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• make IIS 7.5 cache static content files over diferent pages

  - by Achilles

  On a Windows 2008 R2, using DNS and IIS I've established my development test server; i.e. I'll have a web application that I can browse on http://test.dev I've moved all the static content files like images, js files and css files into another application which is visible on http://cdn.test.dev test.dev, uses cdn.test.dev urls like…

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• Cross-platform distributed fault-tolerant (disconnected operation/local cache) filesystem

  - by Adrian Frühwirth

  We are facing a design "challenge" where we are required to set up a storage solution with the following properties: What we need HA a scalable storage backend offline/disconnected operation on the client to account for network outages cross-platform access client-side access from certainly Windows (probably XP upwards),…

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• make IIS 7.5 cache static content files over diferent pages

  - by Achilles

  On a Windows 2008 R2, using DNS and IIS I've established my development test server; i.e. I'll have a web application that I can browse on http://test.dev I've moved all the static content files like images, js files and css files into another application which is visible on http://cdn.test.dev test.dev, uses cdn.test.dev…

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• Plan Caching and Query Memory Part I – When not to use stored procedure or other plan caching mechanisms like sp_executesql or prepared statement

  - by sqlworkshops

    The most common performance mistake SQL Server developers make: SQL Server estimates memory requirement for queries at compilation time. This mechanism is fine for dynamic queries that need memory, but not for queries that cache the plan. With dynamic queries the plan is not reused for different set of parameters…

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• Best available technology for layered disk cache in linux

  - by SpliFF

  I've just bought a 6-core Phenom with 16G of RAM. I use it primarily for compiling and video encoding (and occassional web/db). I'm finding all activities get disk-bound and I just can't keep all 6 cores fed. I'm buying an SSD raid to sit between the HDD and tmpfs. I want to setup a "layered" filesystem where reads are…

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• Debian (wheezy) force cache to RAM

  - by Marek Javurek

  I have Linux server running about 6 game servers. I have 3 GB total of RAM but I use only about 500 MB. Is there a way to cache one of my game servers (all the files - even not actually used maps etc. - about 1,5 GB) to RAM? The reason I want to do this is because my Linux server is virtual and the hard drives ar very…

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• Linux buffer cache effect on IO writes?

  - by Patrick LeBoutillier

  I'm copying large files (3 x 30G) between 2 filesystems on a Linux server (kernel 2.6.37, 16 cores, 32G RAM) and I'm getting poor performance. I suspect that the usage of the buffer cache is killing the I/O performance. To try and narrow down the problem I used fio directly on the SAS disk to monitor the performance. …

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• Linux buffer cache effect on IO writes?

  - by Patrick LeBoutillier

  Hi, I'm copying large files (3 x 30G) between 2 filesystems on a Linux server (kernel 2.6.37, 16 cores, 32G RAM) and I'm getting poor performance. I suspect that the usage of the buffer cache is killing the I/O performance. To try and narrow down the problem I used fio directly on the SAS disk to monitor the…

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• Clearing Cache in Mail on Snow Leopard

  - by Gordon

  Can anyone tell me how to clear the cache in the Mail application on Snow Leopard? I noticed that it was automatically backing up my gmail messages so it ended up caching 11GB of emails even though that's more than my account. The only solution I seem to be able to find is to delete the files in…

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• Cache coherence literature for big (>=16CPU) systems

  - by osgx

  Hello What books and articles can you recommend to learn basis of cache coherence problems in big SMP systems (which are NUMA and ccNUMA really) with =16 cpu sockets? Something like SGI Altix architecture analysis may be interesting. What protocols (MOESI, smth else) can scale up well?

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• Diagnosing a Memcache server with a high cache miss rate

  - by Hobozilla

  Hi Guys, What tools are available to debug a memcache server with a high miss rate (62%)? Ideally I would like to know the keys for the top cache misses, but I would just settle for seeing the keys of live get requests and working it out from there. I have tried a few web based things…

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• Squid cache, disable all caching.

