Re: [Jscheme-devel] Re: High performance JScheme servlets?

[Timothy J. H. <tim...@ma...>]

On Sep 28, 2004, at 5:18 PM, Geoffrey Knauth wrote:

> On Sep 28, 2004, at 4:34 PM, Ken Anderson wrote:
>> Could we get a servlet that only reads the file once?  Or maybe even 
>> never - it calls a function that its already loaded?
>
> I think it should be an option.  load-always or load-once, so to speak.
I agree. We can work on it.

One method I have been using for static webpages that are build using 
jscheme servlets
is to just use a website copier (e.g. wget -kmp --update-links 
http://localhost:8080/mywebapp )
and then have a script that copies the website and moves these static 
pages to an apache
server.

In the www.4collegewomen.org site there are both static and dynamic 
pages so I have two variables
[dcontext] and [scontext] and use the wget to copy only the static 
pages while leaving links to the
dynamic pages alone. The apache-served static pages then have links to 
the Jetty-served dynamic
pages and we get good performance on static pages and OK performance on 
dynamic pages
(which are used as often for that website).

I often work with the "founder" of the website (a public health 
professional in Washington) by
phone and as we both view the website, I make changes to the dynamic 
site, run the script to
copy it to apache, and she sees the changes almost immediately. its 
pretty cool and really easy
from this side....



>
> At the customer site where I've been using JScheme servlets to demo 
> screen designs and change them on the spot, it's been very nice that 
> little tweaks to my html.scm and defs.scm "libraries" get reflected 
> immediately in the browser, and fellow developers were impressed that 
> I never had to stop/restart the Jetty server.
>
> I can see the value of load-once too, so long as there is a way to 
> dump ("forget") something in memory dynamically so a new version can 
> be loaded.
Yes, I do this on my sites using a "reload.servlet" at the top level 
that I can call to reload the dynamic
environment that the servlets run in.  That environment is initially 
set up when the Scheme servlet is loaded
by calling some initialization code in WEB-INF/scheme/scheme.sss which 
loads in the file in
WEB-INF/scheme/servletlib/init.scm and possibly elsewhere in WEB-INF.

---Tim---

>
> Geoffrey
> --
> Geoffrey S. Knauth | http://knauth.org/gsk
>
>
>
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