The Node Key module generate a unique key for every node.
This key can be used to load an node without relying on its id.
Drupal 9.x.
Install this module as usual. Please see https://www.drupal.org/docs/extending-drupal/installing-modules
Global module settings can be found at admin/config/nodekey.
// Get the url of a node
$url = NodeKeyEntity::url('my_node_key');
// Get a node entity
$node = NodeKeyEntity::load('my_node_key');
// Create a new key
$nodekey = NodeKeyEntity::create($node);
// theme suggestions
page--'my_node_key'
node--'my_node_key'
You can find the list of all created keys at /admin/config/nodekey/list.
This module currently does not allow edition, but feel free to edit the node_nodekey table in your database (just make sure taht there are no duplicates).