Google PCA Practice Question: Analysing and Optimising Technical and Business Processes
An application uses Cloud SQL (PostgreSQL) and experiences high connection overhead, often exhausting the max connections limit. The team wants to maintain a pool of persistent connections without modifying application code. Which solution should they implement?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Deploy PgBouncer on a Compute Engine instance
PgBouncer is a connection pooler for PostgreSQL that manages a pool of connections, reducing overhead and preventing exhaustion. It can be deployed on Compute Engine or using Cloud SQL Auth Proxy with connection pooling.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Cloud Memorystore as a connection cache
Why it's wrong here
Memorystore is for caching data, not database connections.
- ✗
Increase the max connections flag in Cloud SQL
Why it's wrong here
Increasing max connections may strain resources but doesn't reduce overhead.
- ✗
Configure Cloud SQL Auth Proxy with max connections
Why it's wrong here
Auth Proxy provides secure connectivity but does not pool connections.
- ✓
Deploy PgBouncer on a Compute Engine instance
Why this is correct
PgBouncer is a lightweight connection pooler for PostgreSQL that can be deployed to manage connections transparently.
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
Proxy
A proxy is an intermediary server that sits between a client and a destination server, forwarding requests and responses while providing security, privacy, and control.
Key term
Compute Engine
Compute Engine is Google Cloud's Infrastructure-as-a-Service (IaaS) offering that lets you create and run virtual machines on Google's infrastructure.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCA practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCA exam.