Apache 模块 mod_asn
本文导语: mod_asn 是一个通过IP地址在 BGP 路由数据中寻找自治系统和网络子网的Apache模块。mod_asn 具备高可伸缩性，查询的速度非常快，使用 PostgreSQL ip4r 数据类型。 mod_asn is an Apache module that uses BGP routing data to look up the autonomous system (AS) an...
mod_asn 是一个通过IP地址在 BGP 路由数据中寻找自治系统和网络子网的Apache模块。mod_asn 具备高可伸缩性，查询的速度非常快，使用 PostgreSQL ip4r 数据类型。
mod_asn is an Apache module that uses BGP routing data to look up the autonomous system (AS) and the network prefix (subnet) which contains a given (client's) IP address. mod_asn is highly scalable. To do lookups in high-speed, it uses the PostgreSQL ip4r datatype, which is indexable with a Patricia Trie algorithm to store network prefixes. This is the most suitable algorithm, being able to search through around 250,000 existing prefixes quickly. mod_asn is usable as a standalone module, and the lookup result can be used by scripts or other Apache modules. For instance, a download redirector could base its decisions on the lookup result provided by mod_asn.
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