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time to service recovery.

LAN erwironments can typically be configured with stable Iow latency, and such that they can provide

redundancy with fast failover. Individual link failures can be recovered from with minimal and controlled

latency visible at the TCP level (where MySQL Cluster normally operates). WAN environments may

offer a rangę of latencies, as well as redundancy with slower failover times. Individual link failures may

require route changes to propagate before end-to-end connectivity is restored. At the TCP level this

can appear as large latencies on individual channels. The worst-case observed TCP latency in these

scenarios is related to the worst-case time for the IP layer to reroute around the failures.