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  • Caching images in iPhone app

    - by objektivs
    My iPhone app has a built in RSS reader. There are images and I'd like to find a way to cache them on the system but have the system manage the caching and eventual clean up. Is there a way of doing this?

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  • .NET Regex Instance Caching

    - by jvenema
    I've read this article, which describes how instance vs static methods get called with a .NET regex. However, what about if the instance itself is static? Does anyone know if .NET does any sort of caching that could potentially cause a memory leak?

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  • decent html5 offline storage and caching examples

    - by Nils
    I'm keen to test out html offline storage and caching with a view to developing a prototype to show off the offline web application capabilities of html5. I've found some webkit-specific samples, but I'm battling to find any decent code samples that even work at all in Firefox 3.6 For a sample, I'd be happy with something that works with the following: Our company uses jquery extensively so I'd prefer samples that use that library or pure javascript. It should at least work on firefox (3.6+ is fine) Can anyone point me to some links that provide some guidance and code samples?

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  • Caching with Spring Framework

    - by Francois
    Spring Modules had a @Cacheable annotation: org.springmodules.cache.annotations.Cacheable Now that Spring Module is deprecated, what is the recommendation for caching? And is still still possible to work with ehCache?

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  • Passing data from page to page using System.Web.Caching.Cache

    - by Dan
    I'd like to pass data from one asp.net page to another. I've seen that using System.Web.Caching.Cache is a good way to accomplish this. I'm wondering if it's a good way to do it and also is there any cleanup or other things I need to keep in mind when you the Cache? I'm not passing very much, at most two integers. Thanks.

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  • Want to disable flash caching ?

    - by Mina Samy
    Hi all I have a .swf flash gallery that loads pics from a XML file the probelm is when I modify the XML the modifications do not reflect on the flash till I delete the browsing cache from the browser I tried to disable caching using code like this Response.Cache.SetCacheability(HttpCacheability.NoCache); Response.AddHeader("Pragma","no-cache"); Response.Expires = -1; but not working is there any workaround for this ? thanks

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  • Is there a way i can see why Squid (Proxy Server) determines why a resources should be a MISS?

    - by Pure.Krome
    Hi folks, I'm using Fiddler/FireBug to debug some of our live server web content. We're getting a lot of :- X-Cache: MISS from X-Cache-Lookup: MISS from :8080 Via: 1.1 :8080 (squid/2.7.STABE3) I thought i knew a lot about cache-control / expires / last-modified / etags, etc.. but maybe not. So .. is there a way I can run squid in some verbose way to see why it thinks a resource which i request, is cached/is not getting cached, etc.. which is why we're getting MISSes back? cheers :)

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  • How best to modernize the 2002-era J2EE app?

    - by user331465
    I have this friend.... I have this friend who works on a java ee application (j2ee) application started in the early 2000's. Currently they add a feature here and there, but have a large codebase. Over the years the team has shrunk by 70%. [Yes, the "i have this friend is". It's me, attempting to humorously inject teenage high-school counselor shame into the mix] Java, Vintage 2002 The application uses EJB 2.1, struts 1.x, DAO's etc with straight jdbc calls (mixture of stored procedures and prepared statements). No ORM. For caching they use a mixture of OpenSymphony OSCache and a home-grown cache layer. Over the last few years, they have spent effort to modernize the UI using ajax techniques and libraries. This largely involves javascript libaries (jquery, yui, etc). Client Side On the client side, the lack of upgrade path from struts1 to struts2 discouraged them from migrating to struts2. Other web frameworks became popular (wicket, spring , jsf). Struts2 was not the "clear winner". Migrating all the existing UI from Struts1 to Struts2/wicket/etc did not seem to present much marginal benefit at a very high cost. They did not want to have a patchwork of technologies-du-jour (subsystem X in Struts2, subsystem Y in Wicket, etc.) so developer write new features using Struts 1. Server Side On the server side, they looked into moving to ejb 3, but never had a big impetus. The developers are all comfortable with ejb-jar.xml, EJBHome, EJBRemote, that "ejb 2.1 as is" represented the path of least resistance. One big complaint about the ejb environment: programmers still pretend "ejb server runs in separate jvm than servlet engine". No app server (jboss/weblogic) has ever enforced this separation. The team has never deployed the ejb server on a separate box then the app server. The ear file contains multiple copies of the same jar file; one for the 'web layer' (foo.war/WEB-INF/lib) and one for the server side (foo.ear/). The app server only loads one jar. The duplications makes for ambiguity. Caching As for caching, they use several cache implementations: OpenSymphony cache and a homegrown cache. Jgroups provides clustering support Now What? The question: The team currently has spare cycles to to invest in modernizing the application? Where would the smart investor spend them? The main criteria: 1) productivity gains. Specifically reducing the time to develope new subsystems features and reduced maintenance. 2) performance/scalability. They do not care about fashion or techno-du-jour street cred. What do you all recommend? On the persistence side Switch everything (or new development only) to JPA/JPA2? Straight hibernate? Wait for Java EE 6? On the client/web-framework side: Migrate (some or all) to struts2? wicket? jsf/jsf2? As for caching: terracotta? ehcache? coherence? stick with what they have? how best to take advantage of the huge heap sizes that the 64-bit jvms offer? Thanks in advance.

