geode-docs/developing/storing_data_on_disk/overflow_config_examples.html.md.erb

---
title:  Overflow Configuration Examples
---

<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License.  You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->

The `cache.xml` examples show configuration of region and server subscription queue overflows.

<a id="overflow_config_examples__section_FD38DA72706245C996ACB7B23927F6AF"></a>
Configure overflow criteria based on one of these factors:

-   Entry count
-   Absolute memory consumption
-   Memory consumption as a percentage of the application heap (not available for server subscription queues)

Configuration of region overflow:

``` pre
<!-- Overflow when the region goes over 10000 entries -->
<region-attributes>
  <eviction-attributes>
    <lru-entry-count maximum="10000" action="overflow-to-disk"/>
  </eviction-attributes>
</region-attributes>
```

Configuration of server's client subscription queue overflow:

``` pre
<!-- Overflow the server's subscription queues when the queues reach 1 Mb of memory -->
<cache> 
  <cache-server> 
    <client-subscription eviction-policy="mem" capacity="1"/> 
  </cache-server> 
</cache>
```