You can make a field for the article that represents likes, then make a route like /api/article/:id/like that activates a controller that +1 that like field in article. In the controller you use the Entity Service API to update the article.
You can make a field for the article that represents likes, then make a route like /api/article/:id/like that activates a controller that +1 that like field in article. In the controller you use the Entity Service API to update the article.