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Define Idempotency in API design. Provide a specific example of an API request (e.g., a DELETE or PUT request) that should be idempotent and explain why non-idempotency leads to data corruption during retries.
Design a Load Testing Scenario for a new e-commerce login page that needs to handle 5,000 concurrent users. Define the specific Thresholds f...
Identify two common programming practices (e.g., excessive object creation, unclosed resources) that lead to high Memory Usage and potential...
Given a slow SQL query: SELECT * FROM users WHERE status = 'active' AND last_login < '2024-01-01', propose two distinct methods for optimiza...
Define Horizontal Scaling. For a stateless web API, list 3 architectural components (e.g., load balancer, auto-scaling group) required to en...
Describe the role of a Circuit Breaker Pattern in a microservices architecture. Explain the three primary states (Closed, Open, Half-Open) a...
List 5 essential Infrastructure Metrics (e.g., CPU, RAM, Disk I/O) that an application operations team must monitor to proactively detect pe...
Explain the function of an API Gateway in a microservices environment. List 3 critical services (e.g., authentication, rate limiting, reques...
Explain the concept of Application Caching (e.g., Redis). Define the two types of data that are ideal for caching (e.g., static content, exp...
Explain the function and primary performance benefit of using a Content Delivery Network (CDN). Identify 3 types of application assets (e.g....
Outline the difference between RTO (Recovery Time Objective) and RPO (Recovery Point Objective). For a critical financial application, propo...
Describe how a Message Queue (e.g., Kafka, RabbitMQ) and Rate Limiting can be used together to protect a vulnerable back-end service from be...
For a serverless function (e.g., AWS Lambda), identify the two primary factors that determine the cost (e.g., execution time, memory allocat...