Controlling the client-side cache

At the current stage on my project I'm finding that I'm changing my mapping definitions fairly frequently (because the country side is just the wrong shade of egg-shell). Clearing the server side cache is fairly easy to do, provided you remember to do it, but my problem is on the client side.
Right now, the tiles are returned with a one week time to live. So if I change the mapping definitions it might not propagate through to all the clients until up to a week later. What I'd like to do, at least for now, is turn off storing of map tiles on the client-side. The easiest way to do that would be to specify the cache-control header but I can't seem to find a configuration option for that.
Has anyone setup MapViewer to use a different cache-control?

Hi Mark,
You can specify the cache control statements for the page itself.
If this does not help, try to set expires header for the images. ex for Apache see mod_expires for a directory/location setting
regards, michael

Similar Messages

Possible to delete Offline Files content for a specific user from the Client Side Cache (CSC) ?.

Hello Everyone,
We would like to implement a script to delete the offline files in the Client Side Cache (CSC) for a nominated user (on Windows 7 x64 enterprise).
I am aware that;
1. We can use a registry value to flush the entire CNC cache (for all users) next time the machine reboots.
2. If we delete the user's local profile it appears that Windows 7 also removes their content from the local CSC.
However, we would like to just delete the CSC content for a particular nominated user without having to delete their local user profile.
In our environment we have many users that share workstations but only use them occasionally. We don't use roaming profile so we would like to retain all the users' local profiles but still delete the CSC content for any users that haven't
logged on in a week.
Any ideas or info would be appreciated !
Thanks, Makes

Hi,
I don't think this is possible.
If you want to achieve it via script, I suggest you post it in official script forum for more professional help:
http://social.technet.microsoft.com/Forums/scriptcenter/en-US/home?category=scripting
The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding.
Karen Hu
TechNet Community Support

Chart Control printing at the client side

Hi,
I have multiple chart controls (in VS2010) on an aspx page, which also show their relevant detaild data in a table on the same page. I could not found yet an appropriate solution for printing such a page with chart control and other data.
In fact I was able to print the chart alone at the client side, but only by sending it directly to the printer, this method is unable to show print preview dialog to the client.
Then i started thinking in another direction, and came with the idea to export my desired controls into a pdf file which then can be shown in the browser (which resolves browser independance), for that i used nReco (the dll which comes with dot net) pdf converter
which can convert the whole html page into the pdf file (by passing the url of the page) and then opens/saves in the browser to print.
But when i pass it (to one of the the funtion in nreco) a container means a div or a panel control which holds the chart control and other normal controls then it gives me the error that unable to convert to pdf.
Tis may be due to the relative path of the chart control image.
I am stuck in this situtation, My original requirement is to show the the print preview to the user at client side with all printing options. It would be very convenient if the desired control can be exprted to pdf.
And I don't want to use any ohter third party control (for print preview at client side) which needs to be installed on the client machine.
Thanks.
Code Sample:
using NReco.PdfGenerator;
on Load
Chart1.Series[0].Points.DataBind(datatbl.Rows, "ColHeading", "colName", string.Empty);
On Print
HtmlToPdfConverter nRecohtmltoPdfObj = new HtmlToPdfConverter();
nRecohtmltoPdfObj.Orientation = PageOrientation.Portrait;
StringBuilder sb = new StringBuilder();
StringWriter tw = new StringWriter(sb);
HtmlTextWriter hw = new HtmlTextWriter(tw);
ChartPanel1.RenderControl(hw);
string temp =
"<html><head><style>td,th{line-height:20px;} tr { page-break-inside: avoid }</style><script>function subst() {var vars={};var x=document.location.search.substring(1).split('&');for(var i in x) {var z=x[i].split('=',2);vars[z[0]]
= unescape(z[1]);}" +
"var x=['frompage','topage','page','webpage','section','subsection','subsubsection'];for(var i in x) {var y = document.getElementsByClassName(x[i]);" +
"for(var j=0; j<y.length; ++j) y[j].textContent = vars[x[i]];}}</script></head><body onload=\"subst()\">"
+ sb.ToString()
+ "</body></html>";
nRecohtmltoPdfObj.GeneratePdf(temp);
Please suggest a batter way out.

Is this question hard to answer? or I am going to the wrong direction since I am new about Java EE/EJB.
Can anyone give me some answer?

Is there any way for a basemap to be manipulated from the client side?

