What is about performance?

[Michael Sivolobov]

Why should I use PHPCR instead of Mongo DB? Is there any performance issue or what? I don't need versioning of my documents. What would be the best for me and why?

[David Buchmann]

hi michael,

welcome to this mailing list.

the interest of the php content repository is to provide a vendor
neutral api to access content. you could implement phpcr with mongodb as
storage (somebody actually started doing that but abandoned a while ago
[1]). when using phpcr, you can switch backends and for example develop
with a sqlite database locally but use jackrabbit (or mongodb if that
connector gets finished by somebody) in the production system.

the other difference between phpcr and raw mongo / couch / whatever is
expressivness. phpcr provides a tree oriented data model. the phpcr
implementation handles all the tree things for you, and the application
can just rely on the tree being consistent. for content management
systems, trees are a natural data structure. raw mongo/couch are not
good at trees. you can do nested documents, but then you can not access
children directly. or you can put meta information somewhere to emulate
the tree on top of them - and then you are implementing your own
alternative to phpcr which is not a sustainable approach.

when you ask about raw performance of reading and writing data, i would
expect mongodb to be more performant than any of the phpcr
implementations available. with jackalope-jackrabbit, you can scale
pretty decently however, load balancing the http based protocol to
several jackrabbits and do caching on your database layer.

cheers,david

[1] https://github.com/jackalope/jackalope-mongodb/

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