cache-control

CakePHP caching user specific query data, best practice

由 梦想的初衷 提交于 2019-12-23 03:35:12
问题 I would like to employ caching at model level in the current web application I am working on. I am comfortable with caching general things, like "latest news" or other non-user specific things like that, I am looking for some direction on caching queries which rely on user specific data. For instance, a list of a User's comments. The query will need the Users ID, and the result will only be specific to that User, so how should I cache this? More importantly, simply clearing the entire cache

nginx缓存配置及开启gzip压缩

由 a 夏天 提交于 2019-12-23 02:14:05
一：nginx缓存配置 二：nginx开启gzip 一：nginx缓存配置 在前一篇文章，我们理解过http缓存相关的知识点, 请看 这篇文章 . 今天我们来学习下使用nginx服务来配置缓存的相关的知识。 nginx配置缓存的优点：可以在一定程度上，减少服务器的处理请求压力。比如对一些图片，css或js做一些缓存，那么在每次刷新浏览器的时候，就不会重新请求了，而是从缓存里面读取。这样就可以减轻服务器的压力。 nginx可配置的缓存又有2种： 1）客户端的缓存(一般指浏览器的缓存)。 2）服务端的缓存(使用proxy-cache实现的)。 客户端的缓存一般有如下两种方式实现： 协商缓存和强缓存。具体理解什么是协商缓存或强缓存，可以看 这篇文章 . 在配置之前，我们来看下我们的项目基本架构如下： |----项目demo | |--- .babelrc # 解决es6语法问题 | |--- node_modules # 所有依赖的包 | |--- static | | |--- index.html # html页面 | | |--- css # 存放css文件夹 | | | |--- base.css # css文件，是从网上随便复制过来的很多css的 | | |--- js # 存放js的文件夹 | | | |--- jquery-1.11.3.js # jquery 文件 | |

details of MESI protocol for multicore processors

由 懵懂的女人 提交于 2019-12-22 18:15:29
问题 The details of the MESI protocol for multicore processors would be really important for me, but I can't find them anywhere. Even http://www.intel.com/content/dam/doc/manual/64-ia-32-architectures-software-developer-vol-3a-part-1-manual.pdf doesn't contain enough detail. For instance: assume a private L1 and shared L2 cache. If the state of a line is exclusive in L1, then is it exclusive in L2 too (or invalid, because only in one cache could be the state of a line exclusive)? And clearly, if

Symfony2 response - Clear cache headers on back button

由 北城余情 提交于 2019-12-22 05:58:41
问题 I have an issue with clearing my cache when back button is pressed. My header information is saying i'ts loaded from cache: Status Code:200 OK (from cache) My response is set to: $response = new Response; $response->expire(); $response->headers->addCacheControlDirective('must-revalidate', true); $response->headers->addCacheControlDirective('allow_reload', true); What am I doing wrong? None of the documentation methods seem to work... 回答1: Taking advice from this article and setting listed

Enable image caching in development mode in Rails 3.1

由 别等时光非礼了梦想. 提交于 2019-12-22 05:54:15
问题 In Rails 3.1 development mode (when using the asset pipeline), images served out of assets/images are served up with the response header "Cache Control: must-revalidate". This means that Google Chrome (and seemingly only Chrome) will attempt to re-fetch images numerous times—even during a single page view. This has resulted in screwy issues with all manners of DOM manipulation via JavaScript. To name a few: jQuery UI Draggable sometimes features a dramatic offset from the mouse cursor Adding

How can I implement CSS Cache Busting with JSF outputStylesheet?

由 强颜欢笑 提交于 2019-12-22 04:01:11
问题 In JSF page templates I use this code to include a CSS resource: <h:outputStylesheet library="css" name="mystyles.css" /> The usual way to implement CSS cache busting would be to add a version parameter, like v=123 , however this is not supported in outputStyleSheet: <h:outputStylesheet library="css" name="mystyles.css?v=123" /> will cause a JSF1064 warning and the CSS will not be found. 回答1: That's not possible without overridding the StylesheetRenderer (assuming you're on Mojarra). It does

Cloudfront cache-control headers missing

由 一曲冷凌霜 提交于 2019-12-22 03:48:43
问题 I setup Cloudfront to serve static images, js, css files for www.lottoresults.ie. I used a custom origin server. The cloudfront domain name I setup is icdn.lottoresults.ie. I set this up using Bind9 dns, with icdn.lottoresults.ie a CNAME for the cloudfront distro. That's all fine. However, for website performance optimization (Yslow, google pagespeed etc), I want to have Cache-control and Expires headers set, and I do not want Etags. To do this, I have the following in my htaccess file for

Zend - How to enable cache(MetaData) on session table?

由 只愿长相守 提交于 2019-12-21 21:33:42
问题 i am using Zend_Session_SaveHandler_DbTable to store the session in a table my profiler tells me that on each page request zend does: # Query Time (1) connect 0.0032038688659668 (2) DESCRIBE session 0.0041539669036865 (3) SELECT session .* FROM session WHERE ((( session . session_id = '7nnan8ltd6h64sigs6dlkicvh0' AND session . save_path = '' AND session . name = 'PHPSESSID'))) 0.00057697296142578 Total time : 0.008 sec when i do queries on other tables, zend DESCRIBEs them once(the first time

Nginx proxy_cache_key $request_body is ignored for large request body

由 孤者浪人 提交于 2019-12-21 08:45:07
问题 I use nginx as a reverse proxy and I would like it to cache POST requests. My back-end is correctly configured to return appropriate cache-control headers for POST requests. In nginx I have configured: proxy_cache_methods POST; proxy_cache_key "$request_method$request_uri$request_body"; This works great for small HTTP POST requests. However I started noticing that for large requests (e.g. file uploads) it seems like the $request_body is ignored in the proxy_cache_key . When a form containing

Clear browser cache in Angular

由 泪湿孤枕 提交于 2019-12-21 05:16:06
问题 I have a problem with an Angular application that I update very often. I would like to avoid the browser cache and I am trying several alternatives but none of them work. The first thing is that I have very difficult to test if the solution works because when I upload a new version, sometimes I see it without having to do more than refresh the page, and other times I need to open the console and force the refresh emptying cache. I tried to include in the request header, Cache-Control: no
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