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On . By CodimTh
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in this tuto, I'll show you the methods for clearing or rebuilding Drupal 8 cache programmatically  and using admin UI, update.php, drush, SQL, ...

Programmatically using PHP

juste use this method where you want to clear the cache:

drupal_flush_all_caches();

there is also other methods to clear caches using:

By Admin UI

Navigate to /admin/config/development/performance and ​click the button "Clear all caches".

By Drush

drush cache-rebuild
//or you can use 
drush cr

By update.php

Run update.php (/update.php) is another way of clearing the cache.

By SQL

Delete all data inside  tables that start with "cache_" like this:
TRUNCATE cache_config;
TRUNCATE cache_container;
TRUNCATE cache_data;
TRUNCATE cache_default;
TRUNCATE cache_discovery;
TRUNCATE cache_dynamic_page_cache;
TRUNCATE cache_entity;
TRUNCATE cache_menu;
TRUNCATE cache_render;
TRUNCATE cache_toolbar;

 

Other Methods:

$variables['#cache']['max-age'] = 0;

\Drupal::service('page_cache_kill_switch')->trigger();

cache_clear_all() // For Drupal-7

drupal_flush_all_caches() // For Drupal-8

 

If you want to clear specific cache like render cache then you can run the following code:

\Drupal::service('cache.render')->invalidateAll();

 

If you want to clear specific cache like route cache then you can run the following code:

\Drupal::service("router.builder")->rebuild();

 

 

Riadh Rahmi

Senior Web Developer (Drupal & Laravel)

I am a senior web developer, I have experience in planning and developing large scale dynamic web applications especially in Drupal, Laravel.

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