PlanetLab was a group of computers available as a testbed for computer networking and distributed systems research. It was established in 2002 by Prof. Larry L. Peterson and Prof. David Culler , and as of June 2010, it was composed of 1090 nodes at 507 sites worldwide. Each research project had a "slice", or virtual machine access to a subset of the nodes.
3-584: Accounts were limited to persons affiliated with corporations and universities that hosted PlanetLab nodes. However, a number of free, public services have been deployed on PlanetLab, including CoDeeN , the Coral Content Distribution Network, and Open DHT. Open DHT was taken down on 1 July 2009. PlanetLab was officially shut down in May 2020 but continues in Europe. This computer science article
6-412: Is a stub . You can help Misplaced Pages by expanding it . This computer networking article is a stub . You can help Misplaced Pages by expanding it . CoDeeN CoDeeN is a proxy server system created at Princeton University in 2003 and deployed for general use on PlanetLab . It operates as per the following: What this means for normal users is that if they use this and a server is slow, however
9-452: The content is cached on the system, then (after the first upload) requests to that file will be fast. It also means that the request will not be satisfied by the original server, equivalent to free bandwidth. For rare files this system could be slightly slower than downloading the file itself. The system's speed is also subject to the constraint of number of participating proxies. For the case of large files requested by many peers, it uses
#353646