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MATSEOTOOLS brings everything you need in one place — from AI tools List, color Library, SEO analyzers, image processing, conversion utilities, text tools, and developer tools to ready-to-use AI prompts & informative blogs.
Performance & Scalability
Identify two common programming practices (e.g., excessive object creation, unclosed resources) that lead to high Memory Usage and potential OutOfMemory (OOM) errors in an application. Propose a code review best practice to prevent this.
Given a slow SQL query: SELECT * FROM users WHERE status = 'active' AND last_login < '2024-01-01', propose two distinct methods for optimization: 1. Indexing Strategy and 2. Query Refinement, explaining how each reduces load time.
List 5 essential Infrastructure Metrics (e.g., CPU, RAM, Disk I/O) that an application operations team must monitor to proactively detect performance bottlenecks before they impact users.
Outline the difference between RTO (Recovery Time Objective) and RPO (Recovery Point Objective). For a critical financial application, propose an acceptable RTO and RPO and explain the architectural necessity for achieving them (e.g., multi-region deployment).
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.
Explain the function and primary performance benefit of using a Content Delivery Network (CDN). Identify 3 types of application assets (e.g., images, JavaScript files) that should always be served via a CDN.
Design a Load Testing Scenario for a new e-commerce login page that needs to handle 5,000 concurrent users. Define the specific Thresholds for Failure (e.g., P95 Latency >500ms, Error Rate >1%) and the tool category needed for the test.
Describe the role of a Circuit Breaker Pattern in a microservices architecture. Explain the three primary states (Closed, Open, Half-Open) and how this pattern prevents cascading failures when a downstream service becomes unresponsive.
Explain the function of an API Gateway in a microservices environment. List 3 critical services (e.g., authentication, rate limiting, request routing) that the gateway should handle before traffic reaches the back-end services.
For a field service application (used often without reliable network), outline 3 techniques for ensuring Offline Capability. Techniques must cover data storage (e.g., local database), synchronization, and handling of conflicts upon reconnection.
Define Horizontal Scaling. For a stateless web API, list 3 architectural components (e.g., load balancer, auto-scaling group) required to enable the application to scale horizontally in response to sudden traffic spikes.
Explain the function and primary performance benefit of using Database Connection Pooling in a high-traffic application. Describe how connection pooling reduces the overhead associated with frequent database requests.
Describe the use of Asynchronous Tasks (background processing) to improve the responsiveness of a web application. List 3 specific operations (e.g., sending emails, large file exports) that are ideal candidates for asynchronous handling.
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