… may be performance bottleneck, assuming PHP opcode cache is not used. Also different applications may have different cache hit ratios which also needs… some syncronization contention while accessing shared memory cache which does not happen in this case. File cache really does great, even though it…

… faster as a straight PHP call on the memory cache, but you can only access the memory cache from the local PHP process.  I have… access the cache from a central location, which with memcached is possible but not with APC as it is PHP specific.  For more information on performance and advice on when various caching methods may be more…

… (instead of doing it from PHP). The other case when caching in files can be very helpful is caching data long term – ie… objects cached and they are stored on the storage or network rather than local memory. This approach works very well if you cache is structured so each update removes only one object from the cache. Cache Update…

… caching things locally if you have many web servers. MemcacheD is relatively slow but distributed and so you do not waste memory by caching same item in a few places, it is also… you need only one access to bring item into the cache, not access for each of web servers. (tags: apc cache php) [...]

… php api for it are available. Second – I do not think it makes much sense. Memcached should be used for _distributed_ memory caching. If you’re running it on localhost you’re using wrong solution. Correctly implemented shared memory cache will be faster…