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Postfix发信的频率控制几个参数 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...不同的措施来防止恶意用户的拒绝服务攻击。
smtpd_error_sleep_time：当该错误计数器的值还很小时，postfix将暂停
smtpd_error_sleep_time指定的时间，然后向客户端报告一个错误。该参数的缺省值为5秒。
smtpd_soft_error_limit：当错误计数...
git difftool, open all diff files immediately, not in serial
...say that --dir-diff works perfectly with Meld. From there, it will let you select and view diffs for individual files.
– mkasberg
Jun 30 '15 at 18:58
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Avoid browser popup blockers
... Interestingly, popups initiated through a change event bound to a select element will get blocked (in Chrome, not FF), even though that event is initiated by a direct user action, like a click. Although if bound to an input, they're allowed. Strange.
– ccnokes
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How to update a plot in matplotlib?
...p=plt.cm.gray)
del tempCS1
fig.canvas.draw()
#time.sleep(1e-2) #unnecessary, but useful
fig.clf()
fig = plt.figure()
ax = fig.add_subplot(111)
win = fig.canvas.manager.window
fig.canvas.manager.window.after(100, animate_frames, frames)
I also found a much simpler...
Hidden Features of MySQL
...that has an integer type,
you can also refer to the column as "_rowid" in SELECT statements.
In MySQL, the name of a PRIMARY KEY is PRIMARY
Currently, only InnoDB (v5.1?) tables support foreign keys.
Usually, you create all the indexes you need when you are creating tables.
Any column declared...
C++实现一款简单完整的聊天室服务器+客户端 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++实现一款简单完整的聊天室服务器+客户端Linux下select函数实现的聊天服务器消息缓冲区类MessageBuffer，接收线程将受到的消息放入缓冲区，发送线程从缓冲区中取出消息MessageBuffe...目录：
Linux下select函数实现的聊天服务器
基...
How to find out which view is focused?
...ewView.getClass());
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}).start();
KOTLIN
Thread(Runnable {
var oldId = -1
while (true) {
...
How to convert Linux cron jobs to “the Amazon way”?
...memcached or some database
Then using multiple Gearman servers you have to select one that creates task via cronjob, so again we are back to the same problem. But if you can live with this kind of single point of failure using Gearman looks like quite good solution. Especially that you don't need bi...
How do I add a delay in a JavaScript loop?
I would like to add a delay/sleep inside a while loop:
30 Answers
30
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Throttling method calls to M requests in N seconds
...an N seconds in the past, you execute and add another entry, otherwise you sleep for the time difference.
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