Spanner & TrueTime ·
commit-wait buys order
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seel
.com · TT.now() = [earliest, latest] · External consistency
ε uncertainty
±4 ms
Stage
0 / 9
State
three datacenters, skewed clocks
TrueTime interval [earliest, latest]
Commit timestamp s = latest
Commit-wait region
Committed — order guaranteed
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.com · Spanner & TrueTime