Hello,
Essentially, we have a basemap (+basemap A+) that contains boundary geography (i.e., county, tract, block boundaries) and we have a theme (+theme A+) that contains housing unit points.
The idea is that theme A will be a layer that the user will be able to switch on/off. We know how to do this, but the problem comes in where performance is concerned.
Previously, theme A was actually included in basemap A, and performance was not an issue, but the problem then was that the user was not able to turn that layer on/off.
Also I have done everything I know in terms of caching as well as using the mapviewer API
(e.g.,
test_theme.setClickable(false);
test_theme.enableInfoWindow(false);
test_theme.enableInfoTip(false);
test_theme.enableLabels(false);
test_theme.enableAutoWholeImage(true);
test_theme.setMinVisibleZoomLevel(5);),
but rendering the theme on the client side is still way too slow (even at zoom level 5).
So, my question boils down to this. Is there any way for a basemap to be manipulated by a user? I.e., Is there a way for a user to pass parameters to a basemap, essentially telling it which themes to turn on/off?
I know you can specify which zoom level the basemap's themes are visible, but again, we want the user to be able to have control of when a certain theme is shown or not.
Thank you for any help you can provide,
John
Edited by: user641525 on Mar 18, 2009 10:29 AM
Edited by: user641525 on Mar 18, 2009 10:30 AM

What you may try is to replicate your base map but take the point theme out of its definition. Then create a second tile layer for the new base map. You can add both tile layers to the client (but set only one of them to be visible). Then simply switch the tile layers' visibility on/off based on user turning on/off the point theme. The built-in Oracle Maps tutorial #22 (Multiple Base maps) has some sample code you might be able to re-use.
thanks
LJ

Using the Client Result Cache

Hello everyone,
I have a question regarding the use of the client result cache but first of all here are the informations about my database:
SQL> SELECT * FROM v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0    Production
TNS for Linux: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
I have installed the Oracle Client Tools on my clientmachine. It has a tnsnames.ora like this:
ORCL =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = FEA11-119SRV)(PORT = 1521))
    (CONNECT_DATA =
      (SERVICE_NAME = orcl.local)
The Client Result Cache is configured in the sqlnet.ora.
ADR_BASE = /u01/app/oracle
OCI_RESULT_CACHE_MAX_SIZE= 2048000
OCI_RESULT_CACHE_MAX_RSET_SIZE = 1024000
NAMES.DIRECTORY_PATH = (EZCONNECT, TNSNAMES, HOSTNAME)
The Databaseserver is configured like that:
SQL> col name format a30
SQL> col value format a30
SQL> SELECT name, value
2 FROM   v$system_parameter
3 WHERE name LIKE '%result_cache%';
NAME                   VALUE
result_cache_mode           MANUAL
result_cache_max_size           0
result_cache_max_result        5
result_cache_remote_expiration 0
client_result_cache_size       1073741824
client_result_cache_lag        3000
After configuring client an server I try the followign SQL-Statement on the clientmachine:
sqlplus oracle/password@orcl
set autotrace traceonly explain
SELECT /*+ result_cache */ *
FROM testtable;
SQL
The execution plan show two operations: "SELECT STATEMENT" and "TABLE ACCESS FULL" but no the "RESULT CACHE" operation.
Did I miss something?
Any help would be appreciated
Florian W.

result_cache_max_size           0
That means the result cache is disabled. You need to set it to a non-zero value. That is the maximum ammount of memory, in bytes, the database will allocate on the shared pool to dedicate it to the result cache for all requests.
By the way, OCI_RESULT_CACHE_MAX_SIZE is optional. By default the sessions will have the maximum size they can occupy on the cache determined by CLIENT_RESULT_CACHE parameter, the client (OCI) side parameters override that.
result_cache_mode           MANUAL
Another thing to consider is RESULT_CACHE_MODE in MANUAL, that will cause only the statements with the RESULT_CACHE hint on it to be cached on the result cache. You can also set result cache to mode FORCE on specific tables with alter table command.
Regards

Client-side caching of Javascript (for Google Web Toolkit *.cache.* files

Hi all,
I'm trying out the use of Google Web Toolkit (GWT) for AJAX code development, leveraging RPC calling back-end Web Services for a document browser prototype. When the JavaScript code is generated by GWT, it has the ability to automatically distinguish between cacheable and non-cacheable content via file extensions (.cache. and .nocache.).
Now when running in a Tomcat environment with appropriate caching settings; the application runs extremely fast even on really poor latency sites (>500ms round trip); however on a NetWeaver stack, I can't find any information on how to set an attribute on .cache. files to set an expiry of 1 year.
Anyone know how to do this on a NetWeaver J2EE stack?
Thanks,
Matt
PS. For reference, GWT is a very cool open source project worth watching in the Enterprise space for targeted high-usability, high performance apps. Just the image bundles concept themselves are an awesome approach to minimizing impact of small images on performance.

