Top 50 microservices Interview Questions
The most frequently asked microservices questions across all roles and companies, ranked by real interview frequency. Updated daily.
Detect a directed circular dependency among IDFC FIRST Bank microservices using DFS with three-state graph traversal.
Idfc First Bank
Exiger
RubrikSimulate a TTL cache for API responses using a hash map and timestamp-based expiration.
American ExpressUse a hash map to find microservices whose peak JVM memory exceeds a threshold.
BarclaysProduce a deterministic dependency-injection startup order and identify Singleton services using topological sorting.
United AirlinesProcess credit, debit authorization, and ping operations while maintaining per-account balances.
Current (NY)Use BFS to find the shortest directed dependency path between two SAP BTP microservices.
SAPValidate retry-aware microservice request traces using hash maps and invariant checks.
Sprinter HealthRoute requests to healthy microservice instances using round-robin balancing and per-service state.
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