后三类加速器能够缓存和优化字节码，这为系统提供了更多的速度提升。
The latter three cache and optimize the byte code, providing for even greater speedups.
如果响应码是 200，边缘服务器会自动地缓存所有可缓存的内容。
The edge server will automatically cache any cacheable content if the response code is 200.
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.
不同于APC和Wincache，它仅是一个操作码缓存和优化器，因此它不包含用户缓存组件。
Unlike APC and Wincache, it is only an opcode cache and optimizer, so it does not contain the user cache components.
Zend的厂商也提供了一种商业操作码缓存，包括一个进一步提高效率的优化器。
The makers of Zend also have a commercial opcode cache that includes an optimizer to further increase efficiency.
Zend的厂商也提供了一种商业操作码缓存，包括一个进一步提高效率的优化器。
The makers of Zend also have a commercial opcode cache that includes an optimizer to further increase efficiency.
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