Competitive k-server algorithms

Amos Fiat*, Yuval Rabani, Yiftach Ravid

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


In this paper we give deterministic competitive k-server algorithms for all k and all metric spaces. This settles the k-server conjecture up to the competitive ratio. The best previous result for general metric spaces was a three-server randomized competitive algorithm and a non-constructive proof that a deterministic three-server competitive algorithm exists. The competitive ratio we can prove is exponential in the number of servers. Thus, the question of the minimal competitive ratio for arbitrary metric spaces is still open.

Original languageAmerican English
Pages (from-to)410-428
Number of pages19
JournalJournal of Computer and System Sciences
Issue number3
StatePublished - Jun 1994
Externally publishedYes


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