caching

问题 I'm trying to come up with an example program which would have a high cache-miss rate. I thought I could try accessing a matrix column by column like so: #include <stdlib.h> int main(void) { int i, j, k; int w = 1000; int h = 1000; int **block = malloc(w * sizeof(int*)); for (i = 0; i < w; i++) { block[i] = malloc(h * sizeof(int)); } for (k = 0; k < 10; k++) { for (i = 0; i < w; i++) { for (j = 0; j < h; j++) { block[j][i] = 0; } } } return 0; } when I compile this with -O0 flag and run using

问题 I'm trying to come up with an example program which would have a high cache-miss rate. I thought I could try accessing a matrix column by column like so: #include <stdlib.h> int main(void) { int i, j, k; int w = 1000; int h = 1000; int **block = malloc(w * sizeof(int*)); for (i = 0; i < w; i++) { block[i] = malloc(h * sizeof(int)); } for (k = 0; k < 10; k++) { for (i = 0; i < w; i++) { for (j = 0; j < h; j++) { block[j][i] = 0; } } } return 0; } when I compile this with -O0 flag and run using

问题 System's not able to recognized any changes in my CSS and javascript files that are deployed from staging to production environment. I'm sure that I'm editing the correct file and path, even test alert is not working. It looks like the files have been cached but after clearing my cache, still no luck. We're using Umbraco CMS. Any idea? Am I missing anything? 回答1: @lyka you can try adding a version on your js links <script src="/scripts/prechat/emea-locale-json.js?v=20160223" type="text

问题 I have a WCF service that caches certain data and uses it to respond to web requests. To deal with this requirement, I made the service a Singleton (using InstanceContextMode.Single and ConcurrencyMode.Multiple (yes, it's threadsafe)). I've tried to set the timeout of the service to its maximum using the following binding: <binding name="WebHttpBinding" receiveTimeout="24.20:31:23.6470000"> <security mode="TransportCredentialOnly"> <transport clientCredentialType="None" /> </security> <

问题 I have a WCF service that caches certain data and uses it to respond to web requests. To deal with this requirement, I made the service a Singleton (using InstanceContextMode.Single and ConcurrencyMode.Multiple (yes, it's threadsafe)). I've tried to set the timeout of the service to its maximum using the following binding: <binding name="WebHttpBinding" receiveTimeout="24.20:31:23.6470000"> <security mode="TransportCredentialOnly"> <transport clientCredentialType="None" /> </security> <

问题 My spring boot app has many complex objects of type Map<String, List<Car>> that I like to cache somewhere. I don't want to use a static variable within the program for that, as if the application will run behind a load balancer, each instance might get different results from its own memory cache, and changes in one application will not take effect in the other. So I was looking at Redis & its Jedis client, but it seems like we can only cache items in a map with the type of <String, String>

问题 My spring boot app has many complex objects of type Map<String, List<Car>> that I like to cache somewhere. I don't want to use a static variable within the program for that, as if the application will run behind a load balancer, each instance might get different results from its own memory cache, and changes in one application will not take effect in the other. So I was looking at Redis & its Jedis client, but it seems like we can only cache items in a map with the type of <String, String>

问题 My spring boot app has many complex objects of type Map<String, List<Car>> that I like to cache somewhere. I don't want to use a static variable within the program for that, as if the application will run behind a load balancer, each instance might get different results from its own memory cache, and changes in one application will not take effect in the other. So I was looking at Redis & its Jedis client, but it seems like we can only cache items in a map with the type of <String, String>

问题 I have created a image crop facility that I can click on an image and crop it and it saves the new cropped image over the old one, then redirects back to the original page where the image was show. But it still shows the old image even after a redirect and doesn't display the new one till I refresh the page. I have tried just using an image tag and removing the asset timestamp after the image but it still displays the old image and I have also tried adding meta tags to stop browser caching

问题 I have created a image crop facility that I can click on an image and crop it and it saves the new cropped image over the old one, then redirects back to the original page where the image was show. But it still shows the old image even after a redirect and doesn't display the new one till I refresh the page. I have tried just using an image tag and removing the asset timestamp after the image but it still displays the old image and I have also tried adding meta tags to stop browser caching