测试openjpa，无缓存。
如果我们指定一个无缓存的流，buf和size参数被忽略。
If we specify an unbuffered stream, the buf and size arguments are ignored.
远程数据源启用了F2PC，且联邦服务器的日志放在无写缓存的磁盘上(绿色)。
F2PC to the remote source is enabled, and the federated server's logs are on a disk without write caching (green).
最差就是全动态发布并不提供校验参数；你无发缓存任何内容。
The worst are ones which dynamically generate all content and don't provide validators; they may not be cacheable at all.
承载一个无Cookie的域上的静态组件的另一个好处是某些代理可能会拒绝缓存在请求与Cookie的组件。
Another benefit of hosting static components on a cookie-free domain is that some proxies might refuse to cache the components that are requested with cookies.
承载一个无Cookie的域上的静态组件的另一个好处是某些代理可能会拒绝缓存在请求与Cookie的组件。
Another benefit of hosting static components on a cookie-free domain is that some proxies might refuse to cache the components that are requested with cookies.
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