caching DNS server 缓存DNS服务器
no-dns-cache disable caching DNS lookups 禁用缓存
Caching-Only DNS 高速缓冲域名服务器
DNS Caching Server 缓存服务器
A new network caching daemon has also been introduced to improve performance when resolving using DNS.
引入了一个新的网络缓存守护进程，它可以提高使用DNS解析名称时的性能。
The caching proxy can process any LSID that is resolvable via DNS, so its list of known URIs is technically the global space of LSIDs.
缓存代理能处理任何可以通过DNS解析的LSID，所以它的已知uri列表在理论上是LSID全局空间的列表。
Aiming at the practical problems a parallel crawler will face to, this paper advances three types of optimization policy for ChaoCrawler, including collision avoidance, URL indexing and DNS caching.
针对并行爬行器所遇到的实际问题，实现了三种优化策略：冲突规避，URL索引和DNS缓冲。
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