They had an initial 45-minute phone interview. I came to know via the recruiter after a week that I needed to go for an in-person interview. I was called in at 2:00 pm.

There were four rounds of 1:1 interviews. The interview level was not as good as I had heard about them. One of the managers was busy with a production issue, so they couldn't interview me much.

I could make out that they were not looking for an architect but a senior developer kind of person. All the interviews were for 45 minutes each. I performed very well and finished everything by 5:30 pm.

I then told the recruiter about this. I waited for some time and then started asking for feedback every 2-3 days from the recruiter. After one month, I came to know that there was no feedback.

This was a very unprofessional attitude from Goldman Sachs. I took one day off only to hear there was no feedback. I will never apply to Goldman Sachs again.

What if the one DB instance fails? How can you achieve high availability, fault tolerance, and failover in this case?

You have a stack. How can you convert it into a queue?