Many reverse proxies use the URL as a key for cached url records but in Magento the URLs are not unique enough to allow it, which can cause problems of: $page->setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, max-age=0', true) We are using HTTP headers to control various page caches (varnish, fastly, built-in php cache) You can also disable the cache of a page by adding parameters to the header of a request from a Magento controller (Varnish only): Special care with this directive, for obvious reasons. To make a page non-cacheable, it is enough for one of its blocks to have the following directive in the cacheable xml = “false”. Taking into account that at the server level is where we manage the public content cache, what can we do to manage page variations or how can we show different content depending on groups of clients, user segments … Disable the cache on a page Private: On the client side (browser) is where we store the private information (Customer data, shopping cart, wish list …).Public: On the server side is where we store the public information of our stores (which is the same for all visits).To address these challenges, Magento can distinguish between two types of content: However, most Magento websites generate dynamic and personalized “private” content that should only be served to a user, which presents unique caching challenges. Inverse proxies serve “public” or shared content to more than one user. File system (No need to do anything to use file-based caching)Ĭacheable and non-cacheable terms are used to define when a page has to be cached and when it is not.However Magento recommends the use of Varnish for production environments, which can store the cache files in the following systems: A reverse proxy acts as an intermediary between visitors and your application and can reduce the load on your server. The Magento cache library contains a simple reverse PHP proxy that enables page caching (FPC). They provide the possibility to reduce the resources used by the servers and serve the content to the client in a faster way.īasically what we do with the cache is to store the response of a page requested by a client so that the next time someone asks us we show it faster. ![]() Generally speaking there are two methods of caching content: You notice that we use the function getContacts() created in the block just above.ĭisplay your page (do not forget to empty your cache) and you should normally see your contact table displayed on the magento front office.The cache is the most effective mechanism we have to improve a page performance. We will then edit our template file app/code/Pfay/Contacts/view/frontend/templates/test_index.phtml as follows: ![]() Show the collection items in the template $collection = $this->_contact->getCollection() We will now modify our block so that it automatically takes a contact type object when it is created that will allow us to retrieve its collection and pass it to our template.Įdit your Contactslist.php file like this: ![]() Here magento display our block using the class Pfay\Contacts\Block\Contactslist for the "logical" part and the Pfay_Contacts::test_index.phtml template ie app/code/Pfay/Contacts/view/frontend/templates/test_index.phtml for the "view" (template) part.Įdit our magento2 block to get the collection It knows the information to display for our action thanks to the directives contained in this layout file. Magento will fetch the file app/code/Pfay/Contacts/view/frontend/layout/contacts_test_index.xml. In this action it loads the layout and display it. Magento2 will call our action app/code/Pfay/Contacts/Controller/Test/Index.php : Remember what we saw in the previous tutorials. Today we will see how to get a collection and to display it in a magento2 template.
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