池管理系统实现一个简单的请求，使资源的请求者(或在资源耗尽的情况下，队列或只是否认)。

Implement a simple request manager system for the pool, which gives to the requesters the resources (or in case of running out of resources, queues them or simply denies them).

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介绍了一种交易中间件的原理，分析了主要数据结构队列，队列管理器的设计与实现算法，并给出了一个简单的流控策略模型。

This paper introduces the principle for transaction middleware, analyses the algorithm for Queue and Queue Manager, and presents a simple model for flow control.

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