You might consider changing the design of how you cache your data.
There are several JSP taglibs out that implement caching of data.
You can also do a runtime include of a static file instead of a JSP.
Regards,
Glenn
[EMAIL PROTECTED] wrote:
>
> Hi All,
>
> I'm curious if any of you have code that tests the performance of JSP
> recompiles while tomcat is under load. I've read that some changes were
> made in this area recently, and it directly effects a design I'm
> considering.
>
> If performance testing code exists, could someone send it to me?
>
> Thanks,
>
> Jason Henriksen
>
> P.S.: (If you're curious how I got into this sitation, here's the
> rationale: )
>
> Basically, I'm treating the disk drive as a cache. I expect to have well
> over 5,000 different query result pages, each of which could take over a
> minute to generate because they require some fairly thick SQL. The good
> news is that only about 100 of them will be 'active' at any given time.
> The non-active pages, can be built, saved on disk and then safely ignored
> (Thus being served with no database hit). However, when the object in the
> DB changes I should be able to show the update on the JSP page within 15
> minutines of the database change occuring.
>
> My plan is to generate a page for each of my 5,000 objects up front and
> then wait until a DB object changes. When it does, I'll regenerate the
> page for just that object. That way everyone see's the new static page,
> and the database can continue doing it's regular job of managing user
> accounts, and other such non-cacheable business. (The disk cache is also
> preferable to holding the results for all 5000 object queries in memory
> because the results will be fairly large. My disk space is near infinite,
> but my memory is not).
>
> So if I have 1000 people looking at the results for Object A when it needs
> to be re-compiled how will Tomcat respond? I know it does fine job
> handling updated JSPs in a development environment, I'm curious how it's
> expected to perform doing that kind of operation under load. (I understand
> that my mileage my vary, I'm just looking for what you guys would expect to
> happen, or do you suggest some other desgin?) Thus, I'm look for test-code
> and/or result numbers.
>
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--
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Glenn Nielsen [EMAIL PROTECTED] | /* Spelin donut madder |
MOREnet System Programming | * if iz ina coment. |
Missouri Research and Education Network | */ |
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