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Enable remote connections for SQL Server Express 2012

...iscovered was here: How do I configure SQL Server Express to allow remote tcp/ip connections on port 1433? Run SQL Server Configuration Manager. Go to SQL Server Network Configuration > Protocols for SQLEXPRESS. Make sure TCP/IP is enabled. So far, so good, and entirely expected. But then: ...
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9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...的包丢弃: BLOCK_THIS_IP="x.x.x.x" iptables -A INPUT -i eth0 -p tcp -s "$BLOCK_THIS_IP" -j DROP 以上命令设置将由x.x.x.x ip发往eth0网口的tcp包丢弃。 4.配置服务项 利用iptables,我们可以对日常用到的服务项进行安全管理,比如设定只能通过...
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构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...的写压力,可以采取批量写操作的方式。 开辟一个内存区域,当数据到达区域的一定阀值时如80%时,在内存中做分库梳理工作(内存速度还是比较快的),后分库批量flush。 6) 搜索 在电子商务平台中搜索是一个非常的重要功能...
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你以为发传单真的这么简单吗?(提升成功率干货) - 更多技术 - 清泛网 - 专...

...本上是从A点到B点,就意味着行人总需要在A区和中间C区域等待。 根据停留时间来看,由从长到短分别是:C> A>B ,用户到了B点几乎是不会停留的,都很匆忙地走过。 但每天早晨,却会发现发传单的人几乎全部集中在B区...
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MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术

...大,所以闪烁比较严重。而不进行背景重绘,由于大部分区域新画的颜色与旧颜色相同,就不会有严重的闪烁效果了。这样做有没有什么不好的后果呢?通常情况是没有的,因为一般都是执行整个窗口的重绘,即使用白色刷了背...
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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

...息及时性的前提下,根据网络类型自适应的找出保活信令TCP连接的尽可能大的心跳间隔,从而达到减少安卓微信因心跳引起的空中信道资源消耗,减少心跳Server的负载,以及减少部分因心跳引起的耗电。 主要方法是参考WhatsApp...
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Freeing up a TCP/IP port?

...tening for http requests on port 80 (run as root or use sudo): # fuser 80/tcp If you want to kill them, then just add the -k option. share | improve this answer | follow ...
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Can't connect to localhost on SQL Server Express 2012 / 2016

... If not, start it. You need to make sure that SQL Server is allowed to use TCP/IP or named pipes. You can turn these on by opening the SQL Server Configuration Manager in Start > Programs > Microsoft SQL Server 2012 > Configuration Tools (or SQL Server Configuration Manager), and make sure ...
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Keep-alive header clarification

...this info kept ("this connection is between computer A and server F")? A TCP connection is recognized by source IP and port and destination IP and port. Your OS, all intermediate session-aware devices and the server's OS will recognize the connection by this. HTTP works with request-response: cli...
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Who is listening on a given TCP port on Mac OS X?

On Linux, I can use netstat -pntl | grep $PORT or fuser -n tcp $PORT to find out which process (PID) is listening on the specified TCP port. How do I get the same information on Mac OS X? ...