Boost asio architecture document

Does anyone know about a good architecture document开发者_如何学C for boost asio? All I find in the boost::documentation is about the api and how to use them. I would like to have a deeper understanding of the concepts behind them.

If I had overlooked the boost documentation, please let me know the correct resources.

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Here are some slides from a presentation by Michael Caisse at BoostCon 2010: Getting Started with ASIO

Here is the video of Michael giving that presentation, although the slides are easy to follow without watching the video: Michael Caisse: An Asio Based Flash XML Server

For more general information on the design, read up on the Proactor pattern