high concurrency

The design transaction model and high concurrency control mechanism which guarantee correctness and consistency is the key in PDM.

解决PDM中对长周期设计事务的高度并发控制、保证设计数据的正确性和一致性是PDM中的关键技术。

互联网摘选

In implementing systems with high concurrency requirements we can devise finer grained locking strategies based on the access requirements of the operations, hence reducing contention for resources.

在实现具有高并发性要求的系统时，我们可以基于操作的要求采用更细粒度的锁定策略，从而减少资源争用。

互联网摘选

In the rest of the article, I'll show you some of the other characteristics of the High Concurrency transaction strategy and two approaches to implementing it.

在本文的其余部分，我将向您介绍High Concurrency事务策略的其他一些特性，以及实现它的两种方法。

互联网摘选

Media libraries based on traditional client/ server mode, or pure Grid or P2P can hardly meet the requirements of both high concurrency and reliable service.

利用传统的基于纯粹的服务器/客户端、对等网络或网格的方法构造这种类型的媒体库，难以同时满足高并发度和可靠服务的要求。

互联网摘选

The eviction algorithms are designed to perform well under high concurrency as well.

同时逐出（eviction）算法也在高并发的环境下具有良好的表现。

互联网摘选

As the storage technology has been kept improving and the computable ability of computers increased rapidly, storage system is improving to fit the needs of large scale and high concurrency. The massive growth in information storage has brought new requirement to ensure the security of information storage.

随着存储技术的不断提高和计算机计算能力的飞速发展，存储系统逐渐向大规模、高并发的方向发展，对存储系统的存储安全也提出了新的要求。

互联网摘选

In these circumstances, you would use the High Concurrency transaction strategy& the topic of this series'fifth article.

遇到这种情况，需要使用High Concurrency事务策略&本系列第5篇文章的主题。

互联网摘选

The answer is to use the High Concurrency transaction strategy.

答案是使用High Concurrency事务策略。

互联网摘选

Logic tasks in the application service system with high concurrency.

在这样的应用服务系统中的逻辑任务具有的较高的并发性。

互联网摘选

Although it saves you from reattachment, the session may grow out of memory and probably has stale data for high concurrency systems.

尽管这能把你从重新关联中解脱出来，但会话可能会内存溢出，在高并发系统中可能会有旧数据。

互联网摘选

You can use two main techniques to implement the High Concurrency transaction strategy.

您可以使用两个主要技巧来实现High Concurrency事务策略。

互联网摘选

First was the concurrency. Because the system would receive a large number of requests in a short time, the traditional model of one connection per thread could not cope with such a high concurrency situation.

首先是并发度，由于系统会在短时间内收到大量请求，而传统的一个连接一个线程的模式并不能应付这种高并发的情况。

互联网摘选

Like the API Layer strategy, the High Concurrency strategy frees the client layer from any transaction responsibility.

与API层策略类似，High Concurrency策略释放了客户机层的任何事务责任。

互联网摘选

The consequent new features of high concurrency, high traffic and large amount of data make Web become a bottleneck of the Internet applications.

随之而来，高并发、高流量、数据量大的网络新特性使得Web已经成为Intenet应用的瓶颈，研究Web加速具有重要意义。

互联网摘选

This approach dramatically increases the capacity for high concurrency because database connections are pooled and shared amongst clients.

这种途径极大地提高了高并发性的容量，因为数据库连接在客户端之间共享连接池。

互联网摘选

To support high-throughput and high-user-concurrency requirements in an application or subsystem, you need high database concurrency.

为了在应用程序或子系统中支持高吞吐量和高用户并发性，您需要高数据库并发性。

互联网摘选

Modules with small particle size of shared memory communication, high speed, concurrency is good.

模块间采用小粒度的共享内存通讯方式，速度快，并发性好。

互联网摘选

It can be argued also that it provides more efficient use of resources in very high concurrency situations since threads are not held open and more complex flow control can be implemented.

可以这样说，异步通信在具有非常高的并发性的场景下可以实现更有效的资源使用，因为线程没有被打开并且可以实现更复杂的流控制。

互联网摘选

Certain business situations or technologies do not lend themselves to the High Concurrency transaction strategy.

某些业务情境或技术不对高并发性事务策略开放。

互联网摘选

As the name implies, this strategy is used primarily in applications that support a high degree of concurrency from a user perspective.

顾名思义，此策略主要在从用户的角度支持高度并发性的应用程序中使用。

互联网摘选

However, in the mobile teaching implementation process, the mobile education teaching quality is difficult to be guaranteed, because of the complexity of wireless networks, instability and high concurrency.

但是在移动教育教学实施过程中，无线网络的复杂性、不稳定等问题使移动教育教学的质量难以得到保障。

互联网摘选

In message push aspect, a message pool mechanism is introduced into the system, which significantly reduces the consumption of resources under the large data amount and high concurrency scenes.

在消息推送方面，系统引入了消息池机制，显著减少了大数据量高并发场景下的资源消耗。

互联网摘选

The designing and analyzing of security protocols remains a challenge for the subtlety of security goals, the uncertainty of penetrator model, the complexity of the running environment, and the high concurrency of protocol sessions.

由于协议安全属性的多样性和微妙性、攻击者模型的不确定性、协议运行环境的复杂性和协议会话的高并发性，安全协议的设计与分析至今仍是一项具有挑战性的工作。

互联网摘选

To support high database concurrency, you need to reduce database locks and hold resources for as little time as possible.

要支持高数据库并发性，则需要减少数据库锁，并尽可能缩短保持资源的时间。

互联网摘选

Like the High Concurrency strategy, the High Performance strategy involves trade-offs to consider.

与高并发性策略类似，高性能策略也要考虑折衷的问题。

互联网摘选

These problems may be business optimization suggestions, or concurrent large pressure increased significantly bring technical architecture adjustment, how to cope with high concurrency, high response, which is to continue to improve in the direction of the next step system.

这些问题可能是业务上的优化建议，或者并发量大、压力显著增大带来的技术架构方面的调整，怎么应对高并发，高响应，这是下一步系统继续改进的方向。

互联网摘选

If your application has high concurrency and your maximum pool size is too small, your connection pool will often experience waiting.

如果应用程序有高并发，而最大池大小又太小，连接池就会经常等待。

互联网摘选

The residue number system ( RNS) is a carry-free system and allows a high degree of concurrency.

余数系统（RNS）是一种并行工作机制并伴随自由进位的系统。

互联网摘选

Although the executive performance of single task cannot be improved in this strategy, the whole operating efficiency can be increased in the condition of high concurrency.

该策略尽管不能提升单个任务的执行性能，但是能够改善大并发情况下的整体运行效率。

互联网摘选

"Table per Subclass" is good for an OLTP system with high concurrency, simple queries and few shared columns.

“每个类层次一张表”对有高并发、简单查询并且没有共享列的OLTP系统来说是个不错的选择。

互联网摘选