Hello
Just for any one that is interested I have been working on a project
using the Win 32 port of Memcached
(http://jehiah.cz/projects/memcached-win32/) and the EnyimMemcached
client as a global cache manager with some very impressive results. The
application is very database intensive so with caching switched off we
could get the application 1000 concurrent users and the CPU on the
database servers would get to 100% and we would would see and
exponential increase in load times (I should note that under load with
just the database load times were quite slow any way 2-5 seconds).
With memcached started across our 4 web servers each with 1gb of
memcached memory we can run at 3,500 concurrent users and we see our
database load halved and an average load time of 0.5 seconds per web
page. The only traffic to the database was the initial cache of user
data and then the high concurrency of inserted data to the database but
the loading testing consultant was considerably impressed by what
memcached could deal with.
We had a license for 5,000 concurrent users for loading testing but we
had network work issues causing a bottle neck for through put so my boss
now has a nice order for a switch and new load balancer instead having
to improve code and database performance :->
Thanks to every one involved in the memcached project it has certainly
helped improve the performance of our applications.
Cheers
Ollie Castle
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