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What's a good rate limiting algorithm?

...ard_message(); allowance -= 1.0; There are no datastructures, timers etc. in this solution and it works cleanly :) To see this, 'allowance' grows at speed 5/8 units per seconds at most, i.e. at most five units per eight seconds. Every message that is forwarded deducts one unit, so you can't se...
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What are some resources for getting started in operating system development? [closed]

...ith this one? i'm very interested? what kit to buy..books to start you off etc – Julio Oct 29 '10 at 15:52 @Uncle: I'v...
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Sending HTML email using Python

... smtplib.SMTP('localhost') s.starttls() s.login(email_login, email_passwd) s.sendmail(msg['From'], [msg['To']], msg.as_string()) s.quit() share | improve this answer | ...
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30岁之后,程序员该向什么方向发展? - 杂谈 - 清泛网 - 专注C/C++及内核技术

...,脑袋没有那么灵光,没有那么有冲劲了,这也是个人的问题。如果你自己不努力,到多少岁都一样。 以前也有人问我二十几岁再开始编程晚不晚,我的回答是,不晚,什么时候都不晚。 QA&2. 您个人或身边有这样的实例吗?...
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What is the best way to repeatedly execute a function every x seconds?

...executed, then it waits 60 seconds then it executes again, waits, execute, etc... No need to complicate things :D share | improve this answer | follow | ...
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C# vs C - Big performance difference

...ction. It isn't always faster because a native language generated it, the cpu doesn't care. – Hans Passant Mar 17 '12 at 10:09 17 ...
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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区,为创新赋能!

...用扫描和广播进行数据的传输(数据量不大,功耗要求较高的情况下),也可以在广播和扫描的基础上进行连接后点对点通信。广播访问地址广播包:广播包Access Address 固定为0x8E89BED6,广播包只能在广播信道(channel)上传输,...
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外媒评本轮科技泡沫:创业公司首当其冲 九成将消失 - 资讯 - 清泛网 - 专注...

...团队,这个团队只能以财报电话会议内容以及各种棘手的问题为依据,对私营公司进行投资——把它们当作是上市公司。 总之,越来越多的日常投资者正暴露给后期私营科技公司,无论结果是好还是坏。据博伊德介绍,作为富...
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What is the difference between a process and a thread?

... referring to. Threads are an operating environment feature, rather than a CPU feature (though the CPU typically has operations that make threads efficient). Erlang uses the term "process" because it does not expose a shared-memory multiprogramming model. Calling them "threads" would imply that the...
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kernel stack and user space stack

...sable, and therefore will require one set under its own control. Different CPU architectures implement this in different ways; x86 CPUs automatically switch stackpointers when privilege mode switches occur, and the values to be used for different privilege levels are configurable - by privileged cod...