Latency Or Truth

A datastore is classified PA/EL under PACELC. Which behaviors follow from that classification? (Select all that apply.)

A

A read issued right after a successful write can return the older value even though nothing is partitioned

B

Writes on the minority side of a partition are rejected so that exactly one copy of the truth survives

C

During a partition both sides keep taking writes and the divergence is reconciled after the link returns

D

With a healthy network it replicates asynchronously by default, acknowledging a write before every replica holds it

E

Reads are linearizable whenever no partition is in progress, since the else branch only relaxes write ordering