Multi-cache configuartion

Question

Assume the following:
* 100 different "products" I'd like to cache, each in their own Coherence Named Cache.
* Each Named Cache has different sizing requirements (accomplished through the "high-units" paramater)
* The Coherence cluster consists of many JVM processes spread out over many phsycial servers.
What is the best way to setup a Coherence configuration? I have thought of these approaches:
Approach #1:
Each Coherence server process "knows" about only one Named Cache. In this approach, I may have 200 server processes, 2 processes for each Named Cache.
Approach #2:
Each Coherence server process "knows" about all Named Caches. Each server process potentially has data related to ALL Named Caches.
Any feedback on the best way to go, or suggestions for a third approach?
Thanks!
Andy

Answer 1

Hi Paul,
So would the following configuration satisfy the case where I have 3 Named Caches (_CacheA_, CacheB and CacheC) where CacheA & CacheB are size limited per JVM to 100MB each, while CacheC is sized limited per JVM to 200MB?
Does each Named Cache have their own independent partitions, or do CacheA & CacheB share partitions (and does this mean they share the 100MB per JVM?)
Also, I assume the heap size per JVM must be carefully set as to have enough heap to store the expected storage per JVM (In this case, enough to store at least 400MB)
Thanks!
<cache-config>
  <cache-scheme-mapping>
    <cache-mapping>
      <cache-name>CacheA</cache-name>
      <scheme-name>dist100</scheme-name>
    </cache-mapping>
    <cache-mapping>
      <cache-name>CacheB</cache-name>
      <scheme-name>dist100</scheme-name>
    </cache-mapping>
    <cache-mapping>
      <cache-name>CacheC</cache-name>
      <scheme-name>dist200</scheme-name>
    </cache-mapping>
  </cache-scheme-mapping>
  <caching-schemes>
    <distributed-scheme>
      <scheme-name>dist100</scheme-name>
      <service-name>DistributedCache</service-name>
      <partition-count>509</partition-count>
      <backing-map-scheme>
        <local-scheme>
          <scheme-ref>size-limited-100mb</scheme-ref>
        </local-scheme>
      </backing-map-scheme>
    </distributed-scheme>
    <distributed-scheme>
      <scheme-name>dist200</scheme-name>
      <service-name>DistributedCache</service-name>
      <partition-count>509</partition-count>
      <backing-map-scheme>
        <local-scheme>
          <scheme-ref>size-limited-200mb</scheme-ref>
        </local-scheme>
      </backing-map-scheme>
    </distributed-scheme>
    <local-scheme>
      <scheme-name>size-limited-100mb</scheme-name>
      <eviction-policy>LRU</eviction-policy>
      <high-units>100</high-units>
      <unit-calculator>BINARY</unit-calculator>
      <unit-factor>1048576</unit-factor>
    </local-scheme>
    <local-scheme>
      <scheme-name>size-limited-200mb</scheme-name>
      <eviction-policy>LRU</eviction-policy>
      <high-units>200</high-units>
      <unit-calculator>BINARY</unit-calculator>
      <unit-factor>1048576</unit-factor>
    </local-scheme>
  </caching-schemes>
</cache-config>Edited by: user8723994 on Jul 20, 2010 2:56 AM
Edited by: user8723994 on Jul 20, 2010 5:40 AM