Re: How do i cache a JSP on the proxy?
Kesav Kumar [EMAIL PROTECTED] wrote: Yes. Oscache provides a proxy independent caching solution. This is nice and once can have programtically control over the caching. The only drawback(or good for some one) in the current implementation is all caching is memory based. All the caching is done in memory and optionally file. Well, this not lowering the number of requests on the application server. My goal is to lower the number of request on the application server, for the pages, which are made with jsp, but change hardly ever. I would like to use the proxy for this use, so that the application-server doesnt even get the requests. (We have a proxy there, so why not use it in our favour) I know that oscache speeds up the whole thing :), since we agreed to use that one inside our jsp pages. (or i must miss something, that oscache is setting headers and stuff like that, but as far as i can see, it simply caches the body tag result.. ) -- Eduard Witteveen Systeem Ontwikkelaar NOS Internet, Mediacentrum Kamer 203 +31(0)356773059 http://www.omroep.nl/ Sed quis custodiet ipsos custodes? : The sixth Satire from Juvenal
Re: How do i cache a JSP on the proxy?
Title: RE: How do i cache a JSP on the proxy?
what about
%
if (
(System.currentTimeMillis()/1000) % 15
)
counter = 0
;
%
That is, you first make sure
that the time is rounded down to closest second and see if that is divisable by
15, and then resetting counter
Or did I completely misunderstand you?
Johan
From: Kesav Kumar
To: Orion-Interest
Sent: Saturday, June 09, 2001 12:03
AM
Subject: RE: How do i cache a JSP on the
proxy?
Yes. Oscache provides a proxy independent caching
solution. This is nice and once can have programtically control over the
caching. The only drawback(or good for some one) in the current
implementation is all caching is memory based. All the caching is done
in memory and optionally file.
Kesav Kumar Software Engineer
Voquette, Inc. 650 356 3740
mailto:[EMAIL PROTECTED]
http://www.voquette.com Voquette...Delivering Sound Information
-Original Message- From: Stan
Ng [mailto:[EMAIL PROTECTED]]
Sent: Friday, June 08, 2001 12:15 PM To: Orion-Interest Subject: Re: How do i cache
a JSP on the proxy?
This is slightly off-topic, but you may want to look into
OpenSymphony's OSCache module. It provides a
variety of caching options for JSP and it's been
working great for us here.
- Original Message - From:
"Eduard Witteveen" [EMAIL PROTECTED] To: "Orion-Interest" [EMAIL PROTECTED]
Sent: Friday, June 08, 2001 7:22 AM Subject: How do i cache a JSP on the proxy?
Hello, I want to cache a jsp page on the proxy (apache). My current setup is that i have
apache running on port 80, with following config: VirtualHost
145.58.67.8
ServerName eduard.omroep.nl ServerAlias eduard ErrorLog /var/proxy/logs/errors
CustomLog /var/proxy/logs/access
common ProxyPass / http://localhost:8080/
CacheRoot "/tmp/proxy"
/VirtualHost
Furthermore the orionserver is running on port 8080, and
has the following 'special' settings: frontend host="eduard.omroep.nl" port="80" /
For the testing purposes i
have the following jsp page: %@ page
session="false" % %! int counter = 0;
% %! // return a time
back, which is +15 seconds.. public long
getLastModified(HttpServletRequest request) {
System.out.println("in last modified");
// return 15 seconds..
return System.currentTimeMillis() * (15 * 1000) ; } %
% long seconds =
15; long now =
System.currentTimeMillis(); long expires = now + (seconds *
1000); response.setDateHeader("Expires",
expires);
System.out.println("in source.." + now + "-" + expires);
% html
body pThis
page was generated on time:%= now %br / Will expire at:%= expires %br / Expire time in seconds:%= seconds %br /
Count:%= counter++ %/p /body /html
Everytime i request the
page, the counter is increased, but this is not what i
want. I want to increased at an maximum of 1 time in the 15 seconds.
Can somebody help me how to accomplish this, or possible
otherways to cache the jsp pages on the front
proxy?
greatings, --
Eduard Witteveen Systeem Ontwikkelaar NOS Internet, Mediacentrum Kamer 203 +31(0)356773059 http://www.omroep.nl/
Sed quis custodiet ipsos custodes? : The sixth Satire
from Juvenal
RE: How do i cache a JSP on the proxy?
Title: RE: How do i cache a JSP on the proxy?
I think your getLastModified() logic is not proper. You are sending lastmodified time as current time*15 which means the lastmodification time is newer the proxy thinks that this page got changed. Try this logic
public long getLastModified()
{
File file = new File(getServletContext().getRealPath(jspfilename.jsp));
return file.lastModified();
}
Kesav Kumar
Software Engineer
Voquette, Inc.
