Exam Professional Cloud Developer topic 1 question 95 discussion

Why C? I chose option A because of the DB option. both Cloud run (A) and App Engine Standard (C) can scale to zero, so we need to find out the correct DB Firestore vs CloudSQL since we don’t know any details if data structures require relational or noSQL, I’d go for Firestore because it is more flexible in scalability than CloudSQL, and also you only pay per storage usage + operations

I agree with A as it is the only one fits for scale up and down =

Answer A. Python + Firestore + Cloud Run: Truly serverless (scales to zero) Pay only for actual usage Handles spikes well Firestore scales automatically Minimal management overhead Lowest cost when no traffic

A: Building the application in Python with Firestore as the database and deploying the application to Cloud Run is a good approach. Cloud Run is designed to scale up and down automatically, even down to zero, which can help minimize costs when there's no traffic. Firestore is a serverless, NoSQL document database that can scale automatically to meet your application's needs. Why C is rejected? C: While App Engine standard environment can scale down to zero instances, CloudSQL is not serverless and you are billed for the time that the database instance is running, which could increase costs when compared to Firestore.

Also Firestore has a free tier quota

Option A is a suitable choice for building a stateless web application with unpredictable traffic, aiming to automatically scale up and down while minimizing costs

A is best suited here.

Answer is A: To minimize the cost of running the application and to allow it to automatically scale up and down based on incoming traffic, you should build the application in Python with Firestore as the database, and deploy it to Cloud Run. B and C, which involve deploying the application to App Engine, may also allow the application to automatically scale, but they may not be as cost-effective as Cloud Run. Option D, which involves deploying the application to a Compute Engine managed instance group, would allow the application to automatically scale, but it would not be as cost-effective as Cloud Run, as you would have to pay for the resources that you use even when there is no traffic.

A is the answer.

A is correct

A because of "stateless web app"

It's simple, we need a stateless web app (not relational DB as Cloud SQL), and sometimes it scales down to zero utilization (only GAE flex & Cloud Run can do this). I'll go with option A as well.

Correct Answer is A; They are talking about minimize cost, with Cloud SQL isn't cheaper than Firestore.

Agree with Option C

I vote C