caching

问题 Can I access the ASP.NET Cache object from Application_Start? I was previously using it in a page render. I though it might be available as an object under the 'Server' object but no luck. 回答1: Use HttpRuntime.Cache. 来源： https://stackoverflow.com/questions/1722360/where-can-i-access-there-asp-net-application-cache-from-global-application-start

问题 When I try to cache an ActiveRecord object that has a has_many through: relationship, I can't cache the object until I reload or save it. person.rb: class Person < ActiveRecord::Base attr_accessible :name has_many :person_locations has_many :locations, through: :person_locations has_many :person_items has_many :items, through: :person_items end person_item.rb: class PersonItem < ActiveRecord::Base attr_accessible :item_id, :person_id belongs_to :item belongs_to :person end item.rb: class Item

问题 I'm trying to build and run WindowsServerAppFabricSamples CacheAPISample application. I had to install Microsoft.WindowsAzure.Caching version 2.3.1.0 from nuget to build. My config is: <?xml version="1.0" encoding="utf-8"?> <configuration> <configSections> <section name="dataCacheClients" type="Microsoft.ApplicationServer.Caching.DataCacheClientsSection, Microsoft.ApplicationServer.Caching.Core" allowLocation="true" allowDefinition="Everywhere"/> <section name="cacheDiagnostics" type=

问题 I have a jquery slideshow and built a pre-load function: function preload_images(){ var pre_image = curr_img - 1; if(pre_image < 0) pre_image = (tot_elements-1); var curr_obj = 0; if(!$('#img_preloaded_'+pre_image).length > 0){ curr_obj = slideshow[pre_image]; $('.preload_left').append('<img src="'+curr_obj["img_url"]+'" id="img_preloaded_'+pre_image+'" class="preload_box" />'); } var pre_image = curr_img + 1; if(tot_elements==pre_image) pre_image = 0; if(!$('#img_preloaded_'+pre_image)

问题 I'm creating multiple Caffeine caches like: @Bean public Cache<String, Customer> customerCache() { return Caffeine.newBuilder() .maximumSize(10_000) // other config settings .build(..); } Now I would like to use something like a @ConfigurationProperties(prefix = "cache.customer") to set the builder config options. Where a application property cache.customer.maximum-size: 1000 exists. Is there something smart I can do to map the @ConfigurationProperties to the Caffeine builder? 回答1: You can do

问题 Since we're developing a web-based project using django. we cache the db operation to make a better performance. But I'm wondering whether we need cache the array. the code sample like this: ABigArray = { "1" : { "name" : "xx", "gender" "xxx", ... }, "2" : { ... }, ... } class Items: def __init__(self): self.data = ABigArray def get_item_by_id(self, id): item = cache.get("item" + str(id)) # get the cached item if possible if item: return item else: item = self.data.get(str(id)) cache.set(

问题 I have noticed that some browsers (in particular, Firefox and Opera) are very zealous in using cached copies of .css and .js files, even between browser sessions. This leads to a problem when you update one of these files but the user's browser keeps on using the cached copy. The question is: what is the most elegant way of forcing the user's browser to reload the file when it has changed? Ideally, the solution would not force the browser to reload the file on every visit to the page. I will

问题 I’m finding that Nginx does not have features that I would consider basic, like send an Age header from proxy cache. In order to don’t let a browser store a cache which is max-age 60min, for 60min more if it’s already 59min old. I want to send an Age Header. (I prefer to use the same max-age for browsers and proxies) I came up with this solution, but I feel is a little bit ghetto, so I would like your opinions. I had to use LUA and then map{} because there was no other way I could make any

问题 I'm using javascript to dynamically load any of a series of images into a single img tag, based on user interaction: function reassignImage(newSource) { img.src = newSource; } This works great, except that I when I inspect it with Chrome developer tools, I see that even if I reload an image I've already loaded, it makes another http call AND grows the total Images Size graph. This seems like the worst of both worlds. I would want either: To load from cache if the image were the same. To

问题 I'm using javascript to dynamically load any of a series of images into a single img tag, based on user interaction: function reassignImage(newSource) { img.src = newSource; } This works great, except that I when I inspect it with Chrome developer tools, I see that even if I reload an image I've already loaded, it makes another http call AND grows the total Images Size graph. This seems like the worst of both worlds. I would want either: To load from cache if the image were the same. To