caching

问题 I would like to determine if the response from NSURLSessionDataTask came from cache, or was served from server I'am creating my NSURLSessionDataTask from request.cachePolicy = NSURLRequestUseProtocolCachePolicy; 回答1: Two easy options come to mind: Call [[NSURLCache sharedURLCache] cachedResponseForRequest:request] before you make the request, store the cached response, then do that again after you finish receiving data, and compare the two cached responses to see if they are the same. Make an

问题 I have an annoying problem with my new grails app. I'm trying to mock up a design for a site that I will be making but whenever I do changes in my css it won't affect the running application. No matter how big changes I do I have to stop the application and then run it again. This is very frustrating, I've turned of cache in Chrome and even if I go to the specific document the resource is still the old. What can I do to solve this problem? I can make changes in my gsp files and the changes

问题 I have an annoying problem with my new grails app. I'm trying to mock up a design for a site that I will be making but whenever I do changes in my css it won't affect the running application. No matter how big changes I do I have to stop the application and then run it again. This is very frustrating, I've turned of cache in Chrome and even if I go to the specific document the resource is still the old. What can I do to solve this problem? I can make changes in my gsp files and the changes

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . EDIT: Answer provided below. I've struggled for a couple of days to understand why Mozilla Firefox continually failed to retrieve images from its' cache as opposed to fetching new copies everytime I reloaded a page. Google Chrome didn't appear to have this issue, but that's because refreshing the page in Chrome

问题 I'm using IDbCommandTreeInterceptor to implement soft-delete functionality. Inside standard TreeCreated method I check whether given query command contains models with soft-delete attribute. If they do and user requested to fetch soft deleted object too --- I call my soft-delete visitor with querySoftDeleted = true . This will make my query return all object, those with true and those with false values on IsDeleted property. public class SoftDeleteInterceptor : IDbCommandTreeInterceptor {

问题 I'm writing a web service for my application and want to know the best way to handle the possibly tons of requests I might get. A lot of the data probably won't change throughout the day but the particular script I'm writing makes 3 MySQL queries which seem a little excessive considering the data will probably be the same as the last request to the script, and if it's not the same then it's no big deal. Will performance be much better if I save the output XML/JSON to a file and then serve it

问题 I am very new in Apache Configuration and caching. I want set some headers in Apache (eg max-age, min-fresh, last modified etc). Have checked Modules are there and there installed and loaded.... Have edited httpd.conf and re-started the same after making some changes regarding caching headers. e.g. <FilesMatch "\.(ico|pdf|flv|jpe?g|png|gif|js|css|swf)$"> ExpiresActive On ExpiresDefault "access plus 1 year" </FilesMatch>` Header unset ETag FileETag None <FilesMatch "(?i)^.*\.(ico|flv|jpg|jpeg

问题 I'm trying to figure out how to calculate the miss rate of an array. I have the answer, but I'm not understanding how the answer was arrived at. I have the following code: int C[N1][N2]; int A[N1][N3]; int B[N3][N2]; initialize_arrays(A, B, C, N1, N2, N3); for(i=0; i<N1; ++i) for(j=0; j<N2; ++j) for(k=0; k<N3, ++k) C[i][j] += A[i][k] * B[k][j]; I also have the following info: N1=N2=N3=2048 (what does this mean??). The processor has an L1 data cache of 32kB with line size of 64B (no L2 cache).

问题 I am trying to make an eviction of an entry in a Spring-managed cache (Spring 3.1 abstraction). I need to refer to the returned value of the method in the SpEL of the "key" property in the annotation: /* (How to refer to the 'T' returned value in the "KEY_ID"?) */ @Caching(evict = { @CacheEvict(value = CACHE_BY_ID, key = KEY_ID) }) public T delete(AppID appID, UserID userID) throws UserNotFoundException { return inner.delete(appID, userID); } Is there any way to do this? 回答1: It doesn't seem

问题 plz i need some help here , i've goolged a lot but without result :/ how can i exploit the query and their result stored in the memcache , i'm working with zend framework 2 and doctrine 2 ? and here is my configuration in module.config.php : // Doctrine config 'doctrine' => array( 'driver' => array( __NAMESPACE__ . '_driver' => array( 'class' => 'Doctrine\ORM\Mapping\Driver\AnnotationDriver', 'paths' => array(__DIR__ . '/../src/' . __NAMESPACE__ . '/Entity') ), 'orm_default' => array(