Quick Answer
The answer is RDS Proxy, which must be added to prevent database connection storms from Lambda to Aurora. RDS Proxy acts as a connection broker, pooling and reusing database connections so that each short-lived Lambda invocation does not need to open and close a new connection, which overwhelms the database with connection storms. On the SAA-C03 exam, this scenario tests your understanding of how serverless architectures can stress relational databases, and a common trap is to suggest Lambda concurrency limits or VPC configurations instead of the dedicated proxy service. Remember that RDS Proxy also handles IAM authentication seamlessly, removing the need to store credentials in Lambda environment variables. A useful memory tip: think of RDS Proxy as a “connection concierge” that checks you in and out without flooding the lobby.
This SAA-C03 practice question tests your understanding of design high-performing architectures. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A mobile game backend uses Amazon Aurora. The workload has many short-lived database connections from Lambda functions, causing connection storms. What should be added?
An internet gateway
Why wrong: An internet gateway does not manage database connections.
S3 Select
Why wrong: S3 Select queries object content and is unrelated to database connection pooling.
RDS Proxy
RDS Proxy pools and manages database connections, improving scalability for serverless and bursty workloads.
A larger Route 53 hosted zone
Why wrong: DNS hosted zones do not solve connection storms.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
RDS Proxy
RDS Proxy is the correct solution because it sits between Lambda functions and the Aurora database, pooling and reusing database connections. This prevents connection storms by reducing the overhead of establishing new connections for each short-lived Lambda invocation, and it also helps manage IAM authentication for Lambda functions without storing database credentials.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
An internet gateway
Why it's wrong here
An internet gateway does not manage database connections.
S3 Select
Why it's wrong here
S3 Select queries object content and is unrelated to database connection pooling.
RDS Proxy
Why this is correct
RDS Proxy pools and manages database connections, improving scalability for serverless and bursty workloads.
Related concept
Read the scenario before looking for a memorised answer.
A larger Route 53 hosted zone
Why it's wrong here
DNS hosted zones do not solve connection storms.
Common exam traps
The trap here is that candidates may think scaling the database (e.g., increasing instance size) is the answer, but the question specifically targets connection management, not compute or storage capacity, and RDS Proxy is the AWS-managed service designed exactly for this use case.
Detailed technical explanation
RDS Proxy maintains a warm pool of connections to the Aurora database, allowing Lambda functions to borrow and return connections rapidly without the overhead of TLS handshakes and authentication for each invocation. Under the hood, RDS Proxy uses multiplexing to share connections across multiple client sessions, which is particularly effective for serverless workloads that create many short-lived connections. In a real-world scenario, a mobile game backend with thousands of concurrent players can cause Aurora to hit its max_connections limit, leading to errors; RDS Proxy absorbs this burst by queuing requests and reusing connections.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
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FAQ
Design High-Performing Architectures — This question tests Design High-Performing Architectures — Read the scenario before looking for a memorised answer..
The correct answer is: RDS Proxy — RDS Proxy is the correct solution because it sits between Lambda functions and the Aurora database, pooling and reusing database connections. This prevents connection storms by reducing the overhead of establishing new connections for each short-lived Lambda invocation, and it also helps manage IAM authentication for Lambda functions without storing database credentials.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A mobile game backend uses Amazon Aurora. The workload has many short-lived database connections from Lambda functions, causing connection storms. What should be added? The design must avoid adding custom operational scripts.
mediumWhy C: RDS Proxy is the correct choice because it pools and shares database connections, reducing the overhead of establishing new connections for each Lambda invocation. This prevents connection storms by maintaining a persistent pool of connections to Aurora, which is ideal for short-lived, high-frequency connections from serverless functions like Lambda.
Variation 2. A mobile game backend uses Amazon Aurora. The workload has many short-lived database connections from Lambda functions, causing connection storms. What should be added? The architecture review board prefers a managed AWS-native control.
mediumWhy C: RDS Proxy is a fully managed, AWS-native service that sits between Lambda functions and Aurora, pooling and reusing database connections. This prevents connection storms by reducing the overhead of establishing new connections for each short-lived Lambda invocation, and it also improves scalability and resilience by handling failover transparently.
Variation 3. A video platform uses Amazon Aurora. The workload has many short-lived database connections from Lambda functions, causing connection storms. What should be added? The architecture review board prefers a managed AWS-native control.
mediumWhy D: RDS Proxy is the correct choice because it manages a pool of reusable database connections, allowing Lambda functions to share and reuse connections rather than opening and closing them with each invocation. This eliminates connection storms by buffering short-lived connections from Lambda and reducing the load on the Aurora database, all as a fully managed AWS-native service.
Variation 4. A video platform uses Amazon Aurora. The workload has many short-lived database connections from Lambda functions, causing connection storms. What should be added?
mediumWhy D: RDS Proxy sits between Lambda functions and the Aurora database, pooling and reusing database connections. This prevents the Lambda functions from overwhelming the database with many short-lived connections, which can cause connection storms and degrade performance. RDS Proxy also reduces the overhead of establishing new connections and improves scalability.
Variation 5. A video platform uses Amazon Aurora. The workload has many short-lived database connections from Lambda functions, causing connection storms. What should be added? The design must avoid adding custom operational scripts.
mediumWhy D: RDS Proxy is the correct choice because it sits between Lambda functions and the Aurora database, pooling and reusing database connections. This prevents connection storms by reducing the overhead of establishing new connections for each short-lived Lambda invocation, without requiring custom scripts or application changes.
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Last reviewed: Jun 11, 2026
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