Binary memory calculator on near cahce

Question

I am trying to cap cache size on client using near cache.
     <near-scheme>
               <scheme-name>extend-near</scheme-name>
               <front-scheme>
                    <local-scheme>
                         <high-units>500M</high-units>
                         <unit-calculator>BINARY</unit-calculator>
                    </local-scheme>
               </front-scheme>
               <back-scheme>
                    <remote-cache-scheme>
                         <scheme-ref>extend-dist</scheme-ref>
                    </remote-cache-scheme>
               </back-scheme>
               <invalidation-strategy>all</invalidation-strategy>
          </near-scheme>
with above configuration i see this exception
java.lang.IllegalArgumentException: Unsupported key or value: Key=1269, Value=com.starwood.valhalla.sherlock.dto.PropertyContentType@19be19be
In cache, key is integer and value is java bean. As per doc, both supposed to be [Binary Objects|http://download.oracle.com/otn_hosted_doc/coherence/330/com/tangosol/net/cache/BinaryMemoryCalculator.html].
But is there any way to make Binary calculator work with near cache with out modifying code?
BTW, Binary calculator working fine when configured on server side with distributed cache, this is implemented for reporting purposes
          <distributed-scheme>
     <scheme-name>dist-default</scheme-name>
     <backing-map-scheme>
          <local-scheme>
               <unit-calculator>BINARY</unit-calculator>
               <unit-factor>1024</unit-factor>
     </local-scheme>
     </backing-map-scheme>
     <autostart>true</autostart>
          </distributed-scheme>
Kiran

Answer 1

Hi Kiran,
The "front cache" of a near cache stores data in object form. Therefore you can not use BINARY unit-calculator. You need to use "FIXED" type and figure the unit size by dividing 500M/object size in byte.
-Luk