Clear cache in Drupal many ways. Here is a guide to some quick ways to clear the cache in Drupal, and it is correct up to the current version which is Drupal 10
Admin UI
Navigate to /admin/config/development/performance
Then click button "Clear all caches"
Programmatically using PHP
drupal_flush_all_caches();
Use Drush tool
Open terminal and run command
drush cache-rebuild
//or you can use
drush cr
update.php
Run update.php by browser "example.com/update.php" is other way of clearning the cache
Use SQL
Delete all data inside tables that start with prefix table + "cache_" like this
TRUNCATE devwk_cache_config;
TRUNCATE devwk_cache_container;
TRUNCATE devwk_cache_data;
TRUNCATE devwk_cache_default;
TRUNCATE devwk_cache_discovery;
TRUNCATE devwk_cache_dynamic_page_cache;
TRUNCATE devwk_cache_entity;
TRUNCATE devwk_cache_menu;
TRUNCATE devwk_cache_render;
TRUNCATE devwk_cache_toolbar;
Get the prefix table in the file setting.php