+1. This will help to, 1. improve performance 2. Avoid trivial deadlocks. 3. Enforces Data consistency.
Cheers, Ruwan On Mon, Jul 3, 2017 at 1:04 PM, Johann Nallathamby <[email protected]> wrote: > Hi All, > > Currently the IdentityEventHandler architecture doesn't use any special > design technique to access/modify (identity and non-identity) claims. Also > each handler is self-contained and is expected to work independent from > other handlers. Both of these reasons are causing performance issues due to > the fact that each handler goes to the database layer and does small > transactions to retrieve/store few claims. In some cases the same claim > might even be accessed/modified by multiple handlers, not knowing the fact > that it may have been already loaded/modified by a previous handler. > > Due to this recently we are seeing some performance issues in our lab > tests. If we don't need some of those handlers in the system, we can > disable them and see some performance improvement. But in the case all the > handlers are needed we don't seem to have any other option. > > I believe the Unit-Of-Work pattern can address this issue because of the > following features. > > 1. It maintains lists of business objects in-memory which have been > changed (inserted, updated, or deleted) during a transaction. > 2. Once the transaction is completed, all these updates are sent as > one big unit of work to be persisted physically in a database in one go. > > What do you guys think? We need to have a wider discussion on how best to > design and implement this, but I think the requirement is strong enough > that we may need to prioritize this for one of the upcoming major releases. > > Thanks & Regards, > Johann. > > -- > > *Johann Dilantha Nallathamby* > Senior Technical Lead - WSO2 Identity Server > Governance Technologies Team > WSO2, Inc. > lean.enterprise.middleware > > Mobile - *+94777776950* > Blog - *http://nallaa.wordpress.com <http://nallaa.wordpress.com>* > -- *Ruwan Abeykoon* *Associate Director/Architect**,* *WSO2, Inc. http://wso2.com <https://wso2.com/signature> * *lean.enterprise.middleware.*
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