#Patterns

25 questions

Compare composition patterns: render props, HOCs, and custom hooks.React#patternsSenior
What is the Flux architecture?State Management#patternsMiddle
When is Context a good state solution and when not?State Management#patternsMiddle
What is state normalization?State Management#patternsMiddle
What are state machines and when do they help?State Management#patternsMiddle
What are optimistic updates and how do you implement them safely?State Management#patternsSenior
How do you persist and hydrate state?State Management#patternsSenior
What is the publish/subscribe pattern for state, and its trade-offs?State Management#patternsMiddle
What is an API gateway and why is it used?Microservices#patternsJunior
What is service discovery?Microservices#communicationJunior
What is the database-per-service principle?Microservices#dataJunior
How do you define service boundaries using DDD bounded contexts?Microservices#architectureMiddle
How do you manage data when each service has its own database?Microservices#dataMiddle
What is the saga pattern and how does orchestration differ from choreography?Microservices#patternsMiddle
What is event-driven architecture in microservices?Microservices#communicationMiddle
What is the Backend-for-Frontend pattern and how does it relate to an API gateway?Microservices#patternsMiddle
What resilience patterns protect microservices (circuit breaker, retry, timeout, bulkhead)?Microservices#resilienceMiddle
How do you handle centralized configuration and secrets across services?Microservices#patternsMiddle
How do you version APIs and keep backward compatibility across services?Microservices#communicationMiddle
What is consumer-driven contract testing?Microservices#communicationMiddle
How do you migrate a monolith to microservices using the strangler-fig pattern?Microservices#architectureSenior
How do you achieve consistency across services using eventual consistency, CQRS, and event sourcing?Microservices#dataSenior
What is an observability strategy for logs, metrics, and traces at scale?Microservices#resilienceSenior
What deployment strategies (CI/CD, canary, blue-green) suit microservices?Microservices#patternsSenior
What is the distributed monolith and other microservices anti-patterns?Microservices#architectureSenior