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SQL injection that gets around mysql_real_escape_string()
...l example is DROP TABLE, in practice the attacker is more likely to SELECT passwd FROM users. In the latter case, the second query is usually executed by use of a UNION clause.
– Jacco
May 21 '12 at 9:47
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Apache Spark: The number of cores vs. the number of executors
...acities,
yarn.nodemanager.resource.memory-mb and
yarn.nodemanager.resource.cpu-vcores, should probably be set to 63 *
1024 = 64512 (megabytes) and 15 respectively. We avoid allocating 100%
of the resources to YARN containers because the node needs some
resources to run the OS and Hadoop daemons. In ...
Is it worthwile to learn assembly language? [closed]
... you understanding of security issues -- write-or-execute, stack overruns, etc.
Some concurrency issues only become apparent when you are aware of what is happening at the per-instruction level.
It can be useful sometimes when debugging if you don't have the complete source code.
There's the curi...
无社交不商业，Uber将边缘化BAT - 资讯 - 清泛网 - 专注C/C++及内核技术
...司，居然打败了如此强大的出租车公司。
这说明了一个问题：就是连接比拥有更加重要。
连接是一种关系，而你拥有的只是物质，也就是说，现在的世界，关系比物质更重要。
讲到这里，我们还没有真正了解互联网...
boost多索引容器multi_index_container实战 - C/C++ - 清泛网 - 专注C/C++及内核技术
...越多的同行们能快速高质量地解决实际项目中遇到的各种问题，在此将我将自己实战中实用boost的经验分享给大家，本人才疏学浅，如果有什么问题希望读者们能帮助指出，大家共同探讨^_^
本章介绍的主题是multi_index_container
注...
Node.js and CPU intensive requests
... larger you just make the main server a node cluster and reverse proxy the CPU intensive tasks to other servers built for milti-threaded processing.
– Evan Plaice
Jan 24 '12 at 21:53
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asynchronous vs non-blocking
...g whether given condition holds (socket is readable, device has more data, etc.)
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Is “IF” expensive?
...truction reordering, at the compiler level, and also to some extent on the CPU level (for an out-of-order CPU, of course). Nice detailed answer though.
– jalf
Nov 24 '08 at 20:58
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PHP + MySQL transactions examples
...s";
$member_name = "EleventyOne";
$conn = new mysqli($db_host,$db_user,$db_passwd,$db_name); // error-check this
// note: this is meant for InnoDB tables. won't work with MyISAM tables.
try {
$conn->autocommit(FALSE); // i.e., start transaction
// assume that the TABLE groups has an a...
How can I build a small operating system on an old desktop computer? [closed]
...iles and devices, reading and writing, passing messages between processes, etc.
Read up on x86 assembly (assuming you are designing this for an x86 machine). That should answer a lot of your questions with regards to moving between processor operating modes.
If you've got any electronics knowledg...