**Why Robust Handling**: APIs fail—transient (5xx, timeout) vs. permanent (4xx). Retrying 400 wastes time; not retrying 503 causes false failures. **Strategy**: Exponential backoff with jitter to avoid thundering herd; cap retries (3-5); circuit breaker after consecutive...
This easy-level General/Other question appears frequently in data engineering interviews at companies like Warner Bros Discovery. While less common, it tests deeper understanding that distinguishes strong candidates.
Start by clearly defining the core concept being asked about. Interviewers want to see that you understand the fundamentals before diving into implementation details. Structure your answer with a definition, then explain the practical application with a concise example.
Why Robust Handling: APIs fail—transient (5xx, timeout) vs. permanent (4xx). Retrying 400 wastes time; not retrying 503 causes false failures.
Strategy: Exponential backoff with jitter to avoid thundering herd; cap retries (3-5); circuit breaker after consecutive failures. Idempotency keys for POST/PUT.
Cost: Retries add latency and load; distinguish retriable vs. non-retriable. Log request IDs for correlation. At scale: circuit breakers protect downstream.
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Analyze My Answer — FreeAccording to DataEngPrep.tech, this is one of the most frequently asked General/Other interview questions, reported at 1 company. DataEngPrep.tech maintains a curated database of 1,863+ real data engineering interview questions across 7 categories, verified by industry professionals.