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

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# Exec as root
docker-compose exec --user root -T php sh -c "chown -R www-data:www-data ."

# Exec as regular
docker-compose exec -T php sh -c "composer --version"

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sudo certbot certonly --manual --preferred-challenges=http

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# Start an app (in background) based on docker-compose.yml:
docker-compose up -d

# List of running containers (including names):
docker-compose ps

# Check logs:
docker-compose logs [CONTAINER_NAME]

# Stop an app:

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rsync -a ~/dir1 username@remote_host:destination_directory

rsync -a username@remote_host:/home/username/dir1 place_to_sync_on_local_machine

scp -r eurocockpit.be:/home/euroco1q/eurocockpit.be/db/eurocockpit.be-master-2019-01-05-0731.sql.gz ~/www

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// PHP $_POST
$name = $_POST['name']; // form param

// Drupal 8 $_POST
$name = \Drupal::request()->request->get('name'); // form param

// Drupal 8 $_GET
$query = \Drupal::request()->query->get('name');

// Get HOST

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Cache keys
Cache keys are unique identifiers for a specific variation of a thing that is being cached. This provides the cache API with the information it needs to be able to retrieve the specific item from whatever storage is being used for cached data.

When rendering a node (data being displayed) in the teaser view mode (configuration indicating a specific representation), the cache keys would be e.g. ['node', 5, 'teaser']


Cache tags
Cache tags vary the cache based on the data that was used to build the element. For example, entities, users, or configuration.

Using cache tags you could associate some cached data with a specific node. When that node is edited, and the content of it changes, the related cached data becomes outdated and no longer valid.

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stages:
  - deploy

dev-deployment:
  stage: deploy
  script:
    -  ssh HOST 'bash -s' < dev-deployment.sh
  only:
    - develop

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<?php

namespace Drupal\[custom_module]\Plugin\rest\resource;

use Drupal\rest\Plugin\ResourceBase;
use Drupal\rest\ResourceResponse;
use Drupal\user\UserStorageInterface;
use Psr\Log\LoggerInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;