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Differences between socket.io and websockets
... browser:
WebSocket Client
WebSocket client example using vanilla JavaScript:
var l = document.getElementById('l');
var log = function (m) {
var i = document.createElement('li');
i.innerText = new Date().toISOString()+' '+m;
l.appendChild(i);
}
log('opening websocket connection');
var...
How should I choose an authentication library for CodeIgniter? [closed]
...)
Uses potentially unsafe md5 hashing
Failed login attempts only stored by IP, not by username - unsafe!
Autologin key not hashed in the database - practically as unsafe as storing passwords in cleartext!
Role system is a complete mess: is_admin function with hard-coded role names, is_role a complet...
Local Storage vs Cookies
... this data — the client or the server?
If it's your client (your JavaScript), then by all means switch. You're wasting bandwidth by sending all the data in each HTTP header.
If it's your server, local storage isn't so useful because you'd have to forward the data along somehow (with Ajax or hidd...
分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...问题。
3）数据一致性的问题又会引发性能问题
这就是软件开发，按下了葫芦起了瓢。
一致性模型
说起数据一致性来说，简单说有三种类型（当然，如果细分的话，还有很多一致性模型，如：顺序一致性，FIFO一致性，会话...
The new keyword “auto”; When should it be used to declare a variable type? [duplicate]
...lt;int>, foam::composition::expression<int>, foam::operators::multiply>> s = x * x; //square
foam::composition::expression<foam::composition::details::binary_expression<foam::composition::expression<foam::composition::details::binary_expression<foam::composition::expressio...
How do emulators work and how are they written? [closed]
...ou'd also have a 16-bit PC register.
With interpretation, you start at the IP (instruction pointer -- also called PC, program counter) and read the instruction from memory. Your code parses this instruction and uses this information to alter processor state as specified by your processor. The core...
Why is there an “Authorization Code” flow in OAuth2 when “Implicit” flow works so well?
... - client side - so the only way to read the hash fragment is using JavaScript that runs on the page.
This makes it possible to pass an Access Token directly to the client without the risk of it being intercepted by an intermediary server. This has the caveat of only being possible client side and...
Is recursion ever faster than looping?
...latively heavy operations, especially on implementations which support multiple threads of execution. Mutation is expensive in some of these environments because of the interaction between the mutator and the garbage collector, if both might be running at the same time.
I know that in some Scheme ...
What's the right OAuth 2.0 flow for a mobile app
...d code, such as apps
downloaded through an app store or client-side JavaScript.
Applications that do not have a web service should use the Implicit
Grant flow.
Conclusion
The final decision should factor in your desired user experience but also your appetite for risk after doing a proper risk asses...
How to serve an image using nodejs
... png: 'image/png',
svg: 'image/svg+xml',
js: 'application/javascript'
};
app.get('*', function (req, res) {
var file = path.join(dir, req.path.replace(/\/$/, '/index.html'));
if (file.indexOf(dir + path.sep) !== 0) {
return res.status(403).end('Forbidden');
}
var t...