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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
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.
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.
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