除了被称之为Main Cache的上述缓存之外,部分支持Aggregation机制的网元设备还需提供相应的聚合缓存(Aggregation Cache),最终的输出报文将包含该聚合缓存的汇总结果,从而能够有效降低NetFlow流量对网络带宽的占用;
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它的实现方式是将来自多个JVM的内存聚合以形成全局缓存。
This is achieved by aggregating memory from many JVMs that together form the global cache.
从缓存检索到的用以聚合到门户页面中的片段需要了解当前的页面上下文。
Fragments that are retrieved from a cache to be aggregated into a portal page then need to be made aware of the current page context.
利用Portlet缓存,门户会在响应请求前将缓存的Portlet片段聚合为完整的页。
With portlet caching, the portal aggregates cached portlet fragments into complete pages before responding to a request.
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