caching

Cache data. Sql and Sybase

Hey all, Ive been tasked to upgrade our existing extranet from .net 2.0 to 3.5. One of the main issues i had during the build phase for the 2.0v was the data was coming from SQL server 2005 and a legacy db in Sybase 9. To achieve this i basically made to Dataset's accordingly based on SPROCS and a third DS to merge. This then would...

Redirect within Ajax call

I need to redirect an Ajax call without letting the client know. getPage.php is an application which returns html etc. for a given query. getPage.php?hash=interesting-article-title and getPage.php?page=3 returns the same. To avoid the client from having to cache both of these I would like getPage.php?hash=interesting-article-title to ...

Web page expired message in browser

I am implementing a web application using ASP .Net and C#. One of the pages has a requirement that it always needs to be fetched from the server, rather than from the local browser cache. I have been able to achieve this. We have a back button in the application, which simply invokes javascript:history.back() method. The problem is tha...

Cache-Control Header Modified By PHP Session?

I'm outputting an image to the browser using a Zend_Controller_Response object. It is my intention to apply caching to the image, however something is causing the Cache-Control header to be overwritten. My code is as follows: $this->getResponse() ->setHeader('Last-Modified', $modifiedTime, true) ->setHeader('ETag', md5($modifi...

trying to store java objects in contiguous memory

Hi all, I am trying to implement a cache-like collection of objects. The purpose is to have fast access to these objects through locality in memory since I'll likely be reading multiple objects at a time. I currently just store objects in a java collections object like vector or deque. But I do not believe this makes use of contiguou...

Determine whether memory location is in CPU cache.

It is possible for an operating system to determine whether a page of memory is in DRAM or in swap; for example, simply try to access it and if a page fault occurs, it wasn't. However, is the same thing possible with CPU cache? Is there any efficient way to tell whether a given memory location has been loaded into a cache line, or to ...

Configuration Issue with rails gem nkallen-cache-money (0.2.5): Get RecordNotFound exception on find method

I installed nkallen's cache-money gem per the github readme. I run into RecordNotFound exceptions during my tests. If I comment out the contents of config/initializers/cache-money.rb, the tests run fine. My cache-money.rb file is identical to that on the github instructions. Here is the contents of my config/memcached.yml: development:...

DB Index speed vs caching

We have about 10K rows in a table. We want to have a form where we have a select drop down that contains distinct values of a given column in this table. We have an index on the column in question. To increase performance I created a little cache table that contains the distinct values so we didn't need to do a select distinct field...

How can I manage a cache texture in OpenGL?

I am writing a text renderer for an OpenGL application. Size, colour, font face, and anti-aliasing can be twiddled at run time (and so multiple font faces can appear on the screen at once). There are too many combinations to allocate one texture to each combination of string and attributes. However, only a small subset of the entire d...

Load fresh swf from server

I have a main flash from wich i load another swf file from the server. From time to time i change the second swf file and want to load a fresh copy from the server. I clean the cache from the browser but my client does not know how to do that and it's a pain to give him directions. If i want to load a fresh copy of the main swf i just ad...

Is there Cache with Linq query support

Is there Cache preferably a distributed cache with Linq query support? ...

Any Java caches that can limit memory usage of in-memory cache, not just instance count?

I am looking for a simple in-memory (and in-process) cache for short-term caching of query data (but short-term meaning beyond request/response, i.e. session boundary). EhCache would probably work, but it looks as if it might not offer one thing that I need: limits not on number of objects cached, but (approximate) limit on amount of mem...

Lazy loading/caching of SQL query results with a model

I'm developing a system (with Rails 2.3.2, Ruby 1.8.7-p72) that has a sizable reporting component. In order to improve performance, I've created a Report model to archive old reports. The idea is that if a matching report already exists for an arbitrary set of conditions then use it, otherwise generate the report and save the results. ...

How do HTTP proxy caches decide between serving identity- vs. gzip-encoded resources?

An HTTP server uses content-negotiation to serve a single URL identity- or gzip-encoded based on the client's Accept-Encoding header. Now say we have a proxy cache like squid between clients and the httpd. If the proxy has cached both encodings of a URL, how does it determine which to serve? The non-gzip instance (not originally serve...

Which .NET Memcached client do you use, EnyimMemcached vs. BeITMemcached?

Seems like both EnyimMemcached (http://enyimmemcached.codeplex.com/) and BeITMemcached (http://code.google.com/p/beitmemcached/) are popular .NET Memcached libraries. Both are reasonably active projects under development and have over a thousand downloads. Trying to figure out which one to use but found competing remarks! I did read ano...

What is the relationship between NFS and caching?

This seems like it should be blindingly obvious, but I cannot see the answer. Does NFS have caching? How does it work? Does it simply leverage your operating system/filesystem caching? Does it depend on the client or server you are using? I'm using NFS as a client on Solaris with no special mount options. ...

How to prevent caching of static files in embedded Jetty instance?

I want to prevent my CSSs from being cached on the browser side. How can I do it in embedded Jetty instance? If I were using xml configuration file, I would add lines like: <init-param> <param-name>cacheControl</param-name> <param-value>max-age=0,public</param-value> </init-param> How I can turn that into the code? Right now I ...

Java Web Application: How to implement caching techniques?

I am developing a Java web application that bases it behavior through large XML configuration files that are loaded from a web service. As these files are not actually required until a particular section of the application is accessed, they are loaded lazily. When one of these files are required, a query is sent to the webservice to retr...

Caching solutions and Querying

Are there any in-memory/caching solutions for java that allow for a form of Querying for specific attributes of objects in the Cache? I realize this is something that a full blown database would be used for, but I want to be able to have the speed/performance of a cache with the Querying ability of a database. ...

iPhone WebApp cache

Hi, I've made a simple Web Application for the iPhone, it's just 6 pages each with an image on it and I use the Cube transition to switch between them, all static content. I need this to work on an iPod Touch offline, i.e. visit it once, disconnect from WiFi, and then be able to browse the static site. I'm trying to do this using the H...