Hi again,
I thought I should post the solution I came up with in case people search on GWT in the future. In terms of caching, the Portal does a good job of making nearly everything that GWT produces to be cached at the client; and for the life of me, I couldn't get nocache files not cached at the client side.
So thanks to my friendly local SAP experts in the portal space; I discovered there's not much you can do to get this working except try use standard browser tags like the following to prevent caching on the browser:
Note - Can't seem to save this post in SDN with Meta tags that I'm trying to display so check out http://www.willmaster.com/library/tutorials/preventing_content_cache.php for more info...
Unfortunately, the way that GWT creates the nocache files, it is not possible to modify the .js files to do this so I needed an alternative approach.
Then I thought, well, the html file that includes the JS file is cached, but it's not very big, so how about I just write a script to modify the html file when I deploy to production to point to the nocache file with a date suffix.
Let me explain in more detail:
1. The original html file that includes the nocache.js file gets modified to point to nocache.<date>.js.
2. The original nocache.js file gets changed to nocache.<date>.js
3. Now produce an external bat file to do this automatically for you before deployment which DevStudio can call as part of an Ant script or similar.
That's it. So when you are developing, you can manually delete your cache, but just before you go to production, you do this conversion, and you will never have an issue with clients having the wrong version of javascript files.
Note - GWT takes care of caching of most of the files by using a GUID equivalenet each time you compile, so it's just a couple of files that really need to not be cached.
Anyway, I'm not explaining this solution very well, but drop us a line if you need to understand this approach further.
And lastly, my feedback about GWT - It Rocks! Everyone loves the result, it's easy to build and maintain, it offers a great user experience, and it's fast. Not a replacement for transactional apps; but for the occasional user - go for it.
Matt
Edited by: Matt Harding on May 22, 2008 7:48 AM

Client-Side Caching of Static Objects

Hi,
We just installed SPS12 for NWs. I learned of this new client-side caching of static objects while reading through the release notes, and I went in to our portal to check it out. I went to the location where the <a href="http://help.sap.com/saphelp_nw04s/helpdata/en/45/7c6336b6e5694ee10000000a155369/content.htm">release notes</a> (and an <a href="https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/6622">article in the blog</a>) specified, System Administration > System Configuration > Knowledge Management > Content Management > Global Services.
Problem is that I do not see Client Cache Service and Client Cache Patterns. I enabled "Show Advanced Options," but I do not see those two configuration items.
Does anyone know why I am not seeing those two configuration items and how I can get to those?
Thank you.

Hi,
We are using SPS 12.
KMC-CM 7.00 SP12 (1000.7.00.12.0.20070509052145)
KMC-BC 7.00 SP12 (1000.7.00.12.0.20070509052008)
CAF-KM 7.00 SP12 (1000.7.00.12.0.20070510091043)
KMC-COLL 7.00 SP12 (1000.7.00.12.0.20070509052223)
KM-KW_JIKS 7.00 SP12 (1000.7.00.12.0.20070507080500)

Client side cacheing!

Hi,
We have a Java Web Start application, which caches around 500MB of heavy weight objects in memory. These corresponds to different reports and it kind of grows over the time. I am looking for some kind of architecture framework or some work around to maintain this cache at the client side. It is bit late to change the architecture and it is important to cache all the objects.
Could somebody suggest your views on this?
Thank You,
Vikram

Cross post:
http://forum.java.sun.com/thread.jspa?threadID=649133
http://forum.java.sun.com/thread.jspa?threadID=649134
http://forum.java.sun.com/thread.jspa?threadID=649135
http://forum.java.sun.com/thread.jspa?threadID=649136
http://forum.java.sun.com/thread.jspa?threadID=649137
http://forum.java.sun.com/thread.jspa?threadID=649138

Client side caching

Hi all,
I wonder how client side caching (in memory) would work with BlazeDS.
There was a project called FAST that would support client side caching for Remoting:
http://www.adobe.com/devnet/flex/articles/fast_userguide.html, but this doesn't seem to work for Flex 3.
Do I have to invent my own caching mechanism?
Without client side caching support I don't see how an application build on BlazeDS remoting would ever scale to many users.
Regards,
Markus

