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.
操作码缓存——以及一个操作码优化器，通常由相同的包提供——是一种加快站点响应的低成本技术。
An opcode cache — and an opcode optimizer, which is often provided in the same package — is a dirt-cheap technique to hasten the responsiveness of your site.
这种技术的主要目标是尽可能优化缓存的使用，减少系统在执行给定的操作时必须获取数据并把数据放进缓存的次数。
This technique focuses on how best to optimize the usage of cache in order to reduce the number of times the system must retrieve data and place it in cache to perform a given set of operations.
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