data replication

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data replication

data replication

2004-07-12 - By newsreader

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Reply: 1 2 3 4 5 6 7

koala.gnu@(protected) wrote:

>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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Sounds like a job for JMS!

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