I this context - I'd find it very useful if someone evaluated memcached (http://www.danga.com/memcached/) and compared it to other methods (with different kernel versions, because its performance varies greatly depending on the availability of some I/O mechanisms). Looks like a good way of sharing data to me.
I am in the process of writing an article about data sharing which covers memcached. However, keep in mind that it is limited in the same way that all the others are, i.e. it can't share variables without serializing them first.
- Perrin
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