开放式高并发邮件推送系统的设计与实现

发布时间：2018-05-12 06:08

本文选题：邮件 + 推送服务　；参考：《北京邮电大学》2017年硕士论文

【摘要】：随着互联网应用的高速发展,用户网上互动的需求越来越大,互动方式也越来越多。在众多网上互动方式中,电子邮件推送是到达率极高的用户互动手段,目前已成为各互联网应用必备的功能之一。对于应用提供商来说,自行搭建邮件系统,需要有熟悉邮件协议的开发人员,成本较高,应用效果也难以保证;使用传统电子邮件服务提供商提供的电子邮箱服务,虽然可以解决基本的邮件发送接收问题,但在推送邮件并发能力及推送管理等方面存在较多问题;而当前大多数邮件推送服务商则一般通过自建邮件发送服务器实现邮件推送,这又往往导致推送邮件被收件服务器拦截,导致邮件到达率较低。针对前述问题,本文设计并实现了开放式高并发的邮件推送系统。系统可以配置使用多个邮件发送服务器来投递邮件,以提高邮件发送的并发量,同时降低邮件被拦截的可能性。另外,系统支持用户自定义邮件发送服务器,以充分利用现有资源。在发送邮件时,系统会根据实际的出信数量及退信数量选择合适的服务器投递邮件,以提高发信的成功率。为了应对服务器资源的可变性,实现了服务器资源的动态配置功能,系统管理员可实时增加或删除服务器资源,而不需要停止系统。同时,本系统提供开放式邮件推送接口,供第三方应用开发者使用,并且配套有一体化系统管理门户,方便用户完成自服务。本系统还综合使用了负载均衡及缓存等技术,提高了系统的吞吐量,降低了在较高并发请求情况下的请求处理时延。全文首先介绍了本课题的研究背景,随后分析了现有邮件推送解决方案的优点及不足,在此基础之上,提出本系统的需求;然后本文详细介绍了开放式高并发邮件推送系统的设计与实现;最后通过对系统的功能测试和性能测试,验证了本系统的有效性和在较高并发请求情况下的可用性。
[Abstract]:With the rapid development of Internet application, the demand of user's online interaction is more and more. Among the many online interaction methods, email push is a very high arrival rate of user interaction means, and has become one of the essential functions of various Internet applications. For application providers, to build their own mail system, they need developers who are familiar with the mail protocol, which is costly and difficult to guarantee the effect of application; using the email service provided by traditional email service providers, Although the basic mail sending and receiving problem can be solved, there are many problems in push mail concurrency ability and push management etc. At present, most mail push service providers generally use self-built mail sending server to push mail. This often leads to the push mail being blocked by the receiving server, resulting in a low mail arrival rate. In order to solve the above problems, this paper designs and implements an open mail push system with high concurrency. The system can be configured to use multiple mail sending servers to deliver messages to increase the amount of concurrent mail sent while reducing the possibility of blocking messages. In addition, the system supports user-defined mail server to make full use of existing resources. In order to improve the success rate of sending mail, the system will select the appropriate server to deliver mail according to the actual number of letters sent out and the number of letters sent back. In order to deal with the variability of server resources and realize the dynamic configuration of server resources, the system administrator can add or delete server resources in real time without stopping the system. At the same time, the system provides an open email push interface for third-party application developers, and an integrated system management portal is provided to facilitate users to complete their own services. The system also uses load balancing and cache techniques to improve the throughput of the system and reduce the delay of request processing in the case of high concurrent requests. This paper first introduces the research background of this topic, then analyzes the advantages and disadvantages of the existing email push solution, and then puts forward the requirements of the system. Then this paper introduces the design and implementation of the open high parallel email push system in detail. Finally, the effectiveness of the system and the availability of the system under the condition of high concurrent request are verified by the function test and performance test of the system.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.098

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