650 356 3740
mailto:[EMAIL PROTECTED]
http://www.voquette.com
Voquette...Delivering Sound Information
-Original Message-
From: Eduard Witteveen [mailto:[EMAIL PROTECTED]]
Sent: Friday, June 08, 2001 7:23 AM
To: Orion-Interest
Subject: How do i cache a JSP on the proxy?
Hello,
I want to cache a jsp page on the proxy (apache).
My current setup is that i have apache running on port 80, with following config:
VirtualHost 145.58.67.8
ServerName eduard.omroep.nl
ServerAlias eduard
ErrorLog /var/proxy/logs/errors
CustomLog /var/proxy/logs/access common
ProxyPass / http://localhost:8080/
CacheRoot /tmp/proxy
/VirtualHost
Furthermore the orionserver is running on port 8080, and has the following 'special' settings:
frontend host=eduard.omroep.nl port=80 /
For the testing purposes i have the following jsp page:
%@ page session=false %
%! int counter = 0; %
%!
// return a time back, which is +15 seconds..
public long getLastModified(HttpServletRequest request) {
System.out.println(in last modified);
// return 15 seconds..
return System.currentTimeMillis() * (15 * 1000) ;
}
%
%
long seconds = 15;
long now = System.currentTimeMillis();
long expires = now + (seconds * 1000);
response.setDateHeader(Expires, expires);
System.out.println(in source.. + now + - + expires);
%
html
body
pThis page was generated on time:%= now %br /
Will expire at:%= expires %br /
Expire time in seconds:%= seconds %br /
Count:%= counter++ %/p
/body
/html
Everytime i request the page, the counter is increased, but this is not what i want. I want to increased at an maximum of 1 time in the 15 seconds.
Can somebody help me how to accomplish this, or possible otherways to cache the jsp pages on the front proxy?
greatings,
--
Eduard Witteveen Systeem Ontwikkelaar
NOS Internet, Mediacentrum Kamer 203
+31(0)356773059 http://www.omroep.nl/
Sed quis custodiet ipsos custodes? : The sixth Satire from Juvenal
Re: How do i cache a JSP on the proxy?
Kesav Kumar [EMAIL PROTECTED] wrote: I think your getLastModified() logic is not proper. You are sending lastmodified time as current time*15 which means the lastmodification time is newer the proxy thinks that this page got changed. Try this logic Your correct, i made a terrible misunderstanding, but i can see in the logs that this method is never called, so this isnt a sollution to my problem. -- Eduard Witteveen Systeem Ontwikkelaar NOS Internet, Mediacentrum Kamer 203 +31(0)356773059 http://www.omroep.nl/ Sed quis custodiet ipsos custodes? : The sixth Satire from Juvenal
Re: How do i cache a JSP on the proxy?
This is slightly off-topic, but you may want to look into OpenSymphony's
OSCache module. It provides a variety of caching options for JSP and it's
been working great for us here.
- Original Message -
From: Eduard Witteveen [EMAIL PROTECTED]
To: Orion-Interest [EMAIL PROTECTED]
Sent: Friday, June 08, 2001 7:22 AM
Subject: How do i cache a JSP on the proxy?
Hello,
I want to cache a jsp page on the proxy (apache).
My current setup is that i have apache running on port 80, with following
config:
VirtualHost 145.58.67.8
ServerName eduard.omroep.nl
ServerAlias eduard
ErrorLog /var/proxy/logs/errors
CustomLog /var/proxy/logs/access common
ProxyPass / http://localhost:8080/
CacheRoot /tmp/proxy
/VirtualHost
Furthermore the orionserver is running on port 8080, and has the following
'special' settings:
frontend host=eduard.omroep.nl port=80 /
For the testing purposes i have the following jsp page:
%@ page session=false %
%! int counter = 0; %
%!
// return a time back, which is +15 seconds..
public long getLastModified(HttpServletRequest request) {
System.out.println(in last modified);
// return 15 seconds..
return System.currentTimeMillis() * (15 * 1000) ;
}
%
%
long seconds = 15;
long now = System.currentTimeMillis();
long expires = now + (seconds * 1000);
response.setDateHeader(Expires, expires);
System.out.println(in source.. + now + - + expires);
%
html
body
pThis page was generated on time:%= now %br /
Will expire at:%= expires %br /
Expire time in seconds:%= seconds %br /
Count:%= counter++ %/p
/body
/html
Everytime i request the page, the counter is increased, but this is not
what i want. I want to increased at an maximum of 1 time in the 15 seconds.
Can somebody help me how to accomplish this, or possible otherways to
cache the jsp pages on the front proxy?
greatings,
--
Eduard Witteveen Systeem Ontwikkelaar
NOS Internet, Mediacentrum Kamer 203
+31(0)356773059 http://www.omroep.nl/
Sed quis custodiet ipsos custodes? : The sixth Satire from Juvenal
