GEOIP2 Database Update Address
Database file download Web address http://dev.maxmind.com/geoip/geoip2/geolite2/
Http://geolite.maxmind.com/download/geoip/database/GeoLite2-City.tar.gz
Http://geolite.maxmind.com/download/geoip/database/GeoLite2-Country.tar.gz
Http://geolite.maxmind.com/download/geoip/database/GeoLite2-ASN.tar.gz
Data Manipulation API Library resource URL https://dev.maxmind.com/geoip/geoip2/downloadable/#MaxMind_APIs
Official C Operation Library
SOURCE GitHub Address-https://github.com/maxmind/libmaxminddb
Document reference Address-http://maxmind.github.io/libmaxminddb/
Unofficial C + + operations Library
-Https://www.ccoderun.ca/GeoLite2PP/download/?C=M;O=D
API documentation Reference Address-https://www.ccoderun.ca/GeoLite2++/api/
File format Specification Description:
MaxMind DB File Format specification-http://maxmind.github.io/maxmind-db/
GEOIP2 Database Update Address