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Recent Posts

Introduction to Clustered Singleton

22 Jun 2018

In a clustered environment, it is sometimes necessary to limit to one instance of an EJB or CDI bean for an entire cluster.

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Setting Up Cache JPA Coordination with the Payara Platform using EclipseLink and JMS/Hazelcast

21 Jun 2018

When it comes to clustering and distributed computing performance, some of the challenges you have to overcome involve cache invalidation and coordination. Fortunately, both Payara Server and Payara Micro come with EclipseLink, which supports cache coordination and invalidation out of the box....

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Resolving Library Conflicts with Class Whitelisting

12 Jul 2017

Many applications, especially complex legacy ones that are packaged with a large number of libraries, may contain libraries that are also shipped with Payara Server (like Google Guava or Jackson for example). These types of conflicts can be very hard to track down and solve. Starting from the...

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Enhanced EJB Pool Controls in Payara Server

04 May 2017

In prior releases of Payara Server, it was not possible to control the maximum number of concurrent Stateless EJB instances in Payara Server. It was, however, possible to control the number of pooled Stateless EJB instances, as well as concurrent MDB instances. These features were available in...

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Payara Server Rolling Upgrades

08 Sep 2016

Any project, large or small, would ultimately like to follow industry best practices, such as continuous deployment.  In order to support this, applications must be deployed early and often.  This, in turn, triggers downtime and the users get affected by it because they could be logged out of...

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