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Java NIO FileChannel versus FileOutputstream performance / usefulness
...ly benchmarking the disk, and not Java. I would also suggest that if your CPU is not busy, then you are probably experiencing some other bottleneck.
Don't use a buffer if you don't need to.
Why copy to memory if your target is another disk or a NIC? With larger files, the latency incured is non-...
Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]
... just a data storage service, rather than a service allowing remote login, etc.)
5 Answers
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What is the best algorithm for overriding GetHashCode?
... just wrap
{
int hash = 17;
// Suitable nullity checks etc, of course :)
hash = hash * 23 + field1.GetHashCode();
hash = hash * 23 + field2.GetHashCode();
hash = hash * 23 + field3.GetHashCode();
return hash;
}
}
As noted in comments, you may...
Benchmarking small code samples in C#, can this implementation be improved?
...ty to minimize fluctuations caused by other processes/threads
Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.High;
Thread.CurrentThread.Priority = ThreadPriority.Highest;
// warm up
func();
var watch = new Stopwatch();
// clean up
GC.Collect();
...
Logstash实践: 分布式系统的日志监控 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...监控日志，一方面帮助日志微调，一方面及早发现程序的问题
只做到第1点的，你可以洗洗去睡了。很多公司都有做到第2点和第3点，这些公司的服务端程序基本已经跑了很长时间了，已比较稳定，确实无需花太多时间去关注...
How is Python's List Implemented?
...size;
/* Vector of pointers to list elements. list[0] is ob_item[0], etc. */
PyObject **ob_item;
/* ob_item contains space for 'allocated' elements. The number
* currently in use is ob_size.
* Invariants:
* 0 <= ob_size <= allocated
* len(list) == ob...
WebRTC - scalable live stream broadcasting / multicasting
...s connect, they connect to Janus, again: WebRTC negotiation, secured keys, etc. From now on, Janus will emit back the streams to each attendees.
This works well because the broadcaster (B) only uploads its stream once, to Janus. Now Janus decodes the data using its own key and have access to the ...
What is the optimal length for user password salt? [closed]
...pical three strikes locked out for 15 minutes is better. Are you "wasting" CPU cycles to do this? Yeah, whatever. The CPU spends more time idle than not on most websites anyway, so what does it matter? If you're running into performance issues, scale out.
– Randolpho
...
In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
...m the fact that you would need to setup websocket on the server (handlers, etc.) There is simply no reason to use Long polling over websocket. Websocket is much faster (low latency) and allows the server to "talk" to the client without the client asking it to. Nowadays I use signalr (one of the best...
苦逼的年轻人和年薪百万的区别到底在哪里？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...工配备导师，带他们项目，教他们技术，解答他们的一切问题。他常念叨，离开大学后，Facebook 是他能找到的全世界最好的学校。他是导师的忠实粉丝，想跟完手头的项目，多学一些再走。
他已经跟完好几个项目了，每完成一...