Methods and systems for distributed failure detection and recovery using leasing techniques
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United States of America Patent
Stats
-
Jul 6, 2004
Grant Date -
May 3, 2001
app pub date -
Dec 20, 2000
filing date -
Oct 11, 1996
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system for using a lease to detect a failure and to perform failure recovery is provided in using this system, a client requests a lease from a server to utilize a resource managed by the server for a period of time. Responsive to the request, the server grants the lease, and the client continually requests renewal of the lease. If the client fails to renew the lease, the server detects that an error has occurred to the client. Similarly, if the server fails to respond to a renew request, the client detects that an error has occurred to the server. As part of the lease establishment, the client and server exchange failure-recovery routines that each invokes if the other experiences a failure.
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