无需重启即可安全升级

International Conference on Software Maintenance, 2003. ICSM 2003. Proceedings. Pub Date : 2003-09-22 DOI:10.1109/ICSM.2003.1235414

Miles Barr, S. Eisenbach

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引用次数: 23

摘要

组件交付的分布式开发和维护范例充满了问题。人们希望开发人员和客户之间的关系是自治和匿名的。然而，当新版本的组件发布时，用c++等语言编写的组件需要重新编译所有依赖的子系统。Java二进制格式的设计避开了这一限制，无需每次更改都重新编译。但是，如果必须停止程序以交换每个新组件，则无法发挥其潜力。本文描述了一个允许Java程序动态升级的框架。它的主要目的是允许安全的库替换现有的库，而不会对正在运行的程序产生不利影响。该框架为开发人员提供了一种机制来发布他们的库，并为客户提供了仅在安全的情况下升级的保证。

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Safe upgrading without restarting

The distributed development and maintenance paradigm for component delivery is fraught with problems. One wants a relationship between developers and clients that is autonomous and anonymous. Yet components written in languages such as C++ require the recompilation of all dependent subsystems when a new version of a component is released. The design of Java's binary format has side-stepped this constraint, removing the need for total recompilation with each change. But the potential is not fulfilled if programs have to be stopped to swap in each new component. This paper describes a framework that allows Java programs to be dynamically upgraded. Its key purpose is to allow libraries that are safe to replace existing libraries without adversely affecting running programs. The framework provides developers with a mechanism to release their libraries and provides clients with the surety of only upgrading when it is safe to do so.

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International Conference on Software Maintenance, 2003. ICSM 2003. Proceedings.

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