cache-invalidation

Invalid paths using CloudFront create invalidation in C#

由 时光怂恿深爱的人放手 提交于 2021-01-27 05:57:30
问题 I am trying to invalidate CloudFront objects in C#/.NET and gettign the following exception: Your request contains one or more invalid invalidation paths. My Function: public bool InvalidateFiles(string[] arrayofpaths) { for (int i = 0; i < arrayofpaths.Length; i++) { arrayofpaths[i] = Uri.EscapeUriString(arrayofpaths[i]); } try { Amazon.CloudFront.AmazonCloudFrontClient oClient = new Amazon.CloudFront.AmazonCloudFrontClient(MY_AWS_ACCESS_KEY_ID, MY_AWS_SECRET_KEY, Amazon.RegionEndpoint

Why does CLFLUSH exist in x86?

由 眉间皱痕 提交于 2020-06-09 17:57:45
问题 I recently learned about the row hammer attack. In order to perform this attack the programmer needs to flush the complete cache hierarchy of a CPU for a specific number of addresses. My question is: why is CLFLUSH necessary in x86? What are the reasons for ever using this instruction, if all L* caches act transparently (i.e., no explicit cache invalidation needed)? Besides that: isn't the CPU free to speculate memory access patterns, and thereby ignore the instruction altogether? 回答1: I

Force browser to clear cache in Angular environment

由 依然范特西╮ 提交于 2019-12-21 04:35:14
问题 There is a popular question on how to force-clear the cache of the browser in a VanillaJS application, with the general consensus being, setting the name of the .js-script or the scripts arguments to a new value: Force browser to clear cache How can I achieve this with Angular (currently 5.1 in AngularCLI/Webpack build), so every time I release the code in production (with AOT), a new version is built? I would use date-hashing instead of indexing, but the main question is: where can I set it

Cache Invalidation — Is there a General Solution?

由 一曲冷凌霜 提交于 2019-12-17 07:59:30
问题 "There are only two hard problems in Computer Science: cache invalidation and naming things." Phil Karlton Is there a general solution or method to invalidating a cache; to know when an entry is stale, so you are guaranteed to always get fresh data? For example, consider a function getData() that gets data from a file. It caches it based on the last modified time of the file, which it checks every time it's called. Then you add a second function transformData() which transforms the data, and

How to invalidate cache when benchmarking?

由 我怕爱的太早我们不能终老 提交于 2019-12-04 05:25:14
问题 I have this code, that when swapping the order of UsingAs and UsingCast, their performance also swaps. using System; using System.Diagnostics; using System.Linq; using System.IO; class Test { const int Size = 30000000; static void Main() { object[] values = new MemoryStream[Size]; UsingAs(values); UsingCast(values); Console.ReadLine(); } static void UsingCast(object[] values) { Stopwatch sw = Stopwatch.StartNew(); int sum = 0; foreach (object o in values) { if (o is MemoryStream) { var m =

Force browser to clear cache in Angular environment

由 折月煮酒 提交于 2019-12-03 13:18:11
There is a popular question on how to force-clear the cache of the browser in a VanillaJS application, with the general consensus being, setting the name of the .js-script or the scripts arguments to a new value: Force browser to clear cache How can I achieve this with Angular (currently 5.1 in AngularCLI/Webpack build), so every time I release the code in production (with AOT), a new version is built? I would use date-hashing instead of indexing, but the main question is: where can I set it (eg the script name/arguments)? In development, where the CLI takes care of rebuilding the app, this is

Get a string that represents a user's CanCan abilities

由 五迷三道 提交于 2019-12-03 05:19:28
问题 I want to cache a Post view, but the view depends on the permissions of the current user (e.g., I only show the "edit" link if current_user.can?(:edit, @post) ) So I'd like my cache key to include a representation of the current user's CanCan abilities, so that I can invalidate the cache when the user's abilities change SO: how can I get a string that represents the current user's abilities such that 2 different users with the same abilities will generate the same "ability string"? I've tried

How to invalidate cache when benchmarking?

由 你说的曾经没有我的故事 提交于 2019-12-02 06:35:57
I have this code, that when swapping the order of UsingAs and UsingCast, their performance also swaps. using System; using System.Diagnostics; using System.Linq; using System.IO; class Test { const int Size = 30000000; static void Main() { object[] values = new MemoryStream[Size]; UsingAs(values); UsingCast(values); Console.ReadLine(); } static void UsingCast(object[] values) { Stopwatch sw = Stopwatch.StartNew(); int sum = 0; foreach (object o in values) { if (o is MemoryStream) { var m = (MemoryStream)o; sum += (int)m.Length; } } sw.Stop(); Console.WriteLine("Cast: {0} : {1}", sum, (long)sw

Error:Cause: invalid stream header: 000900D9 in android studio 2.3.1

由 為{幸葍}努か 提交于 2019-11-30 17:32:22
I am using android studio 2.3.1 and it was working fine yesterday But now it throw me an error Error:Cause: invalid stream header: 000900D9 this message throw from Messages Gradle Sync dialog . Below are the steps which i did to fixed this problem but nothing works for me 1.invalidate cache and restart Delete scripts and scripts-remapped files from C:\Users\suraj.gradle\caches\3.3 and also checked many post in stackoverflow but nothing work for me and most of the questions put here are not answered by anyone yet . Under my project structure Compile Sdk version :Api 25 Build tool version :25.0

Error:Cause: invalid stream header: 000900D9 in android studio 2.3.1

由 泄露秘密 提交于 2019-11-30 01:16:41
问题 I am using android studio 2.3.1 and it was working fine yesterday But now it throw me an error Error:Cause: invalid stream header: 000900D9 this message throw from Messages Gradle Sync dialog . Below are the steps which i did to fixed this problem but nothing works for me 1.invalidate cache and restart Delete scripts and scripts-remapped files from C:\Users\suraj.gradle\caches\3.3 and also checked many post in stackoverflow but nothing work for me and most of the questions put here are not
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