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Message from discussion Deploying a PSGI app in Apache without restarting (again)
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Mikolaj Kucharski  
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 More options Oct 29 2011, 4:43 pm
From: Mikolaj Kucharski <miko...@kucharski.name>
Date: Sat, 29 Oct 2011 21:43:00 +0100
Subject: Re: Deploying a PSGI app in Apache without restarting (again)
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On Sat, Oct 29, 2011 at 12:16:49PM -0700, Tatsuhiko Miyagawa wrote:
> On Sat, Oct 29, 2011 at 5:25 AM, Mikolaj Kucharski
> <miko...@kucharski.name> wrote:
> > Hi,

> > I know this question was asked before here:

> > http://stackoverflow.com/questions/6124010/how-do-you-deploy-a-psgi-s...

> > but I would like to understand where exactly is the output cached?

> Output is not cached. The *application* is compiled and cached, for performance.

> > I read Plack::Handler::Apache1 and Plack::Util, but I don't see any
> > caching mechanism there, maybe I'm missing something.

> https://metacpan.org/source/MIYAGAWA/Plack-0.9984/lib/Plack/Handler/A...
> There's "||=" operator, caching the application.

> > - Is it cached on Apache level, or in Plack/PSGI?

> > - Is the behaviour described at above StackOverflow link specific to
> > Apache and would behave differently with other HTTP server?

> Yes, but most Plack handlers and PSGI servers compile the PSGI code
> and runs it in a persistent environment. The only exceptions are CGI
> handler and Shotgun loader, which recompiles the application every
> time a request comes in.

Thanks for the anwsers. Much appreciated.

I'm learning, I'm a noob. In the past working with CGI, I could throw
bunch of testing scripts under a directory tree, modify them at any time
and see what happens after refreshing a page in a browser, without any
need to restart http server every time a change a character in a file.

So far no matter what I try to (re)create above scenario in PSGI
environment I hit a bug (some call it a ``feature'') which doesn't allow
me just work on the code and forget what server I'm running, and what
PSGI is all about.

Can anyone recommend me a solution for my need? I thought PSGIBin will
solve my problem, but so far it's not the case..

--
best regards
q#


 
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