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CDN（内容分发网络）技术原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，缓存服务器可以处理大部分客户的静态请求，而原始的WWW服务器只需处理约20%左右的非缓存请求和动态请求，于是大大加快了客户请求的响应时间，并降低了原始WWW服务器的负载。根据美国IDC公司的调查，作为CDN的一项重要指...
Has Facebook sharer.php changed to no longer accept detailed parameters?
... the url OG meta
tags.
Use dialog/feeds instead of sharer.php
https://www.facebook.com/dialog/feed?
app_id=145634995501895
&display=popup&caption=An%20example%20caption
&link=https%3A%2F%2Fdevelopers.facebook.com%2Fdocs%2Fdialogs%2F
&redirect_uri=https://developers.face...
phonegap open link in browser
...e InAppBrowser documentation:
<a href="#" onclick="window.open('http://www.kidzout.com', '_system'); return false;">www.kidzout.com</a>
This should work, though a better and more flexible solution would be to intercept all links' click events, and call window.open with arguments read ...
Trigger change event using jquery
...nchange="window.location.href=this.value;">
<option value="http://www.google.com">Google</option>
<option value="http://www.yahoo.com">Yahoo</option>
</select>
share
|
...
Using Java with Nvidia GPUs (CUDA)
...hich are then translated into OpenCL kernels.
Language extensions
http://www.ateji.com/px/index.html : A language extension for Java that allows parallel constructs (e.g. parallel for loops, OpenMP style) which are then executed on the GPU with OpenCL. Unfortunately, this very promising project is...
How to apply a style to an embedded SVG?
...Element.contentDocument;
var styleElement = svgDoc.createElementNS("http://www.w3.org/2000/svg", "style");
styleElement.textContent = "svg { fill: #fff }"; // add whatever you need here
svgDoc.getElementById("where-to-insert").appendChild(styleElement);
It's also possible to insert a <link> ...
Access-Control-Allow-Origin error sending a jQuery Post to Google API's
...ataType:'jsonp' and adding a crossDomain:true
$.ajax({
url: 'https://www.googleapis.com/moderator/v1/series?key='+key,
data: myData,
type: 'GET',
crossDomain: true,
dataType: 'jsonp',
success: function() { alert("Success"); },
error: function() { alert('Failed!'); },
...
google oauth2 redirect_uri with several parameters
..., redirect uri is constant as set
in the app settings of Oauth.
eg :http://www.example.com/redirect.html
To pass several parameters to your redirect uri, have them stored in state
parameter before calling Oauth url, the url after authorization will send the same parameters to your redirect uri as
st...
Cluster analysis in R: determine the optimal number of clusters
...r a bend or elbow in the sum of squared error (SSE) scree plot. See http://www.statmethods.net/advstats/cluster.html & http://www.mattpeeples.net/kmeans.html for more. The location of the elbow in the resulting plot suggests a suitable number of clusters for the kmeans:
mydata <- d
wss <-...
file_put_contents(meta/services.json): failed to open stream: Permission denied
...der a default user depending on your environment it can be something like _www on OSX or www-data on *NIX systems, then the issue comes when you might have run some artisan commands and got some errors, so the artisan will write this file but with a different user because PHP on terminal is executed...