我们不仅通过利用一个操作码缓存和优化PHP配置探究了php级别的技术，而且探究了如何优化您的数据库设计来实现合理的索引编制。
We looked at techniques not only at the PHP level, by leveraging an opcode cache and optimizing the PHP configuration, but also looked at optimizing your database design for proper indexing.
人们买药时撕掉贴在包装上的一个标签，就会得到一串码，然后通过短信形式把它发送到一个计算机系统，通过这个系统可以在数据库中查询到相关信息。
People buying medicine scratch off a panel attached to the packaging. This reveals a code, which they can text to a computer system that looks it up in a database.
但是，值得牢记的是，许多IPS嗅探器使用基于特征码的检测方法，这意味着当攻击被发现的时候才能被加入到数据库中。
Worth noting, however, is that many IPS sensors use signature-based detection, meaning that attacks are added to a database as they are discovered.
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