Out of the box Magento supports a few cache backend thanks to the use of
Zend Framework Cache including File System, APC and Memcached. Every cache backend comes with it’s ow set of advantages and disadvantages scalability & tagging being a pain on most of them. Enter
Redis, as of Magento CE 1.8 and EE 1.13 the integration between Redis and Magento is already included.
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