caching

问题 I'm trying to implement functionality to cache certain pages depending on the host. This is because I can have multiple versions of a page which have the same parameters, and where the only difference in terms of a request is the host that is being requested. So, for example these two URLs will request the same page, but they are styled differently: http://www.a.com/something/specific and http://www.b.com/something/specific I'm going through the example outlined here: http://msdn.microsoft

问题 Considering that max-age applies to all the caches, and s-maxage only applies to shared caches (proxy and gateway cache).... Does it make sense to use both directives in a non-expirable and public page? Controller pseudo-code: w = Response(); w.setPublic(); w.setMaxAge("1 year"); w.setShareMaxAge("1 year"); return w; 回答1: From HTTP Header Field Definitions: 14.9.3 Modifications of the Basic Expiration Mechanism ... s-maxage If a response includes an s-maxage directive, then for a shared cache

问题 I wrote a PHP script to dynamically pack files selected by the client into zip file and force a download. It works well except that when the number of files is huge (like over 50000), it takes a very long time for the download dialog box to appear on the client side. I thought about improving this using cache (these files are not changed very often), but because the selection of the files are totally decided by the user, and there are tens of thousands of combinations on the selection, it is

问题 I wrote a PHP script to dynamically pack files selected by the client into zip file and force a download. It works well except that when the number of files is huge (like over 50000), it takes a very long time for the download dialog box to appear on the client side. I thought about improving this using cache (these files are not changed very often), but because the selection of the files are totally decided by the user, and there are tens of thousands of combinations on the selection, it is

问题 Can anyone explain a best practice approach to implementing a cache buster in SASS? Meaning, on 'compilation' of my CSS, it appends a timestamp to images files. E.g., The following SASS code: !sprite="gubs.gif" ul li.selected :background :image= image_url(!sprite) :repeat no-repeat :position= "right" -222px Should produce: ul li.selected { background: url(../images/gubs.gif?123456789) no-repeat right -222px } In the ruby tool juicer, this is automatically done for you. But I can't seem to

问题 I am working on a webView in an app, where content which webview load changes when a button is pressed (two buttons next and previous , they just change the content in webview). But after pressing 3 -4 times it starts to hang there is nothing printed on logcat, the button remains pressed for 15-20 sec and then the next data is loaded. I have used these to clear out webview.db and cache:- context.this.deleteDatabase("webview.db"); context.this.deleteDatabase("webviewCache.db"); webView

问题 I am working on a webView in an app, where content which webview load changes when a button is pressed (two buttons next and previous , they just change the content in webview). But after pressing 3 -4 times it starts to hang there is nothing printed on logcat, the button remains pressed for 15-20 sec and then the next data is loaded. I have used these to clear out webview.db and cache:- context.this.deleteDatabase("webview.db"); context.this.deleteDatabase("webviewCache.db"); webView

问题 I'm creating some kind of an 'ready to be extended' admin panel. What I'm trying to do is a module for extending some admin panel features by downloading a proper bundle and install it from within admin panel. I have prepared an additional gallery module and I don't wan to enable it with the standard version of admin panel (or even deploy this bundle to the prod server). The extra gallery bundle should only be installed from, let's say an admin panel/modules site. Where user could upload the

问题 Hi I've got an app with a code size of approximately 1/2mb. The app includes a webview for showing several pages. My cache therefore ends up at 2,5mb. Not much but enough. How can I clear my cache onDestroy? Thx! 回答1: put this code in onDestroy() for clear app cache @Override protected void onDestroy() { super.onDestroy(); try { trimCache(this); // Toast.makeText(this,"onDestroy " ,Toast.LENGTH_LONG).show(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } }

问题 I need to get expire or creation time for cache entry. This is for: sitemap index, each sitemap in index is cached action. I want to add <lastmod> attribute, which, in my case, will be cache entry creation time. For example for action caching: class ProductsController < ActionController caches_action :index def index @products = Product.all end end I need something like this: Rails.cache.get(:controller=>'products',:action=>'index').created_at 回答1: I found solution, which work with all