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What scalability problems have you encountered using a NoSQL data store? [closed]
...zing.
About 2 years ago, we've released a self written software on http://www.ubuntuusers.de/ (which is probably the biggest German Linux community website). The site is written in Python and we've added a WSGI middleware which was able to catch all exceptions and send them to another small MySQL p...
How to open link in new tab on html?
... noreferrer">Link</a>
Edit: for other examples, see here: http://www.w3schools.com/tags/att_a_target.asp
(Note: I previously suggested blank instead of _blank because, if used, it'll open a new tab and then use the same tab if the link is clicked again. However, this is only because, as Go...
Why does CSS work with fake elements?
...s/spec/custom/
And here is a tutorial explaining how to use them:
http://www.html5rocks.com/en/tutorials/webcomponents/customelements/
As pointed out by @Quentin: this is a draft specification in the early days of development, and that it imposes restrictions on what the element names can be.
...
How to allow to accept only image files?
....";
$uploadOk = 0;
}
}
For more reference, see here
http://www.w3schools.com/tags/att_input_accept.asp
http://www.w3schools.com/php/php_file_upload.asp
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setImmediate vs. nextTick
...
import fs from 'fs';
import http from 'http';
const options = {
host: 'www.stackoverflow.com',
port: 80,
path: '/index.html'
};
describe('deferredExecution', () => {
it('deferredExecution', (done) => {
console.log('Start');
setTimeout(() => console.log('TO1'), 0);
set...
JavaScript string encryption and decryption?
...sing one of these method: AES-CBC, AES-CTR, AES-GCM, or RSA-OAEP.
https://www.w3.org/TR/WebCryptoAPI/#dfn-Crypto
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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...文件,所以必须使用64位版本。官方下载地址如下：http: www mongodb org downloads实验环境使用的Mongodb版本为mon 因为MongoDB使用内存映射文件,所以必须使用64位版本。
官方下载地址如下：http://www.mongodb.org/downloads
实验环境使用的Mongo...
How can I convert a DateTime to the number of seconds since 1970?
...152000 Seconds since year 2000
References:
Epoch Time converter: https://www.epochconverter.com
Year 1 converter: https://www.epochconverter.com/seconds-days-since-y0
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make an html svg object also a clickable link
...your SVG (right before the closing </svg> tag):
<a xmlns="http://www.w3.org/2000/svg" id="anchor" xlink:href="/" xmlns:xlink="http://www.w3.org/1999/xlink" target="_top">
<rect x="0" y="0" width="100%" height="100%" fill-opacity="0"/>
</a>
Then just amend the link to s...
How to create a multi-tenant database with shared table structures?
...te-paper on Salesforce.com about how they implement multi-tenancy:
http://www.developerforce.com/media/ForcedotcomBookLibrary/Force.com_Multitenancy_WP_101508.pdf
They have 1 huge table w/ 500 string columns (Value0, Value1, ... Value500). Dates and Numbers are stored as strings in a format such ...