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GeoIP

By default, CountryLookupTest expects to find the GeoIP Country database in src/main/resources/GeoIP.dat

IMPORTANT API Change for 1.1.x users - as of GeoIP 1.1.0 the lookupCountryXxxx methods return null if a country can not be found (it used to return '--' or 'N/A'. Be sure to check the return value for null !

This is version 1.2.3 of the Java interface to GeoIP. For more information see http://www.maxmind.com/

As of version 1.1.4 this API is fully thread safe.

To get started for GeoIP Country, look at the code in CountryLookupTest.java.

CityLookupTest.java contains an example for the MaxMind GeoIP City database. OrgLookupTest.java contains examples for the GeoIP Organization and ISP databases. RegionLookupTest.java contains an example for the MaxMind GeoIP Region database. NetspeedLookupTest.java contains an example for the MaxMind GeoIP Netspeed database.

BenchmarkGeoIP.java contains benchmarks for various databases using various options.

Note that CountryLookupTest assumes that you have the GeoIP Country database installed at /usr/local/share/GeoIP/GeoIP.dat

A free GeoLite Country database is available from: http://www.maxmind.com/app/geoip_country

A free GeoLite City database is available from: http://www.maxmind.com/app/geolitecity

MaxMind GeoIP Country offers greater accuracy over the free database. MaxMind GeoIP Country, Region, City, ISP, and Organization are available for purchase from here: http://www.maxmind.com/app/products

Please send any comments to [email protected]

MEMORY CACHING AND OTHER OPTIONS

The following options can be passed as the second parameter to the LookupService constructor:

GEOIP_STANDARD - read database from filesystem, uses least memory.

GEOIP_MEMORY_CACHE - load database into memory, faster performance but uses more memory

GEOIP_CHECK_CACHE - check for updated database. If database has been updated, reload filehandle and/or memory cache.

GEOIP_INDEX_CACHE - just cache the most frequently accessed index portion of the database, resulting in faster lookups than GEOIP_STANDARD, but less memory usage than GEOIP_MEMORY_CACHE - useful for larger databases such as GeoIP Organization and GeoIP City. Note, for GeoIP Country, Region and Netspeed databases, GEOIP_INDEX_CACHE is equivalent to GEOIP_MEMORY_CACHE

Note the options can be combined, for example: LookupService cl = new LookupService(dbfile, LookupService.GEOIP_MEMORY_CACHE | LookupService.GEOIP_CHECK_CACHE);

Windows Notes

If it doesn't work on Windows, try to remove or comment out all the "package com.maxmind.geoip" lines from all the files.

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