In IIS6, I notice that when "Enable content expiration" is not enabled, no cache-related or expiration headers are sent with the response. Yet static content, such as css files are properly returning 304 statuses on subsequent visits. When does this content expire if nothing is specified? Is it browser dependent? ...
It seems that in order to force users to refresh cached static files (e.g., .css, .js) some sites (e.g., stackoverflow.com) append querystrings to the end of files. For example: <link rel="stylesheet" type="text/css" href="http://sstatic.net/stackoverflow/all.css?v=9ea1a272f146"> I think this is a good idea, and am inclined to sta...
Hi guys As you know checking process of web pages content is a little different from static pages or personal files on our machines because content of Dynamic web pages are changed on each request. So if we are going to use checksums to identifying changes, We'll fail! very simple example is when site owner are use Google Ads on him webs...
Maybe it has been asked somewhere, but I am trying to find my question and I am not able to find any answer. Here's my question: I am developing a web application and because of some major JavaScript issue in IE8, I need the user to run "Google Chrome Frame" (To enhance the speed of the web page). I was impressed that my page was work...
I've 2 servers mirror with a load balancer. I'd like to know the pros and cons of sticking with app cache versus going with something like memcache? I'm very interested in various solutions and especially the types of errors that I could get or limitations by not synchronizing them. To start the discussion, I'd hazard that using ASP.NET...
I'm just starting to look in to caching to improve performance and have a question about caching for an AJAX call. I have a action which is used to query twitter and then return the results. At the moment when a user presses a button it loads a rotating gif whilst it goes off to the action to do the query and then return a partial view....
I want ask : if cache too many page 10000 page is cached. 10000 page create 10000 file cache. Is it ok ? it can create slow? ...
Do you prefer the clean approach of an AOP cache layer on top of your methods (any DAO or service method) OR do you prefer the total control approach of injecting a cache instance wherever you need? I understand AOP gives you loose coupling and separation of concerns, but not so much flexibility, unless you are coding the method interce...
What's the general best practice to deal with something like this.. ##Post controller def show @post = get_from_memcache end ##show.html.erb <div><%= post.body%></div> <div><%= post.created_at%></div> <div><%= post.category%></div> <div><%= Post.favorites_count%></div> The get_from_memcache return a @post object from a cache that...
Hi, I am creating a site that allows users to search a static text file. The file is large static data txt file (10mb) that needed to be access/read every time a user searches (which is hopefully often). Is there a way/technique that loads the content of the file and stored it in memory (and assigned a variable to it) permanently so t...
Hi guys, How long is Facebook caching the sharing thumbnails? I've added a custom thumbnail for my page using: <meta property="og:image" content="/path/to/my/image" /> But on pages I've already displayed before my image is not displayed => it is cached somewhere on FB servers. Any ideas how to flush that cache or how long does it ta...
http://book.cakephp.org/view/1382/Clearing-the-Cache It is important to remember that the Cake will clear a cached view if a model used in the cached view is modified. For example, if a cached view uses data from the Post model, and there has been an INSERT, UPDATE, or DELETE query made to a Post, the cache for that view is cleared, ...
Hi Recently I had corrupted font cache. I fixed it by removal of cache file and restarting of Wpf font cache service. Also I updated my outdated driver. However there're lot's of users on customer side without administrative rights and there're no way to upgrade their pretty old drivers of videocards. Could you say me what if i embed ...
I'm working on what is essentially the runtime for a large administrative application. The actual logic that is being executed, as well as the screens being shown and the data operated upon is stored in a central database. In order to improve performance, the runtime keeps data queried from the database in various caches. However, it is...
Here's the problemo: My Silverlight application is calling a HTTP web service, using WebClient, called getCampaigns which returns a JSON array of data for Campaign objects. The user can then interact with the requested objects, modifying them, removing them, etc. When the user removes a campaign, Silverlight calls another web service, w...
I gathered from the much famed scaling rails screencasts that at some point when your site gets big and bigger, proxy caching is the way to go. Proxy caching uses etag, among other things and since etags can be more specific and strong validator is perhaps the way to go. However, I also hear that in server farm scenarios the etag is not...
Currently I use nginx + passenger for serving my rails app. I have been doing some research on reverse proxies and a few names pop up (squid, varnish and nginx mostly). 1 - Now If I am using nginx as my web server can I stil use it as my reverse proxy? 2 - The general sense is that most sites use nginx for proxying static content and a...
Hi, Is there a technique that I can use in Rails so that whenever a simple "find" is performed on a Model object, memcached is first searched for the result, only if no result is found will a query by then made to the database? Ideally, I'd like the solution to be implicit, so that I can just write Model.find(id), it first checks the c...
I have 2 functions: first public String doA(Integer userId, String someValue) that I want to cache (taking into account parameters of function), and second public String doB(Integer userId) that should drops cache of function "doA" for current userId. Does Ehcache support something like memcached tags or anything other that can he...
I have an Android application which uses sqlite database to store textual data for a particular user. The data is read/written from/to the database from a service that runs periodically after every n seconds. My requirement is to clear data depending on age. Like, if the file is more than 24 hours old it should be deleted. Checking th...