Reply to post: Re: Having a human to intervene

GitHub lost a network link for 43 seconds, went TITSUP for a day

Anonymous Coward
Anonymous Coward

Re: Having a human to intervene

Were these 2 datacenters really 11k miles apart?

Latency usually covers round-trip time, and speed-of-light in fibre is only 2x10^8 m/s, so 60mS is more like 6000km of pure fibre separation. That is roughly the distance between US East & West coasts by fibre, but your point is still valid. It's too slow for synchronous replication, so you cannot guarantee that both sides are 100% in sync. Any failover solution has to take that into account.

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