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Android微信智能心跳方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...心跳测试法:这是测试结果准确的前提保障,我们认为长连接建立后连续三次成功的短心跳就可以很大程度的保证下一次心跳环境是正常的。 b)成功一次认定,失败连续累积认定:成功是绝对的,连续失败多次才可能是失败。...
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Http长连接200万尝试及调优 - 更多技术 - 清泛网 - 专注C/C++及内核技术

Http长连接200万尝试及调优对于一个server,我们一般考虑他所能支撑的qps,但有那么一种应用, 我们需要关注的是它能支撑的连接数个数,而并非qps,当然qps也是我们...对于一个server,我们一般考虑他所能支撑的qps,但有那么一...
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怎么解决MQTT连接掉线,自动连接问题,同时解决,反复断开连接,断开连接问...

解决MQTT退出后台后掉线自动连接问题,现在可以实现自动连接,但是在返回控制界面的时候,反复断开反复链接,还有切换页面的时候返回也是同样的问题,还有连接一个服务器,需要每个页面单独设置MQTT连接吗,是不是可以...
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How to reliably guess the encoding between MacRoman, CP1252, Latin1, UTF-8, and ASCII

...ipedia articles, the most common non-ASCII characters are ·•–é°®’èö—. Based on this fact, The bytes 0x92, 0x95, 0x96, 0x97, 0xAE, 0xB0, 0xB7, 0xE8, 0xE9, or 0xF6 suggest windows-1252. The bytes 0x8E, 0x8F, 0x9A, 0xA1, 0xA5, 0xA8, 0xD0, 0xD1, 0xD5, or 0xE1 suggest MacRoman. Count u...
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How do you reverse a string in place in C or C++?

...it, nor the patience to use a hexeditor) Examples: $ ./strrev Räksmörgås ░▒▓○◔◑◕● ░▒▓○◔◑◕● ●◕◑◔○▓▒░ Räksmörgås sågrömskäR ./strrev verrts/. share | ...
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Pass a parameter to a fixture function

...pytest/issues/5712 and the related (merged) PR. – Nadège Feb 19 at 11:12 This was reverted github.com/pytest-dev/pyte...
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Difference between datetime and timestamp in sqlserver? [duplicate]

What is the difference between Timestamp and Datetime SQL Server? 2 Answers 2 ...
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服务器保持大量TIME_WAIT和CLOSE_WAIT的解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...呢? 从 上面的示意图可以看得出来,TIME_WAIT是主动关闭连接的一方保持的状态,对于爬虫服务器来说他本身就是“客户端”,在完成一个爬取任务之后,他就 会发起主动关闭连接,从而进入TIME_WAIT的状态,然后在保持这个状...
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LR性能指标解释 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...存命中、索引、单条SQL性能、数据库[/url]线程数、数据池连接数)。 3.中间件:1.Jboss 2. Apache(包括线程数、连接数、日志)。 4.网络: 吞吐量、吞吐率。 5.应用: jvm内存、日志、Full GC频率。 6.监控工具(LoadRunner[/url]):...
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Inserting a tab character into text using C#

...b + "32" TextBox2.Text = "Luc" + vbTab + "47" TextBox3.Text = "François-Victor" + vbTab + "12" End Sub will display as you can see, age value for François-Victor is shifted to the right and is not aligned with age value of two others TextBox. SOLUTION To solve this problem, you mus...