O'Reilly Open Source Software Convention 2002

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From the Frontiers of Research to the Heart of the Enterprise
O'Reilly Open Source Convention
Sheraton San Diego Hotel and Marina
July 22-26, 2002 -- San Diego, CA

Apache
Tutorial
POE Tutorial
Matt Sergeant, MessageLabs Inc.

Track: Perl
Date: Tuesday, July 23
Time: 8:45am - 12:15pm
Location: Harbor Island I
This tutorial will introduce POE, the Perl Object Environment, what POE is (exactly) what it does, what it is useful for, and go through the concepts involved, introducing them one-by-one with code examples.

POE acted out live. A captain and a few dinghys and lots of shouting messages. Requires audience participation.
What is POE, concepts, principals, high level overview.
What is it good for (network servers, daemons, network clients, GUI controllers, even one off scripts) and why.
POE Sessions - the sea of objects.
The POE Kernel - sending messages, setting alarms/delays, naming sessions, watching IO handles.
State Machines. What is one, and why POE is perfect for this.
Writing simple POE applications - a daemon that executes some code every 10 seconds, a TCP echo server.
POE Components (examples of PoCo::Client::HTTP, PoCo::Logger, PoCo::Server::HTTP).
Threading techniques - how to write threaded code for POE, subtle non-obvious issues, examples of where threading helps, producer-consumer problems.
Inter-Kernel Communication - possible uses for HTTP session management, load balancing, replication, centralised logging.