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  • Have set Expiration time: Still getting "Query string present but no explicit expiration time"

    - by oligofren
    I have one local Apache instance running with mod_cache (+ disk & mem) enabled, and it seems to cache content from my appserver fine. My app server sets Expiration headers and Last-modified. Yet, when deploying on a production server with the same modules enabled, I am getting the following error in my logs: blablabla not cached. Reason: Query string present but no explicit expiration time Any clues on why Apache is not caching content? The only difference is the Apache version. Locally I am running 2.2. This is from my config CacheRoot "/var/cache/apache2/" CacheEnable disk / This is example output < HTTP/1.1 200 OK < Date: Mon, 19 Nov 2012 16:09:13 GMT < Server: Sun GlassFish Enterprise Server v2.1.1 < X-Powered-By: Servlet/2.5 < Expires: Tue Nov 20 05:00:00 CET 2012 < Last-Modified: Mon Nov 19 17:09:13 CET 2012 < Cache-Control: no-transform < Content-Type: application/x-javascript < Transfer-Encoding: chunked

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  • Using Varnish (only) for DDoS mitigation

    - by Martin Kanters
    My VPS is suffering from a (D)DoS doing a SYN flood with spoofed IPs. I'm right now searching from ways how to be able to defend (at least a bit) against it. It's running a DirectAdmin apache2 webserver. Mainly used for serving PHP and MySQL. We are using CloudFlare, which are saying that they are able to mitigate (D)DoS at some level, now the attacker knows our real IP address, so CloudFlare isn't helping a bit. I've done some searching on the net and found out about enabling SYN cookies, to defend against it. I've checked my settings and it seems it was enabled all along. I've also read about that Varnish is able to defend against SYN flooding and Slowloris attacks, now I'm pretty interested in using that. The thing is that CloudFlare is already caching a lot from us, and I don't wish to spend too much resources on Varnish. Is it possible and smart to set up Varnish only for the better handling of requests? Are there perhaps better ways which I've missed? Thanks in advance, Martin

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  • No resource found that matches given name in main.xml

    - by AndroidBeginner
    This is really starting to drive me crazy. <?xml version="1.0" encoding="utf-8"?> <TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@id+/textview" android:layout_width="fill_parent" android:layout_height="fill_parent" android:text="@string/hello"/> Produces the following error message: "Error: no resource found that matches the given name (at 'id' with value '@id+/textview'). This is copy and pasted from the Android hello world example.

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  • Temporary table resource limit

    - by Jk
    Hi, i have two applications (server and client), that uses TQuery connected with TClientDataSet through TDCOMConnection, and in some cases clientdataset opens about 300000 records and than application throws exception "Temporary table resource limit". Is there any workaround how to fix this? (except "do not open such huge dataset"?) update: oops i'm sorry there is 300K records, not 3 millions..

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  • Change resource file on the file

    - by Imran
    I woulld like to localize my WPF application with resource files. It good technics. But I have requirement to give ability to end user to change some localization information (for example some word traslation). It means change information in the resourse files on the fly (in run time). Is it possible ?

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  • MySQL & PHP Parameter 1 as Resource

    - by Nik
    Alright, PHP is throwing this error at me (in the log) when I run the code mentioned below: Error mysql_num_rows() expects parameter 1 to be resource, string given in (place) on line 10 Line 9-11 $queryFP = ("SELECT * FROM db"); $countFP = mysql_num_rows($queryFP); $aID = rand(1, $countFP); I think it has something to do with the $queryFP's syntax, but I'm not completely sure how to fix it since $queryFP's syntax is the simplest query I've ever seen.

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  • Change resource file on the fly

    - by Imran
    I woulld like to localize my WPF application with resource files. It good technics. But I have requirement to give ability to end user to change some localization information (for example some word traslation). It means change information in the resourse files on the fly (in run time). Is it possible ?

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  • Cannot parse persistence unit from class path resource

    - by Grzegorz S
    so I have this problem in running my Spring WS app which implements JPA ( or should implement..) I have a problem with running a WS, it looks like my Spring context can't find file persistence.xml Which i am able to believe because i did not have generated META-INF folder in my template (which is Maven project template with archetype org.springframework.ws) I have created META-INF manually. Here is the HTTP 500: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'caChainDao' defined in file [E:\STS\vfabric-tc-server-developer-2.7.2.RELEASE\zz\wtpwebapps\FCAWSv4\WEB-INF\classes\pl\famoc\test\ws\db\dao\caChainDao.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring-ws-servlet.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Cannot parse persistence unit from class path resource [persistence.xml] org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527) org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:609) org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:469) org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588) org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645) org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508) org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449) org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133) javax.servlet.GenericServlet.init(GenericServlet.java:160) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) java.lang.Thread.run(Thread.java:722) Here it is my persistence.xml <?xml version="1.0" encoding="UTF-8" ?> <persistence xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" version="2.0" xmlns="http://java.sun.com/xml/ns/persistence"> <persistence-unit name="persistenceUnit" transaction-type="RESOURCE_LOCAL" /> </persistence> here it is where i am looking for it <property name="persistenceXmlLocation" value="classpath:persistence.xml" /> and here it is path to this xml in my classpath: src/main/webapp/META-INF/persistence.xml Could anyone give me a hint what am i missing?

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  • Packaging Android resource files within a distributable Jar file

    - by Jeff Gilfelt
    I am working on some reusable Android code that I would like to distribute to other developers for use within their own applications. The code has some resource dependencies (layouts, xml & png drawables) that I would like to be able to include and reference within a single package (Jar file). Is this possible, and if so what is the best method to do this?

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