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Re: [Haskell-cafe] Re: what is *hack*?

Subject: Re: [Haskell-cafe] Re: what is *hack*?
From: Michael Snoyman
Date: Wed, 13 Jan 2010 22:56:55 +0200
Titto,

I've had no problems with hack. The only things to keep in mind are outside the scope of hack such as:

* Persistence. Clearly you need to optimize your application different for CGI run (load up only what you need right now) versus long-running processes like FastCGI (load data only once).
* URL schemes. A lot of people assume that your web app with be served from the root of the domain. When using my simpleserver testing, that *is* the case. However, I deploy apps in subdirectories of my domain (http://www.snoyman.com/photos/, http://www.snoyman.com/wordify/, etc), so I need to keep this in mind.

My only two quips about hack itself is:

* Versioning scheme. I wish (and have requested) that Hack would follow the Package Versioning Policy so that I could easily check for breaking changes. As is, I simply have to declare the exact version number of Hack I want to work with to guarantee my apps aren't broken in the future.
* More serious issue is that it returns the response as a lazy bytestring. It's not really fair to call this a quip, since I fully supported this approach; nonetheless, using an enumerator for this would probably be more efficient for certain use cases.

I just a few hours ago sent off an e-mail about bringing into fruition the Web Application Interface for Haskell, which I would envision as Hack with these two quips addressed. Theoretically, it would also allow easy collaboration with Hack.

Michael

On Wed, Jan 13, 2010 at 10:33 PM, Pasqualino "Titto" Assini <[email protected]> wrote:
Hi Michael,

what is your experience with hack? Do you have any problem moving your
apps from one server/env to another?

Regards,

  titto

2010/1/13 GÃnther Schmidt <[email protected]>:
> Hi Michael,
>
> on first impression this seems like a good idea then.
>
> GÃnther
>
>
>
> Am 13.01.10 15:48, schrieb Michael Snoyman:
>>
>> GÃnther,
>>
>> Hack is a layer between a web application and a web server. It allows
>> you to write a web application once and have it communicate with the
>> server in different ways simply by swapping the handler. For example, I
>> have applications that I test on my local system using
>> hack-handler-simpleserver and then deploy onto an Apache server using
>> either hack-handler-cgi or hack-handler-fastcgi.
>>
>> Michael
>>
>
>
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--
Pasqualino "Titto" Assini, Ph.D.
http://quicquid.org/
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