Performance of Ignite integrating with PostgreSQL

[itriA40453]

Hi,
I try to use Ignite to integrate with PostgreSQL.
And I use “atop” to monitor the data write to PostgreSQL.
Then observed that the writing speed is 1 MB per second.
This performance is not really good. Below is my configuration and code. Please 
help me to improve it.
Thanks.

There is my cache configuration:
                              <bean 
class="org.apache.ignite.configuration.CacheConfiguration">
                                    <property name="name" value= "testCache"/>
                                    <property name="cacheMode" 
value="PARTITIONED"/>
                                    <property name="atomicityMode" value=" 
ATOMIC"/>
                                    <property name="atomicWriteOrderMode" 
value="PRIMARY"/>
                     <property name="readThrough" value="true"/>
                                        <property name="writeThrough" 
value="true"/>
                             <property name="writeBehindEnabled" value="true"/>

                             <property name="writeBehindFlushThreadCount" 
value="64"/>
                             <property name="writeBehindBatchSize" 
value="131072" />
                             <property name="writeBehindFlushSize" 
value="131072" />

                             <property name="offHeapMaxMemory" value="0" />
                         <property name="cacheStoreFactory">
                        <bean 
class="javax.cache.configuration.FactoryBuilder$SingletonFactory">
                             <constructor-arg>
                                 <bean 
class="com.blu.imdg.jdbc.PostgresDBStore">
                                 </bean>
                             </constructor-arg>
                                                </bean>
                                    </property>
                                    <property name="backups" value="0"/>
                                    <property name="indexedTypes">
                                                <list>
                                                  
<value>java.lang.String</value>
                                                  
<value>java.lang.String</value>
                       </list>
                                    </property>
                </bean>


Main function:
        Ignite ignite = Ignition.start("PATH/example-cache.xml");
        IgniteCache<String, String> igniteCache = 
ignite.getOrCreateCache("testCache ");
        int seqint = 0;
        while(true)
        {
                        igniteCache.put(Integer.toString(seqint), 
"valueString");
                        seqint++;
        }


Write behind to PostgreSQL through JDBC:
@Override
public void write(Cache.Entry<? extends String, ? extends String> entry) throws 
CacheWriterException {
Map<String, Object> parameterMap = new HashMap<>();
parameterMap.put(“val”, entry.getValue());
String sqlString = "INSERT INTO test(val) VALUES (:val);";
jdbcTemplate.update(sqlString, parameterMap);
}



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