title: How to fix OOM exception for my apache ignite 2.7.0?
body: <p>We got several times of OOM exceptions for our apache ignite 2.7.0, which is deploy by docker.</p>
  
  <h2>I found this log message:</h2>
  
  <h2>Message queue limit is set to 0 which may lead to potential OOMEs when running cache operations in FULL ASYNC or PRIMARY_SYNC modes due to message queues growth on sender and receiver sides.</h2>
  
  <p>And I found message about this at <a href="https://apacheignite.readme.io/docs/clients-vs-servers#section-managing-slow-clients" rel="nofollow noreferrer">https://apacheignite.readme.io/docs/clients-vs-servers#section-managing-slow-clients</a>.</p>
  
  <p>So, I want reproduce the OOM exception ,then modify the configuration to make sure that I fix OOM in right way.
  But I can't reproduce the OOM exception, so How can I reproduce it?</p>
  
  <p>The other question is:  What's the default expire time ?<br>
  Cause I did not get the default expire time at <a href="https://apacheignite.readme.io/docs/expiry-policies" rel="nofollow noreferrer">https://apacheignite.readme.io/docs/expiry-policies</a>.</p>
  
  <p>Any helpers will be appreciated.</p>
  
  <h2>Below is my current configuration:</h2>
  
  <pre><code>    &lt;bean id="ignite.cfg" class="org.apache.ignite.configuration.IgniteConfiguration"&gt;
          &lt;property name="cacheConfiguration"&gt;
              &lt;list&gt;
                  &lt;bean class="org.apache.ignite.configuration.CacheConfiguration"&gt;
                      &lt;property name="name" value="name"/&gt;
                      &lt;property name="atomicityMode" value="ATOMIC"/&gt;
                      &lt;property name="cacheMode" value="REPLICATED"/&gt;
                  &lt;/bean&gt;
                          &lt;bean class="org.apache.ignite.configuration.CacheConfiguration"&gt;
                      &lt;property name="name" value="session"/&gt;
                      &lt;property name="atomicityMode" value="ATOMIC"/&gt;
                      &lt;property name="cacheMode" value="REPLICATED"/&gt;
                  &lt;/bean&gt;
              &lt;/list&gt;
          &lt;/property&gt;
  
          &lt;property name="peerClassLoadingEnabled" value="true"/&gt;
  
          &lt;property name="discoverySpi"&gt;
              &lt;bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi"&gt;
                  &lt;property name="ipFinder"&gt;
                      &lt;bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder"&gt;
                          &lt;property name="addresses"&gt;
                              &lt;list&gt;
                                  &lt;value&gt;10.130.221.31&lt;/value&gt;
                                  &lt;value&gt;10.130.223.32:47500..47509&lt;/value&gt;
                              &lt;/list&gt;
                          &lt;/property&gt;
                      &lt;/bean&gt;
                  &lt;/property&gt;
              &lt;/bean&gt;
          &lt;/property&gt;
      &lt;/bean&gt;
  </code></pre>