
Magento 2 Cookbook
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Redis may be one of the best improvements since we used Memcache(d) or Alternative PHP Cache (APC). For the last couple of years, Redis is available in Magento 1 and has a big performance benefit.
What is Redis and why is it important for Magento? Well, Redis is not new; its initial release dates to the beginning of 2009—almost as young as Magento 1. Redis is a key-value storage database that stores the data in-memory of your web server. Besides this, the in-memory caches are fast and also have a persistence feature that is really important when a server reboots. All caches are not flushed during a reboot and are available in-memory when the web server is up again.
In the beginning of the Magento 1 area, we used Memcache(d) or APC, which worked very well but not as well as Redis. In Magento 1, Redis was used for a backend cache and session storage most of the time. Some websites also used it as a Full Page Cache (FPC) storage.
One other great advantage...
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