Key-based routing

{{Short description|Technique used in computer networking}}

{{Refimprove|date=September 2019}}

Key-based routing (KBR) is a lookup method used in conjunction with distributed hash tables (DHTs) and certain other overlay networks. While DHTs provide a method to find a host responsible for a certain piece of data, KBR provides a method to find the closest host for that data, according to some defined metric. This may not necessarily be defined as physical distance, but rather the number of network hops.{{cite book |url=https://books.google.com/books?id=O9NkAaY9YxMC&q=Key-based+routing+freenet&pg=PA58 |title=P2P Networking and Applications - John Buford, Heather Yu, Eng Keong Lua - Google Książki |isbn=9780080921198 |last1=Buford |first1=John |last2=Yu |first2=Heather |last3=Lua |first3=Eng Keong |date=11 March 2009 |publisher=Morgan Kaufmann }}{{cite book |url=https://books.google.com/books?id=IjgVAgAAQBAJ&q=Key-based+routing+freenet&pg=PA506 |title=Distributed and Cloud Computing: From Parallel Processing to the Internet of ... - Kai Hwang, Jack Dongarra, Geoffrey C. Fox - Google Książki |isbn=9780128002049 |last1=Hwang |first1=Kai |last2=Dongarra |first2=Jack |last3=Fox |first3=Geoffrey C. |date=18 December 2013 |publisher=Morgan Kaufmann }}{{cite book |url=https://books.google.com/books?id=3JClHj3SXjwC&q=Key-based+routing+freenet&pg=PA115 |title=Medical Imaging Informatics - Google Książki |isbn=9781441903853 |last1=Bui |first1=Alex A. T. |last2=Taira |first2=Ricky K. |date=December 2009 |publisher=Springer }}