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What is a “thread” (really)?
... the Instruction Pointer. For most instructions, this simply advances the IP by the size of the instruction, but control flow instructions change the IP in other, predictable ways. The sequence of values the IP takes on forms a path of execution weaving through the program code, giving rise to the...
How to execute mongo commands through shell scripts?
I want to execute mongo commands in shell script, e.g. in a script test.sh :
22 Answers
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淘宝大秒系统设计详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...台提供一个收集热点数据提供热点订阅服务的统一规范和工具，便于把各个系统热点数据透明出来。
热点发现要做到实时（3s内）。
关键技术优化点
前面介绍了一些如何设计大流量读系统中用到的原则，但是当这些手...
Trying to SSH into an Amazon Ec2 instance - permission error
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This command + ssh -i YOUR_PEM_FILE.pem ec2-user@YOUR_IP fixed the issue. Maybe this should be the accepted answer...
– c4k
Apr 24 '14 at 18:07
add a comm...
Using node.js as a simple web server
...ecially useful when testing adaptive web sites. Open your HTML page on multiple browsers/window sizes/devices. Save your HTML page and instantly see if your adaptive stuff is working as they all auto refresh.
PhoneGap Developers
If you're coding a hybrid mobile app, you may be interested to know t...
Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
... the socket connector is used, but when you connect to "127.0.0.1" the TCP/IP connector is used. You could try using "127.0.0.1" if the socket connector is not enabled/working.
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Datatables - Search Box outside datatable
...
Default with search input in its own div:
sDom: '<"search-box"r>lftip'
If you use jQuery UI (bjQueryUI set to true):
sDom: '<"search-box"r><"H"lf>t<"F"ip>'
The above will put the search/filtering input element into it's own div with a class named search-box that is out...
Access denied for user 'test'@'localhost' (using password: YES) except root user
...ger exists.
My problem showed up when we changed the wildcard host (%) to IP specific, making the database more secure. Unfortunately there are some views that are still using 'user'@'%' even though 'user'@'172....' is technically correct.
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Socket File “/var/pgsql_socket/.s.PGSQL.5432” Missing In Mountain Lion (OS X Server)
...connect via a Unix-domain socket to a server on the local host, or via TCP/IP to localhost on machines that don't have Unix-domain sockets.
Your OS supports Unix domain sockets, but PostgreSQL's Unix socket that psql needs either doesn't exist or is in a different location than it expects.
Specif...
由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的繁忙程度。因此，我们需要一个任务分配系统，其还能监控各个服务器的负载情况。
任务分配服务器有一些难点：
负载情况比较复杂。什么叫忙？是CPU高？还是磁盘I/O高？还是内存使用高？还是并发高？还是内存换页率高...