caching

问题 I'm currently involved in an ASP.NET project where I need to restrict the users ability to go back in the page structure using the back button. It is essentially a wizard style navigation and I don't want to give the user the ability to go back from the last step and re-submit the data. JavaScript is not an option unfortunately, so I "solved" it by setting the HttpCacheability in every pages Load event to NoCache. This gives the user the "Page expired" page when he or she clicks the back

问题 I have a UIViewController which contains a UIWebView . i login to a website for say facebook using the UIWebview in the UIViewController then i click on done, which dismiss the view controller, which i suppose will release the view controller. but when i open the UIWebview again (without exiting the app and also even after terminating the app) the webpage is still log into Facebook after the web view loads. How should i release the web view so that every time i click on done and return back

问题 What are the pros and cons of each? Please advice when to use one and not the other. 回答1: Data storage Pub/Sub is a Publisher/Subscriber platform, it's not data storage. Published messages evaporate, regardless if there was any subscriber. In Redis Streams, stream is a data type, a data structure on its own right. Messages or entries are stored in memory and stay there until commanded to be deleted. Sync/Async communication Pub/Sub is synchronous communication. All parties need to be active

问题 What are the pros and cons of each? Please advice when to use one and not the other. 回答1: Data storage Pub/Sub is a Publisher/Subscriber platform, it's not data storage. Published messages evaporate, regardless if there was any subscriber. In Redis Streams, stream is a data type, a data structure on its own right. Messages or entries are stored in memory and stay there until commanded to be deleted. Sync/Async communication Pub/Sub is synchronous communication. All parties need to be active

问题 SCENARIO: I have a java web app running in the latest Tomcat 6. I also have a single servlet filter that provides authentication. I support BASIC auth and it appears to work fine - most of the time. The first time a browser [pick any one - IE, FireFox, Opera, Safari, Chrome] hits one of our protected URL(s), it displays the standard browser-specific login prompt. IFF you enter the proper username/password - everything is fine, a new session is created, and everything operates normally. IF,

问题 I have a Spring Boot 2 application where static resources are: src |- main |-resources |-static |-js/myjs.js |-style |-css/mycss.css In my template file: <link rel="stylesheet" type="text/css" href="/style/css/mycss.css"> <script src="/js/myjs.js"></script> This is working fine. However I want to enable browser cache and gzip transfer. To do this I have created the following WebConfig: @Configuration public class WebConfig implements WebMvcConfigurer { @Override public void

问题 I'm trying to get new content from a Joomla website or Yii web application, and we're using varnish on server side. How to bypass varnish cache control so that I can get the new content?. I tried to add ?cachebuster=9999 to end of url but it's not working. I can get the new content only when I'm using a proxy. Any idea? 回答1: Add the port 8080 to bypass Varnish: Example: www.example.com:8080 来源： https://stackoverflow.com/questions/26447823/how-to-bypass-varnish-cache-on-client

问题 We are planning to use Infinispan in client server mode. The architecture has many clients (client 1, client 2 and so on ) and a distributed infinispan network. We need to update the data in the cache periodically, say every5 hours . All clients could be able to update the data. If one of them (say client 1) is updating we need to prevent others doing the same job. Once the updating is complete all clients wait another 5 hour and, any of them will do the the updating again. Infinispan

问题 I have a Django app set up to use multiple caches (I hope). Is there a way to set the session to use a specific cache, or is it stuck on 'default'? Here's what i have now: CACHES = { 'default': { 'BACKEND': 'util.backends.SmartMemcachedCache', 'LOCATION': '127.0.0.1:11211', 'TIMEOUT': 300, 'ANONYMOUS_ONLY': True }, 'some_other_cache': { 'BACKEND': 'util.backends.SmartMemcachedCache', 'LOCATION': '127.0.0.1:11211', 'TIMEOUT': 300, 'ANONYMOUS_ONLY': True, 'PREFIX': 'something' }, } SESSION

问题 For my app I store map images in a cache on the external storage as to reduce calls to the API that I am using. Since this data is map data, it is subject to change over time. As a result these images should be updated every-so-often. How can I programmatically delete the cache directory periodically? Say for example, every week. Some extra thoughts: Perhaps deleting the entire directory is not the best way to go about it. Perhaps I can check the "freshness" of each image, and delete the old