Comments (2)
It uses a simple binary search on an in-memory byte array with fixed width records: https://en.wikipedia.org/wiki/Binary_search_algorithm
from node-geoip.
Thank you for your response. I appreciate your clarification. I'm especially interested in the specific heuristics employed for the bitwise encoding of CSV data and "aton" functions. I would be very grateful if you could point me towards any articles or resources that delve deeper into such bitwise operations that were used to parse CSV into byte array. Would like to expand my knowledge on this subject.
from node-geoip.
Related Issues (20)
- Make updatedb fast
- Library unusable due to "colors" module debacle HOT 1
- URLs in updatedb.js no longer work
- ERR_BUFFER_OUT_OF_BOUNDS after automatic update HOT 2
- Re: Database updates HOT 16
- Custom directory in updatedb doesn't work. HOT 6
- Sometimes geoip return null value HOT 3
- returns wrong country for 72.18.74.123 HOT 1
- Update database HOT 1
- 401 Unauthorized when trying to upgrade HOT 8
- Upgrade is extremely slow. HOT 4
- Get the postal / zip code ? HOT 1
- The included data is out of date HOT 2
- remove fs dependency HOT 3
- IP from US but the returned result is from Africa HOT 3
- Incorrect geolocation for non-geolocated IPs HOT 8
- IPv6 not working HOT 4
- Error in getting the Info HOT 2
- updatedb.js: ERROR: HTTP Request Failed [302 Found]
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from node-geoip.