I always wondered a question about this kind of server side paging:
THE PROBLEM:
I suppose it is based on getting all the results at once from the database and storing them in session. Further on, data is extracted in slots from the session and thrown to a JSP for rendering.
Well, I guess that, if this session data is large, in clustered environments, the data is balanced among the different servers causing a high network traffic which becomes in a performance issue for the whole system. Even worst, a lot of times just a small amount of data is browsed from the client side, so there is not reason to catch MBs in session. Is it not a bad design pattern?
THE GUESSED SOLUTION:
Would not it be better to make a new query to the datasource (database usually), in order to recover just a slot of data, store it in request scope and send to the JSP for rendering. Would not be this second approach save machine resources?
In that way server would not be context aware, and would work just as proxy/formatter among client and datasource. Is not better approach? Or perhaps would depends on the data size to be fetched?
Thanks for your opinions,
Adolfo.
From: <[EMAIL PROTECTED]> Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: RE: Paging for table... Date: Sun, 4 Jan 2004 10:50:22 +0530
David,
Check for the details on http://www.servletsuite.com/servlets/pagertag.htm
Rahul
-----Original Message----- From: David Friedman [mailto:[EMAIL PROTECTED] Sent: Sunday, January 04, 2004 10:48 AM To: Struts Users Mailing List Subject: RE: Paging for table...
Rahul,
What is this paging taglib? Do you have a url?
Curious, David
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Sunday, January 04, 2004 12:15 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: Paging for table...
Check for paging taglib available for struts which will meet your requirements.
Rahul
-----Original Message----- From: Vasudevrao Gupta M V S S S (WT01 - UTILITIES) Sent: Saturday, January 03, 2004 8:57 PM To: 'David Friedman'; 'Struts Users Mailing List' Subject: RE: Paging for table...
.Can you please send across the sample code that you have developed???
-----Original Message----- From: David Friedman [mailto:[EMAIL PROTECTED] Sent: 03 January 2004 20:57 To: Struts Users Mailing List; [EMAIL PROTECTED] Subject: RE: Paging for table...
I use displaytag, www.displaytag.org, for that.
Regards, David
-----Original Message----- From: vasudevrao gupta [mailto:[EMAIL PROTECTED] Sent: Saturday, January 03, 2004 7:40 AM To: 'Struts Users Mailing List' Subject: Paging for table...
Hi,
I have a requirement where in user executes a query and gets some x number of records. I have to show the user 1-y records per page and when user clicks "next" button, he should be be able to see next y number of records.(Similar to yahoo site ).
Can any one pls tell me if struts frame work provides any inbuilt framework to do this kind of paging
Regards VasudevRaoGupta
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