Hi,
I came across a performance tip for JSF/JSP pages and would like to confirm it.
Here is what they say:
JSF/JSP tags should be in one line.
Example:
BEFORE
| h:form
|h:inputText value=SEAM Rocks
| /h:form
|
AFTER
| h:form h:inputText value=SEAM Rocks /h:form
|
Have you got a source for that? It seems like FUD to me.
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Here is a link to additional performance discussion thread
Topics discussed there include
EL performance, impact of reflection,
impact of Seam interception, using outjection,
impact of Seam lookups for annotations,
comparison with JSP
I don't think I saw this one yet:
don't code heavy logic or db access code (opening db connections are expensive)
in getXXX() methods that are called from JSF EL (e.g. methods called from
render or value attributes).
It's possible that your getXXX() methods may be called several times
In shale project there is a component that prevents double submits (shale
token).
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About double requests
I used for a long time the solution that I have proposed to Gavin
http://jira.jboss.org/jira/browse/JBSEAM-183
Gavin by some reasons did not accept it in to Seam. I did not catch exactly
why. As I understand it concerns clustering. I do not know about clustering,
but
very nice post really
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Here is a link for tuning of jboss as
http://www.jboss.org/wiki/Wiki.jsp?page=JBossASTuningSliming
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Great post, very informative and I think it will make a valuable addition to
the wiki. Thanks!
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Nice
Will defiantly use this...
Great Post.
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Thanks.
One more suggestion for General UI Design Tips
Prevent user from double submissions by using one of common solutions...
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You can, just hit Edit this page' on the
http://wiki.jboss.org/wiki/Wiki.jsp?page=JBossSeam page
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Use 64-bit OS with 64-it JVM is a good one.
http://www.jboss.org/wiki/Wiki.jsp?page=JBossASTuningSliming
Can we someone add link to this thread from Seam WIKI or make this
thread sticky?
Thanks
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I've added WIKI
http://wiki.jboss.org/wiki/Wiki.jsp?page=JSFPerformanceTipsInSeamApplications
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Seam is using custom faces context factory where creates a semaphor that
synchronizes the creaton of faces context for the current session if the
current faces contex is not released. But this does not mean that the action
method will be called twice. This means that there will not be two
Few more tips:
Keep style classes names, JavaScript functions names,
ID names short. They often repeat in HTML and there
are still people with modems.
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So, ideas how to prevent double action method invokation?
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So far I have this proposal to prevent double submission
http://jira.jboss.org/jira/browse/RF-710
Also it could be used on any Ajax request to prevent concurrent
ajax requests when there is ajax activity alread.
What do you think?
Thanks
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sorry didn't post properly ...
To turn off the Jboss seam logging, is it sufficient to change this setting at
\server\default\conf\log4j.xml:
|!-- === --
|!-- Setup the Root category --
|!-- === --
|
|root
| priority
hi mgrouch,
Thanks for the compilation.
To turn off the Jboss seam logging, it is sufficient to change this setting at
\server\default\conf\log4j.xml:
!-- === --
!-- Setup the Root category --
!-- === --
appender-ref
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