09The database failed over to its Multi-AZ standby and the application fell over anyway. What did Multi-AZ promise, what does it not?▼mediumNewAmazon & AWSRazorpayJPMorgan ChaseunlockedDatabase redundancy still needs reconnecting clients. Distinguish the deployment type, then measure how promotion and DNS changes affect application requests.Open full answer →
10Everything is deployed across three AZs, yet one AZ impairment took your whole service down. How does that happen?▼hardNewGoogleAmazon & AWSNetflixunlockedSpreading instances across availability zones is not the same as surviving an AZ failure. The candidates who know this can name the four coupling points that quietly re-unify your blast radius.Open full answer →
16Reads are drowning our database primary. Someone suggested Multi-AZ. Does that help, and if not, what does?▼easyNewRazorpaySwiggyJPMorgan Chase○ sign inAsk whether Multi-AZ means a DB instance or a DB cluster. One has a non-readable standby; the other has two readers. That distinction decides whether the proposal can relieve the primary.Open full answer →
