3 ms·
In their databases that depend on time, they repeat that they use an external source of time. It seems like some of their designs are constrained around always
by cordite 12y ago
In their databases that depend on time, they repeat that they use an external source of time.
It seems like some of their designs are constrained around always non negative deltas between events, making things append only so their trees or hash tables are only balanced once when written to disk.
- Artemis2 12y agoI haven't read about Spanner, but wouldn't it be possible for their clock to measure time based on an epoch, instead of using the system based on physical factors (the rotation of the earth around its axis and around the sun) that we use?
- cordite 12y agoIt is probably easier in the long run if the servers had the same time as the machines that people use, which are regularly updated by their OS's choice of NTP server, since people run reports and react accordingly.