Hi Markus. I took a look at that FAST project. There isn't anything like that in BlazeDS currently. It probably wouldn't be too hard to port that code to make it work with Flex 3 but it's usefulness looks somewhat limited. There doesn't look to be any way to timeout a request that has been cached for example which I think most people would want. If you think this is something that would be useful you can log an enhancement request in Jira.
http://bugs.adobe.com/jira/browse/BLZ
As to your point about not seeing how an application built on BlazeDS remoting would scale, I think it's a fairly common practice to not expose functions to the end user that directly call backend services. It's pretty straightforward, for example, to request some data when the application loads and then refresh the data at some interval. You don't need a caching API to do this.
-Alex

Client-Side Cache Question

Let's say I have a FLV that "lives" on a server, and I serve
it up through, say, Ruby. The Ruby script takes care of obtaining
the FLV from the filesystem and renders it to the browser.
Inside my client-side SWF, my code to connect to the Ruby
application and get the FLV may look like this:
var nc:NetConnection = new NetConnection();
nc.connect(null);
var ns:NetStream = new NetStream(nc);
tvid.attachVideo(ns);
ns.setBufferTime(2);
statusID = setInterval(videoStatus, 200);
ns.onStatus = function(info) {
trace(info.code);
if(info.code == "NetStream.Buffer.Full") {
bufferClip._visible = false;
ending = false;
clearInterval( statusID );
statusID = setInterval(videoStatus, 200);
if(info.code == "NetStream.Buffer.Empty") {
if ( !ending ) {
bufferClip._visible = true;
if(info.code == "NetStream.Play.Stop") {
bufferClip._visible = false;
//ending = true;
if(info.code == "NetStream.Play.Start") {
ending = false;
if(info.code == "NetStream.Buffer.Flush") {
ending = true;
//Play it
ns.play("
http://localhost:3000/stream");
==============
It seems to me that the "decision" of whether or not to cache
is entirely dependent on the access method within the client-side
SWF. So, if in this case, I'm using NetStream to stream the video,
will it still be cached on the client end? Or do I -have- to use
FMS to prevent client caching - and if so, why? How does FMS
prevent the client from caching the data (isn't it up to the client
to delete the data bits after they're viewed?)
Thanks a bunch for the help.

Let's say I have a FLV that "lives" on a server, and I serve
it up through, say, Ruby. The Ruby script takes care of obtaining
the FLV from the filesystem and renders it to the browser.
Inside my client-side SWF, my code to connect to the Ruby
application and get the FLV may look like this:
var nc:NetConnection = new NetConnection();
nc.connect(null);
var ns:NetStream = new NetStream(nc);
tvid.attachVideo(ns);
ns.setBufferTime(2);
statusID = setInterval(videoStatus, 200);
ns.onStatus = function(info) {
trace(info.code);
if(info.code == "NetStream.Buffer.Full") {
bufferClip._visible = false;
ending = false;
clearInterval( statusID );
statusID = setInterval(videoStatus, 200);
if(info.code == "NetStream.Buffer.Empty") {
if ( !ending ) {
bufferClip._visible = true;
if(info.code == "NetStream.Play.Stop") {
bufferClip._visible = false;
//ending = true;
if(info.code == "NetStream.Play.Start") {
ending = false;
if(info.code == "NetStream.Buffer.Flush") {
ending = true;
//Play it
ns.play("
http://localhost:3000/stream");
==============
It seems to me that the "decision" of whether or not to cache
is entirely dependent on the access method within the client-side
SWF. So, if in this case, I'm using NetStream to stream the video,
will it still be cached on the client end? Or do I -have- to use
FMS to prevent client caching - and if so, why? How does FMS
prevent the client from caching the data (isn't it up to the client
to delete the data bits after they're viewed?)
Thanks a bunch for the help.

How to Print Crystal Report without any dialog message on the client side

Hi!
I've read too much questions like this, but i can't find any answer.
How can i print a report on the client side directly?
I have three buttons, "Generate Report", "Generate PDF", "Print".
I want when the "Print" button was clicked, automaticaly the report is printed using default printer, like PrintToPrinter function, but in the client side.
Thanks!

If you search for previous posts about this, you will see many posts saying not possible. If this functionality was possible, you could essentially have a page that would send something to a clients printer just by visiting the page, how bad of security hole would that be?

Opening a Java Window from a jsp page on the client side

Hi all,
Thanks in advance to all who could help me for this problem.
I've written some jsp pages. In one of them, I open a new Java Window,
which is a simple Java Frame. If I test this directly on the Tomcat
server, everything works well.
But when I call the jsp page through a web browser of a distant client
(normal use), and when I want to see the java window, no window pops
up. It appears that the Java Window pops up on the server, and not on
the client side, which is what I wanted.
Could someone tell me how to make the Java frames appear on the client
side ? (Is it linked to the code or to the configuration of Tomcat ?)
Thanks in advance,
Alexis.

