:hash',
'061_DB_IS_UP_TO_DATE:hash',
'061_SYSTEM_DEFAULT:hash',
],
Basic verification
To verify that Redis and Magento are working together, use the following commands:
Redis monitor command
In a command prompt on the server on which Redis is running, enter:
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redis-cli monitor
Refresh your storefront page and you’ll see output similar to the following.
Session storage
If you use Redis for session storage, you’ll see output similar to the following:
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1476824834.187250 [0 127.0.0.1:52353] "select" "0"
1476824834.187587 [0 127.0.0.1:52353] "hmget" "sess_sgmeh2k3t7obl2tsot3h2ss0p1" "data" "writes"
1476824834.187939 [0 127.0.0.1:52353] "expire" "sess_sgmeh2k3t7obl2tsot3h2ss0p1" "1200"
1476824834.257226 [0 127.0.0.1:52353] "select" "0"
1476824834.257239 [0 127.0.0.1:52353] "hmset" "sess_sgmeh2k3t7obl2tsot3h2ss0p1" "data" "_session_validator_data|a:4:{s:11:\"remote_addr\";s:12:\"10.235.34.14\";s:8:\"http_via\";s:0:\"\";s:20:\"http_x_forwarded_for\";s:0:\"\";s:15:\"http_user_agent\";s:115:\"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.143 Safari/537.36\";}_session_hosts|a:1:{s:12:\"10.235.32.10\";b:1;}admin|a:0:{}default|a:2:{s:9:\"_form_key\";s:16:\"e331ugBN7vRjGMgk\";s:12:\"visitor_data\";a:3:{s:13:\"last_visit_at\";s:19:\"2016-10-18 21:06:37\";s:10:\"session_id\";s:26:\"sgmeh2k3t7obl2tsot3h2ss0p1\";s:10:\"visitor_id\";s:1:\"9\";}}adminhtml|a:0:{}customer_base|a:1:{s:20:\"customer_segment_ids\";a:1:{i:1;a:0:{}}}checkout|a:0:{}" "lock" "0"
... more ...
Page caching
If you use Redis for page caching, you’ll see output similar to the following:
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1476826133.810090 [0 127.0.0.1:52366] "select" "1"
1476826133.816293 [0 127.0.0.1:52367] "select" "0"
1476826133.817461 [0 127.0.0.1:52367] "hget" "zc:k:ea6_GLOBAL__DICONFIG" "d"
1476826133.829666 [0 127.0.0.1:52367] "hget" "zc:k:ea6_DICONFIG049005964B465901F774DB9751971818" "d"
1476826133.837854 [0 127.0.0.1:52367] "hget" "zc:k:ea6_INTERCEPTION" "d"
1476826133.868374 [0 127.0.0.1:52368] "select" "1"
1476826133.869011 [0 127.0.0.1:52369] "select" "0"
1476826133.869601 [0 127.0.0.1:52369] "hget" "zc:k:ea6_DEFAULT_CONFIG_CACHE_DEFAULT__10__235__32__1080MAGENTO2" "d"
1476826133.872317 [0 127.0.0.1:52369] "hget" "zc:k:ea6_INITIAL_CONFIG" "d"
1476826133.879267 [0 127.0.0.1:52369] "hget" "zc:k:ea6_GLOBAL_PRIMARY_PLUGIN_LIST" "d"
1476826133.883312 [0 127.0.0.1:52369] "hget" "zc:k:ea6_GLOBAL__EVENT_CONFIG_CACHE" "d"
1476826133.898431 [0 127.0.0.1:52369] "hget" "zc:k:ea6_DB_PDO_MYSQL_DDL_STAGING_UPDATE_1" "d"
1476826133.898794 [0 127.0.0.1:52369] "hget" "zc:k:ea6_RESOLVED_STORES_D1BEFA03C79CA0B84ECC488DEA96BC68" "d"
1476826133.905738 [0 127.0.0.1:52369] "hget" "zc:k:ea6_DEFAULT_CONFIG_CACHE_STORE_DEFAULT_10__235__32__1080MAGENTO2" "d"
... more ...
