Replication

Question 1

For applying and externalizing the certified transactions, Group Replication permits servers to deviate from the agreed order of the transactions if this does not break consistency and validity.

a) False
b) True

Answer 1

b) True

Group Replication is an eventual consistency system, meaning that as soon as the incoming traffic slows down or stops, all group members have the same data content. While traffic is flowing, transactions can be externalized in a slightly different order, or externalized on some members before the others.

Question 2

Group Replication is an instant consistency system, meaning that all group members have the same data content at all times.

a) False
b) True

Answer 2

a) False

Group Replication is an eventual consistency system, meaning that as soon as the incoming traffic slows down or stops, all group members have the same data content.