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Today’s high-traffic web sites must implement performance-boosting measures that reduce data processing and reduce load on the database, while increasing the speed of content delivery. One such method is the use of a cache to temporarily store whole pages, database recordsets, large objects, and sessions. While many caching mechanisms exist, memcached provides one of the fastest and easiest-to-use caching servers. Coupling memcached with the alternative PHP cache (APC) can greatly improve performance by reducing data processing time. In this talk, Ben Ramsey covers memcached and the pecl/memcached and pecl/apc extensions for PHP, exploring caching strategies, a variety of configuration options to fine-tune your caching solution, and discusses when it may be appropriate to use memcached vs. APC to cache objects or data.