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当我们开发IT一体化集中监控管理系统时,其中的两个组件是必不可少的:采集器(Agent)和汇集器(Aggregator),采集器将状态信息上传到汇聚器中。POE 可以作为两者开发的应用框架。本文是POE的Lead Developer对POE的概述。
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POE: The Perl Object Environment
Rocco Caputo
<rcaputo@pobox.com>
July 11, 2003
Abstract
POE is a toolkit for rapidly developing networking applications in Perl. POE’s
powerful multitasking framework lets applications perform several tasks at once.
POE’s message passing capabilities allow applications to be distributed across a
network of machines. POE is mature, robust, and highly considered. POE is free
and open, and can be field-customized for an organization’s unique needs. POE
is well supported by many people, and there exists a number of free extensions
on the Comprehensive Perl Archive Network
1
.
1
Often abbreviated as “CPAN” and pronounced as “See-pan”.
Contents
1 A Rapid Development Toolkit for Networking 2
2 A Powerful Multitasking Framework 3
2.1 Events & Event Handlers . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Multitasking with Events and Handlers . . . . . . . . . . . . . . . 3
2.3 Avoiding the Pitfalls of Forking & Threading . . . . . . . . . . . . 4
2.4 Supporting Forked Processes & Threads . . . . . . . . . . . . . . 4
3 A Flexible Message Passing Environment 5
3.1 Internal Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Distributed Programming with External Events . . . . . . . . . . 5
4 A Robust, Tested System 6
5 A Large and Growing Toolbox 6
6 Success Stories 7
6.1 Best New Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.2 ActiveState Active Award Nomination . . . . . . . . . . . . . . . . 7
6.3 Need To Know . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.4 Linux Magazine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.5 Morgan Stanley . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.6 Books . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.7 Letters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 For More Information 11
Copyright
c
2003, Rocco Caputo. All rights reserved.
1
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