File: vendor/doctrine/doctrine-cache-bundle/Tests/DependencyInjection/Fixtures/config/xml/configurable.xml

<?xml version="1.0" ?>
<srv:container xmlns="http://doctrine-project.org/schemas/symfony-dic/cache"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:srv="http://symfony.com/schema/dic/services"
    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd
                        http://doctrine-project.org/schemas/symfony-dic/cache http://doctrine-project.org/schemas/symfony-dic/cache/doctrine_cache-1.0.xsd">

     <doctrine-cache>
        <provider name="configurable_apc_provider">
            <apc/>
        </provider>

        <provider name="configurable_array_provider">
            <array/>
        </provider>

        <provider name="configurable_chain_provider">
            <chain>
                <provider>configurable_array_provider</provider>
                <provider>configurable_apc_provider</provider>
            </chain>
        </provider>

        <provider name="configurable_memcached_provider">
            <memcached>
                <server host="memcached01.ss"/>
                <server host="memcached02.ss"/>
            </memcached>
        </provider>

        <provider name="configurable_memcache_provider">
            <memcache>
                <server host="memcached01.ss"/>
                <server host="memcached02.ss"/>
            </memcache>
        </provider>

        <provider name="configurable_redis_provider">
            <redis host="localhost" port="11211" />
        </provider>

        <provider name="configurable_mongodb_provider">
            <mongodb server="localhost:11211" >
                <database-name>my_database</database-name>
                <collection-name>my_collection</collection-name>
            </mongodb>
        </provider>

        <provider name="configurable_riak_provider">
            <riak host="localhost" port="8087">
                <bucket-name>my_bucket</bucket-name>
                <bucket-property-list>
                    <allow-multiple>false</allow-multiple>
                    <n-value>1</n-value>
                </bucket-property-list>
            </riak>
        </provider>

        <provider name="configurable_sqlite3_provider">
            <sqlite3 file-name="cache.db" >
                <table-name>my_table</table-name>
            </sqlite3>
        </provider>

        <provider name="configurable_filesystem_provider">
            <file-system extension="fsc">
                <directory>%kernel.cache_dir%/configurable-filesystem-provider</directory>
            </file-system>
        </provider>

        <provider name="configurable_phpfile_provider">
            <php-file extension="phpc">
                <directory>%kernel.cache_dir%/configurable-phpfile-provider</directory>
            </php-file>
        </provider>

        <provider name="configurable_couchbase_provider">
            <couchbase username="Administrator" password="password">
                <bucket-name>my_bucket</bucket-name>
                <hostname>127.0.0.1:809</hostname>
            </couchbase>
        </provider>
    </doctrine-cache>
</srv:container>