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Wednesday 03 June 2009 12:37:02 am
Hy,
it would be a simple thing to try out partitioning.
http://dev.mysql.com/doc/refman/5.1/en/partitioning-overview.html
instead of storing millions of ezcontentobject_attributes in one physical table, with partitioning you are able to partition the table into 'virtually' multiple ones, each one holding a subset of all the data.
Nothing has to be changed on the ezpublish-side, as the manipulated/partitioned table looks like any other table, but the (ie. mysql) DBMS takes care of managing the data... pretty complex thing, try to read in. But shurely will make things a bit faster :)
Partitioning: store ezco_attrib from id a to c in part A, from id d to e in part B ... and so on.
It's like partitioning a harddisk... ---------- The second thing you could try is your mentioned sharding. Sharding has to be implemented in the model part of mvc. So ezpublish needs to me modified. This is a more complex part and nearly not possible, as it breaks a lot of code/logic... ----------
A third solution would be to use clustering-feature or master-slave feature.
Master-slave feature is simple to activate as it seems to be active-code in ezpublish. one db-server is used for read-operations, the other one for write-operations which get replicated on the 'read-only'-server. But you seemed to be interested in sharding - so solution A is an option (partititoning) and the sharding feature itself is nice but very complicated to implement on such a complex system as ezpublish. Also remember that ezP already exists. Sharding is more easy to implement when beginning a new project. Thus you don't have to take care for any upgrades/downgrade issues... One thing that came in my mind right now: memcache. that is such a thing that would significantly improve performance, but also needs alteration of ezPublish-models (persistent db layer)... just my 2 cents. if you intend to write such modifications, let me know. I'm interested in it (not needing it, but extremely interested how you'll solve it) Christian
Hannover, Germany
eZ-Certified http://auth.ez.no/certification/verify/395613
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