n Disable cache for a block in Drupal 8 | CodimTh

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On . By CodimTh

Code snippet that can be used to disable caching for a block in Drupal 8.

use $vars['#cache']['max-age'] = 0 to stop  block being cache in drupal 8.

 * Implements hook_preprocess_HOOK()
function mytheme_preprocess_block(&$vars) {
  if($vars['derivative_plugin_id'] == 'block-id-name') {
    $vars['#cache']['max-age'] = 0;

for custom Block you can use getCacheMaxAge() method like this:

class MyModuleBlock extends BlockBase {
   * {@inheritdoc}
  public function build() {

   * @return int
  public function getCacheMaxAge() {
    return 0;


Also you can use \Drupal::service('page_cache_kill_switch')->trigger(); to disable the cache for anonymous users and all others too.


function fest_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
     if ($form_id == "node_something_form") {
           	//disable the form cache for anonymous users and all others too

Riadh Rahmi

Senior Web Developer PHP/Drupal & Laravel

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

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