1476826210.634998 [0 127.0.0.1:52439] "hmset" "zc:k:ea6_MVIEW_CONFIG" "d" "a:18:{s:19:\"design_config_dummy\";a:4:{s:7:\"view_id\";s:19:\"design_config_dummy\";s:12:\"action_class\";s:39:\"Magento\\Theme\\Model\\Indexer\\Mview\\Dummy\";s:5:\"group\";s:7:\"indexer\";s:13:\"subscriptions\";a:0:{}}s:14:\"customer_dummy\";a:4:{s:7:\"view_id\";s:14:\"customer_dummy\";s:12:\"action_class\";s:42:\"Magento\\Customer\\Model\\Indexer\\Mview\\Dummy\";s:5:\"group\";s:7:\"indexer\";s:13:\"subscriptions\";a:0:{}}s:13:\"cms_page_grid\";a:4:{s:7:\"view_id\";s:13:\"cms_page_grid\";s:12:\"action_class\";s:43:\"Magento\\Catalog\\Model\\Indexer\\Category\\Flat\";s:5:\"group\";s:7:\"indexer\";s:13:\"subscriptions\";a:1:{s:8:\"cms_page\";a:3:{s:4:\"name\";s:8:\"cms_page\";s:6:\"column\";s:7:\"page_id\";s:18:\"subscription_model\";N;}}}s:21:\"catalog_category_flat\";a:4:{s:7:\"view_id\";s:21:\"catalog_category_flat\";s:12:\"action_class\";s:43:\"Magento\\Catalog\\Model\\Indexer\\Category\\Flat\";s:5:\"group\";s:7:\"indexer\";s:13:\"subscriptions\";a:6:{s:23:\"catalog_category_entity\";a:3:{s:4:\"name\";s:23:\"catalog_category_entity\";s:6:\"column\";s:9:\"entity_id\";s:18:\"subscription_model\";N;}s:31:\"catalog_category_entity_decimal\";a:3:{s:4:\"name\";s:31:\"catalog_category_entity_decimal\";s:6:\"column\";s:9:\"entity_id\";s:18:\"subscription_model\";s:71:\"Magento\\CatalogStaging\\Model\\Mview\\View\\Category\\Attribute\\Subscription\";}s:27:\"catalog_category_entity_int\";a:3:{s:4:\"name\";s:27:\"catalog_category_entity_int\";s:6:\"column\";s:9:\"entity_id\";s:18:\"subscription_model\";s:71:\"Magento\\CatalogStaging\\Model\\Mview\\View\\Category\\Attribute\\Subscription\";}s:28:\"catalog_category_entity_text\";a:3:{s:4:\"name\";s:28:\"catalog_category_entity_text\";s:6:\"column\";s:9:\"entity_id\";s:18:\"subscription_model\";s:71:\"Magento\\CatalogStaging\\Model\\Mview\\View\\Category\\Attribute\\Subscription\";}s:31:\"catalog_category_entity_varchar\";a:3:{s:4:\"name\";s:31:\"catalog_category_entity_varchar\";s:6:\"column\";s:9:\"entity_id\";s:18:\"subscription_model\";s:71:\"Magento\\CatalogStaging\\Model\\Mview\\View\\Category\\Attribute\\Subscription\";}s:32:\"catalog_category_entity_datetime\";a:3:{s:4:\"name\";s:32:\"catalog_category_entity_datetime\";s:6:\"column\";s:9:\"entity_id\";s:18:\"subscription_model\";s:71:\"Magento\\CatalogStaging\\Model\\Mview\\View\\Category\\Attribute\\Subscription\";}}}s:24:\"catalog_category_product\";a:4:{s:7:\"view_id\";s:24:\"catalog_category_product\";s:12:\"action_class\";s:46:\"Magento\\Catalog\\Model\\Indexer\\Category\\Product\";s:5:\"group\";s:7:\"indexer\";s:13:\"subscriptions\";a:2:{s:23:\"catalog_category_entity\";a:3:{s:4:\"name\";s:23:\"catalog_category_entity\";s:6:\"column\"
... more ...
Inspecting compressed data
To inspect compressed Session data and Page Cache, the RESP.app supports the automatic decompression of Magento 2 Session and Page cache and displays PHP session data in a human-readable form.
Redis ping command
Enter the following command:
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redis-cli ping
PONG should be the response.
If both commands succeeded, Redis is set up properly.