java - Strategy for accessing data in multi-tenant environment with Spring and Hibernate -

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i working in multi-tenant environment data can accessed 10 different datasources (and entitymanagers) webapplication (rest) frontend.

the entitymanager used depending on url parameter in rest api, ex. api/orders/1/1000003.

i need use entitymanager "1" fetch data. @ moment using method in repository layer call setdistrict(1), before creating hibernate session , creating query via hibernate criteria.

all working fine, worried fact method need synchronized avoid getting data wrong entitymanager. when synchronize repository method worried performance horrible..

what strategy implementing multi-tenant access performance , correct data returned under heavy load well?

thanks advice.

the sessionfactory of hibernate allows use tenancy behavior:

  • schema correlates separate schema approach. error attempt open session without tenant identifier using strategy. additionally, org.hibernate.service.jdbc.connections.spi.multitenantconnectionprovider must specified.

  • database correlates separate database approach. error attempt open session without tenant identifier using strategy. additionally, org.hibernate.service.jdbc.connections.spi.multitenantconnectionprovider must specified.

  • discriminator correlates partitioned (discriminator) approach. error attempt open session without tenant identifier using strategy. strategy not yet implemented in hibernate of 4.0 , 4.1. support planned 5.0.

in case think need schema or database , have implement multitenantconnectionprovider (source).

/**  * simplisitc implementation illustration purposes supporting 2 hard coded providers (pools) , leveraging  * support class {@link org.hibernate.service.jdbc.connections.spi.abstractmultitenantconnectionprovider}  */ public class multitenantconnectionproviderimpl extends abstractmultitenantconnectionprovider {     private final connectionprovider acmeprovider = connectionproviderutils.buildconnectionprovider( "acme" );     private final connectionprovider jbossprovider = connectionproviderutils.buildconnectionprovider( "jboss" );      @override     protected connectionprovider getanyconnectionprovider() {         return acmeprovider;     }      @override     protected connectionprovider selectconnectionprovider(string tenantidentifier) {         if ( "acme".equals( tenantidentifier ) ) {             return acmeprovider;         }         else if ( "jboss".equals( tenantidentifier ) ) {             return jbossprovider;         }         throw new hibernateexception( "unknown tenant identifier" );     } }

for more details see linked documentation.


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