Ensure Continuous Service

Interruptions in rvcache service can result in two undesirable consequences:

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Programs that query during the interruption do not receive the cached data.

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The cache does not record data from messages sent during the interruption. Gaps in the cache persist after the interruption.

To minimize these effects, we recommend that system administrators consider these strategies:

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Avoid interruptions whenever possible.

For example, shift rvcache (along with its disk file) to an alternate host computer before scheduled downtime. Since rvcache is independent of the computer on which it runs, switching hosts can be an effective remedy.

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Reduce the length of unavoidable interruptions.

Monitor the health of the rvcache process and its host computer. If any problem prevents smooth operation, promptly correct the situation or shift rvcache to an alternate host computer.

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Run rvcache as a fault-tolerant service.

For details, see Fault Tolerance.