The use of the handler API is completely integrated into the capture and query component, and it greatly improves the performance of a system by optimizing database storage and retrieval.
处理程序api的使用完全集成在捕捉和查询组件中，并通过优化数据库存储和查询，显著改进系统的性能。
Controller - This component monitors many variables related to the work flow and decides how many instances of EC2 are necessary based on optimizing a small set of goals.
控制器——该组件监控工作流相关的大量变量，并以最优化一小组参数为目标，决定需要多少ec2实例。
While disk tuning is arguably less exciting than CPU or memory tuning, it is a crucial component in optimizing server performance.
尽管磁盘优化很可能没有 CPU 或者内存优化那么激动人心，但它是优化服务器性能的关键部分。
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