ejb bean实例池jboss EAP 6.1

Question

在我们的项目中，我们将从JBoss5迁移到Jboss EAP6.1。当我在研究Jboss EAP6.1中要使用的配置时，我偶然发现了以下内容：

<pools>
<bean-instance-pools>
<strict-max-pool name="slsb-strict-max-pool" max-pool-size="20" instance-acquisition-timeout="1" instance-acquisitiontimeout-unit="MILLISECONDS"/>
<strict-max-pool name="mdb-strict-max-pool" max-pool-size="20" instance-acquisition-timeout="1" instance-acquisitiontimeout-unit="MILLISECONDS"/>
</bean-instance-pools>
</pools>

我不清楚最大池大小的争论。这个限制是不是每个部署在JBoss上的无状态EJB bean的20个实例或者pool最多只能达到20个实例，而不考虑无状态EJB bean的数量。

Answer 1

我不同意EIS的观点。下面是Wildfly 8.2.1 StatelessSessionComponent.java的代码

public StatelessSessionComponent(final StatelessSessionComponentCreateService slsbComponentCreateService) {
    super(slsbComponentCreateService);

    StatelessObjectFactory<StatelessSessionComponentInstance> factory = new StatelessObjectFactory<StatelessSessionComponentInstance>() {
        @Override
        public StatelessSessionComponentInstance create() {
            return (StatelessSessionComponentInstance) createInstance();
        }

        @Override
        public void destroy(StatelessSessionComponentInstance obj) {
            obj.destroy();
        }
    };
    final PoolConfig poolConfig = slsbComponentCreateService.getPoolConfig();
    if (poolConfig == null) {
        ROOT_LOGGER.debug("Pooling is disabled for Stateless EJB " + slsbComponentCreateService.getComponentName());
        this.pool = null;
        this.poolName = null;
    } else {
        ROOT_LOGGER.debug("Using pool config " + poolConfig + " to create pool for Stateless EJB " + slsbComponentCreateService.getComponentName());
        this.pool = poolConfig.createPool(factory);
        this.poolName = poolConfig.getPoolName();
    }

    this.timeoutMethod = slsbComponentCreateService.getTimeoutMethod();
    this.weakAffinity = slsbComponentCreateService.getWeakAffinity();
}

正如我所看到的，pool是非静态字段，是为每种类型的组件（ejb类）创建的。