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从网购到火车票，对比淘宝12306网为何如此烂？ - 大数据 & AI - 清泛网 - ...
...网站高负载的呢?据淘宝技术人员分享，淘宝的整体架构使用了如下措施来应对：一应用无状态(淘宝session框架);二有效使用缓存(Tair);三应用拆分(HSF);四数据库拆分(TDDL);五异步通信(Notify);六非结构化数据存储(TFS,NOSQL);七监控、预...
jQuery post() with serialize and extra data
... url: 'test.php',
data:$("#Test-form").serialize(),
dataType:'json',
beforeSend:function(xhr, settings){
settings.data += '&moreinfo=MoreData';
},
success:function(data){
// json response
},
error: function(data) {
// if error occur...
Mongoose, Select a specific field with find
...on, function (err, users) {
if (err) return next(err);
res.json(users);
});
}
http://docs.mongodb.org/manual/reference/method/db.collection.find/
Note:
var usersProjection
The list of objects listed here will not be returned / printed.
...
Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
...
The key: value JSON-style assignments are a part of the new Ruby 1.9 hash syntax, so bear in mind that this syntax will not work with older versions of Ruby. Also, the keys are going to be symbols. If you can live with those two constraints...
Why when a constructor is annotated with @JsonCreator, its arguments must be annotated with @JsonPro
In Jackson, when you annotate a constructor with @JsonCreator , you must annotate its arguments with @JsonProperty . So this constructor
...
Alternative for PHP_excel
...pleExcel Claims to read and write Microsoft Excel XML / CSV / TSV / HTML / JSON / etc formats
KoolGrid xls spreadsheets only, but also doc and pdf
PHP_XLSXWriter OfficeOpenXML
PHP_XLSXWriter_plus OfficeOpenXML, fork of PHP_XLSXWriter
php_writeexcel xls only (looks like it's based on PEAR SEW)
spout ...
Node.js Error: Cannot find module express
... installing winston locally in the app directory (and adding it to package.json).
– trusktr
Apr 21 '14 at 2:08
3
...
How to properly URL encode a string in PHP?
... are outputting to a text/html document. If your output media type is text/json then simply use $retval['url'] = $mailToUri; because output encoding is handled by json_encode().
Test case
Run the code on a PHP test site (is there a canonical one I should mention here?)
Click the link
Send the ema...
Chrome Extension - Get DOM content
...ment
sendResponse(document.all[0].outerHTML);
}
});
manifest.json:
{
"manifest_version": 2,
"name": "Test Extension",
"version": "0.0",
...
"background": {
"persistent": false,
"scripts": ["background.js"]
},
"content_scripts": [{
"matches": ["*://*.stackove...
JavaScript global event mechanism
...ith', 'XMLHttpRequest');
xhr.setRequestHeader('Content-Type', 'application/json');
xhr.onload = function() {
if (xhr.status === 200) {
console.log('JS error logged');
} else if (xhr.status !== 200) {
console.error('Failed to log JS error.');
console.error(xhr);
...