Description: Memcached is a high-performance, distributed memory object caching system by maintaining a unified in memory of the huge hash tables, it can be used to store data in a variety of formats, including images, video, files, and database retrieval results, etc. Originally developed to speed up the access speed of LiveJournal, it was later adopted by many large websites. At first, the author might have written it to improve the dynamic web application, to alleviate the pressure of database retrieval, to do this caching system. It is a kind of distributed cache, namely can allow different on a host of multiple users to access the cache system at the same time, this method not only solves the Shared memory is only the disadvantages of single machine, but also solve the pressure of database retrieval, and the biggest advantage is to improve the speed of access to get the data! Based on memcached author's understanding and solution to distributed cache.
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