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What read preference should your application use if you want to read from the primary under normal circumstances but allow reads from secondaries when a primary is unavailable?
Suggested Answer: E
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11 comments · newest first
BE
Benton
11 months ago
Hmm, I’m not so sure about that. Isn’t primaryPreferred risky?
CR
Craig
12 months ago
Definitely E, it makes the most sense for failover.
RO
Roosevelt
12 months ago
Wait, can you really read from secondaries when the primary is down?
CO
Cora
12 months ago
I thought it was A, secondaryPreferred?
EL
Elly
1 year ago
Gotta go with E, primaryPreferred is the way to go!
DA
Daisy
1 year ago
I'm a bit confused; I thought "nearest" was for latency optimization. Does it really allow reads from secondaries when the primary is down?
NA
Naomi
1 year ago
I'm not entirely sure, but "primaryPreferred" sounds familiar too. It prioritizes the primary but can fall back to secondaries, right?
JU
Jutta
1 year ago
I think the answer might be "secondaryPreferred" since it allows reads from secondaries when the primary is down.
KA
Karina
1 year ago
I remember practicing a question like this, and I think "secondaryPreferred" was the one that allowed reads from secondaries when the primary isn't available.
SH
Sherita
1 year ago
This is a tricky one, but I think the key is to focus on network-level attacks that try to isolate or partition the blockchain. Eclipse and Sybil attacks seem like the most relevant options here.
MI
Micaela
1 year ago
Okay, I've got a strategy for this. I'll eliminate the options that don't seem directly relevant, then focus on evaluating the remaining choices to select the best answer.