data replication

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data replication

data replication

2004-07-12 - By koala.gnu@(protected)

Back

Reply: 1 2 3 4 5 6 7

Hi all,

some questions.

1) Suppose I have a J2EE application with

WEB Tier
EJB Tier
Database Tier

I want to use clustering for solve scalability problem but I do not know
who should be responsible for data replication: EJB or DB?

I mean if on two server I configure EJB layers in clustering, does this
allow data replication?
If so, the entity bean should be defined remote or local. Currently I use
only local interface since session bean access to them on same JVM.

2) I use sequence bean pattern for id generation, but how to implement it
in a clustered environment. Any link?

3) again. I have some periodical tasks (call them services) and I want execute
them only on one server. It could be a good choice distribute service execution
on server. What pattern I should use?

Thanks.

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