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Firephinx

Fun Fact: Memcached was first created by the founder of LiveJournal and allows a very large hash table to be distributed across multiple machines in their RAM. For more information, read here.

sadkins

Instead of having the web servers communicate with the cache, we could also cache the results to common requests so that less requests get sent to the web servers. This would be efficient only if the answer to common requests is small and consistent

hdd

Memcached serves as a request response buffer which instead of being computed for a response, the responses are memoized and are sent back on further repeat requests. So this is a common way of implementing caching for frequently accessed pages on major websites. Usually icons in a shopping website like Amazon are memcached

koala

Amazon Web Services has a "built-in" cache ElastiCache using redis or memcached (https://aws.amazon.com/elasticache/) that can be easily integrated with AWS instances.