JSP always run on the server. On the client you only see the results.
But you can use applets on the client side: http://java.sun.com/docs/books/tutorial/uiswing/components/applet.html

Auto remove of log files on the client-side is not working

Hi,
I have a setup for one-to-one client/server replication database. Everything is replicated ok.
But on the client side, I see the log.00000000xx files are not removing at all,
while the server has only 2 last log.00000000xx files left. But if I switch the role of the client/server,
the newly server will eventually removed the unused log.00000000xx file, and have two last log file left.
Both client and server database environment setup has called dbenvp->log_set_config(dbenvp, DB_LOG_AUTO_REMOVE, 1).
Is there any additional setting for the client-side to auto remove the unused log files?
Thanks,
Sandra

Hi.
First, what version are you running? We created a test to confirm that this feature is
working as expected on both a master and a client site. What flags do you have set
for replication? I think we need to have you run with replication verbose messages
set on the client site and possibly other diagnostics in order to determine what is different
about your setup. We should take that level offline. Verbose messages can generate
a large amount of output.
You can contact me at the typical [email protected] and we'll move it
forward that way. Thanks.
Sue LoVerso
Oracle

How can i lookup a session bean from the client side

how can i lookup a session bean from the client side...........i am using sun appserver..............
this is my code.................[B]
private final static String JNDI_NAME="ejb/LmsBean";
private static String url="ldap://localhost:4848";
Hashtable h=new Hashtable();
h.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
h.put(Context.PROVIDER_URL,url);
System.out.println("Before Loading Context in Delegate");
Context ctx=new InitialContext(h);
System.out.println("Loaded Context in Delegate");
Object obj=ctx.lookup(JNDI_NAME);
System.out.println("Loaded Object in Delegate");
System.out.println("Before Loading Home in Delegate");
LmsHome home = (LmsHome )PortableRemoteObject.narrow(obj,com.parx.lms.controller.LmsHome.class);
System.out.println("Loaded Home in Delegate");
lms = home.create();
System.out.println("Loaded remote in Delegate");
[B]and i got the exception........
Inside Client before calling delegate
Before Loading Context in Delegate
javax.naming.CommunicationException: Request: 1 cancelled
javax.naming.CommunicationException: Request: 1 cancelled
at com.sun.jndi.ldap.LdapRequest.getReplyBer(LdapRequest.java:60)
at com.sun.jndi.ldap.Connection.readReply(Connection.java:405)
at com.sun.jndi.ldap.LdapClient.ldapBind(LdapClient.java:340)
at com.sun.jndi.ldap.LdapClient.authenticate(LdapClient.java:171)
at com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:2640)
at com.sun.jndi.ldap.LdapCtx.<init>(LdapCtx.java:290)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURL(LdapCtxFactory.java:175)
at com.sun.jndi.ldap.LdapCtxFactory.getUsingURLs(LdapCtxFactory.java:193
at com.sun.jndi.ldap.LdapCtxFactory.getLdapCtxInstance(LdapCtxFactory.ja
va:136)
at com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(LdapCtxFactory.jav
a:66)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:6
62)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243
at javax.naming.InitialContext.init(InitialContext.java:219)
at javax.naming.InitialContext.<init>(InitialContext.java:195)
at com.parx.lms.lmsdelegate.LmsDelegate.getController(LmsDelegate.java:3
0)
at com.parx.lms.lmsdelegate.LmsDelegate.addUserDelegate(LmsDelegate.java
:50)
at com.parx.lms.client.consoleClient.Client.main(Unknown Source)
pls go tru the exception and pls help.........

That url string should be having the server name or ip instead of localhost.

ADF Faces + hardware device in the client side.( adf swing or adf java fx)

We are using adf+swing in desktop app.
We like ADF Faces but we need interations with Hardware device in the client side: scan reader, web cam, bar code reader, finger prints reader …
How to do that’s in the adf faces web environment ( what about with sandbox security) how to obtain in the adf faces web page in the client side de video streams.
In the future adf will be use Java FX?
Thanks
Juan Carlos Llanes

Hi,
see sample 71 http://www.oracle.com/technetwork/developer-tools/adf/learnmore/index-101235.html#CodeCornerSamples
You can use ActiveX plugins or JavaApplet to access the client system. To reach out of the sandbox, it will require a certificate
In the future adf will be use Java FX?
No.

Controlling the client-side cache

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