Are we going to insert whole message or as chunks On 18 Jul 2014 18:06, "Asitha Nanayakkara" <asi...@wso2.com> wrote:
> Hi, > > Following is the RDBMS design for WSO2 MB 3.0.0 > > Messages model > > Message metadata model > > > > Following are the concerns came across in the discussion > > *- Why we use reference counting for message meta data?* > > Reference counting is needed to delete topic messages from the database > reliably in a cluster deployment > > *- How to manage a large tables like Messages table?* > > for Messages table use database partitioning > > For Metadata queries there will be no SQL joins, hence even if the table > would grow large that won't be an issue. > > Inserts and delete operation can be done as batch operations. > > *- Following option to save metadata was rejected due to following reasons* > > > > In the above design MB instance will create Node_Queue tables and > Topic_Node_Queue > tables when each node connects to a cluster. This design was rejected due > to following reasons. > It's DB admins tasks to create and delete tables. MB should not modify > schema when joining to the cluster. There will be instances where MB users > might not have privileges to create tables. > > *- Supporting several SQL implementations.* > > Since we are using simple SQL operations those will not become an issue. > > > > > Thanks > -- > *Asitha Nanayakkara* > Software Engineer > WSO2, Inc. http://wso2.com/ > Mob: + 94 77 85 30 682 > > > _______________________________________________ > Architecture mailing list > Architecture@wso2.org > https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture > >
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