Practice Test 3 | Google Cloud Certified Professional Cloud Architect | Dumps | Mock Test
Your company plans to host a large donation website on the Google Cloud Platform. You anticipate a large and undetermined amount of traffic that will create many databases writes. Which managed service hosted on GCP would you suggest to ensure no drop for any write traffic to a database?
A. Cloud SQL with Bigger (More CPU, Memory, and Disk Size) machine type with throughput capacity matching to the anticipated peak write throughput.
B. Cloud Pub/Sub for capturing the writes and draining the queue to write to the database.
C. Memcached to store the writes until the writes are committed to the database.
D. Install your MySQL database on Compute instance and enable autoscaling.
Correct Answer – B
A – you anticipate a “large and undetermined amount of traffic”, so regardless of any provisioned IOPS there is always a risk it will not be enough and potentially high none necessary cost
B (Correct answer) – Cloud Pub/Sub for capturing the writes and draining the queue to write to the database.
Cloud Pub/Sub brings the scalability, flexibility, and reliability of enterprise message-oriented middleware to the cloud. By providing many-to-many, asynchronous messaging that decouples senders and receivers, it allows for secure and highly available communication between independently written applications. Cloud Pub/Sub delivers low-latency, durable messaging that helps developers quickly integrate systems hosted on the Google Cloud Platform and externally.
C – Memcached is for reading not for write
D – Install your MySQL database on Compute instance and enable autoscaling. If you roll out your own MySql instance, then you don’t have the advantage from manage Google Cloud SQL. Furthermore, it’ll be complicated and costly to implement a horizontal autoscaling feature even if you can try some sharding and master/slave.
So, Answer B is the clear winner.
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