  - by xan

  Squid 2.7 (installed on a Windows box) is causing problems having cached a "server down for maintenance) page for a web service used here. How do you totally disable caching in squid cache? Cheers!

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• Does Tomcat or Jetty cache dynamic content?

  - by Continuation

  I'm working on a Servlet app with contents that are updated periodically. Hence, between updates any dynamic pages generated by the Servlet can be cached. Does Tomcat or Jetty (or any Servlet container) offer a way to cache dynamically generated pages? Or would I need to use a caching…

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• Configuring UCM cache to check for external Content Server changes

  - by Martin Deh

  Recently, I was involved in a customer scenario where they were modifying the Content Server's contributor data files directly through Content Server.  This operation of course is completely supported.  However, since the contributor data file was modified through the…

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• Oracle EXECUTE IMMEDIATE changes explain plan of query.

  - by Gunny

  I have a stored procedure that I am calling using EXECUTE IMMEDIATE. The issue that I am facing is that the explain plan is different when I call the procedure directly vs when I use EXECUTE IMMEDIATE to call the procedure. This is causing the execution time to increase 5x. …

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• Does jQuery ajaxSetup({cache: true}) generally work?

  - by fsb

  jQuery 1.4.2 omits the timestamp GET parameter (to defeat browser cacheing) if I assert the ajax cache setting in the local context: $.ajax({ url: searcher, data: keys, cache: true, type: 'GET', dataType: 'json', success: function(data) { //…

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• Is learning the Caché database hard coming from relational databases and object oriented programming

  - by Edelcom

  I am currently running the local version of Caché on my system in order to determine if I can (and will) take on a new possible project. The current project uses Delphi 7 as a front end calling a Caché dll where the business logic is stored in the database. I have a…

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• Performance of std::pow - cache misses???

  - by Eamon Nerbonne

  I've been trying to optimize a numeric program of mine, and have run into something of a mystery. I'm looping over code that performs thousands of floating point operations, and just 1 call to pow nevertheless, that call takes 5% of the time... That's not…

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• cache memory performance

  - by Krewie

  Hello, i just have a general question about cache memory. How would a program perform badly on a cache based system ? , since cache memory stores adresses from main memory that is requested, aswell as adresses that ranges around the same adress as the one…

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• Compatibility between JBoss Cache to JBoss Server

  - by Spiderman

  Our application runs succesfully on Tomcat, Websphere and Weblogic and as part of it uses Jboss Cache version 3.1.0.G. Now we would like adjust our app to run also in Jboss server environment. Is there any Jboss server version that can co-exist working…

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• How to clear browser's cache from server side?

  - by Dunith Dhanushka

  I have to create a web application that deals with user's sensitive information. I need to immediately clear the browser's cache after user logs out since cached data would be vulnerable. Client's browser should be enforced to clear the Cache from server…

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• Browser Cache API for non IE browsers

  - by MaxK

  IE has WinInet API, such as GetUrlCacheEntryInfo, to read and manipulate IE browser cache. Is there a similar API for non IE browsers such as Firefox or Chrome? If so where can I get more info? Thanks Update: According to following…

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• Several Small, Specific, MySQL Query Cache Questions

  - by Robbie

  I've look all over the web and in the questions asked here about MySQL caching and most of them seem very non-specific about a couple of questions that I have about performance and MySQL query caching. Specifically I want answers to…

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• How to clear the entire second level cache in NHibernate

  - by Bittercoder

  I wish to clear the entire second level cache in NHibernate via code. Is there a way to do this which is independent of the cache provider being used? (we have customers using both memcache and syscache within the same application).…

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• THE FASTEST Smarty Cache Handler

  - by rob.effect

  Does anyone know if there is an overview of the performance of different cache handlers for smarty? I compared smarty file cache with a memcache handler, but it seemed memcache has a negative impact on performance. I figured there…

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