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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Help writing first daemon
Date: Tue, 11 Sep 2012 17:13:14 +0200
Organization: cbb software GmbH
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Date: 2012-09-11T17:13:14+02:00
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On Tue, 11 Sep 2012 07:38:45 -0700 (PDT), Maciej Sobczak wrote:

> W dniu sobota, 8 wrze�nia 2012 10:06:28 UTC+2 u�ytkownik Dmitry A. Kazakov napisa�:
> 
>> But, if you consider running the middleware as a system service (daemon),
>> the main reason for that would be the architecture of shared memory.
> 
> No, there is no connection between these two concepts.

The concepts are single vs. multiple instances middleware.

> System services are created so they can be started and run unattended even
> after system restarts. A free-standing web server is a possible example here.

And there is no reason for a web server to be a system service. I see web
server as an application.

>> I.e. pipes and daemon are mutually exclusive.
>
> Not at all. These concepts solve different problems and have no
> implication on each other.

A dedicated system service and pipes are in the same league. Pipes
themselves is a service. If the middleware is considered service, then in
place of pipes. An conversely, if pipes to be used in the middleware, then
each application would have a more or less complete instance of the
middleware of its own.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de