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Message Queue

Giriş

Message Queue sistemleri, modern .NET uygulamalarında asynchronous communication, decoupling, scalability ve reliability için kritik öneme sahiptir. Mid-level geliştiriciler için message queue teknolojilerini anlamak, distributed systems, microservices architecture ve event-driven programming konularında uzmanlaşmak, enterprise-level uygulamalar geliştirmek için gereklidir. Bu bölüm, RabbitMQ ve Apache Kafka konularını kapsar.

Kapsanan Konular

1. RabbitMQ

Advanced message queuing protocol (AMQP), message routing, ve RabbitMQ integration.

Öğrenilecekler: - RabbitMQ setup - Message routing - Exchange types - Queue management - Message persistence

2. Apache Kafka

Distributed streaming platform, event streaming, ve Kafka integration.

Öğrenilecekler: - Kafka setup - Topic management - Partition strategy - Consumer groups - Stream processing

Neden Önemli?

1. System Decoupling

  • Loose coupling between services
  • Independent service development
  • Technology agnostic communication
  • Service isolation

2. Scalability

  • Horizontal scaling
  • Load distribution
  • Performance optimization
  • Resource utilization

3. Reliability

  • Message persistence
  • Fault tolerance
  • Message delivery guarantees
  • Error handling

4. Asynchronous Processing

  • Non-blocking operations
  • Background processing
  • Event-driven architecture
  • Real-time processing

Mülakat Soruları

Temel Sorular

  1. Message Queue nedir?

  2. Cevap: Asynchronous communication, message storage, service decoupling.

  3. RabbitMQ nedir?

  4. Cevap: AMQP message broker, message routing, exchange types.

  5. Apache Kafka nedir?

  6. Cevap: Distributed streaming platform, event streaming, real-time processing.

  7. Message Queue ne zaman kullanılır?

  8. Cevap: Service decoupling, asynchronous processing, load balancing.

  9. AMQP nedir?

  10. Cevap: Advanced Message Queuing Protocol, message routing, exchange types.

Teknik Sorular

  1. RabbitMQ exchange types nelerdir?

  2. Cevap: Direct, Fanout, Topic, Headers exchange types.

  3. Kafka partition strategy nasıl belirlenir?

  4. Cevap: Key-based partitioning, round-robin, custom partitioning.

  5. Message persistence nasıl sağlanır?

  6. Cevap: Message acknowledgment, persistent messages, disk storage.

  7. Consumer groups nasıl çalışır?

  8. Cevap: Load balancing, parallel processing, offset management.

  9. Message ordering nasıl garanti edilir?

  10. Cevap: Single partition, key-based routing, sequential processing.

Best Practices

1. Message Design

  • Design clear message contracts
  • Use appropriate message formats
  • Implement message validation
  • Plan for message evolution
  • Handle backward compatibility

2. Queue Management

  • Implement proper queue naming
  • Set appropriate TTL values
  • Plan for queue cleanup
  • Monitor queue performance
  • Implement dead letter queues

3. Error Handling

  • Implement retry mechanisms
  • Handle poison messages
  • Implement circuit breakers
  • Monitor error rates
  • Plan for failure scenarios

4. Performance Optimization

  • Optimize message size
  • Use appropriate batching
  • Implement connection pooling
  • Monitor throughput
  • Plan for scaling

5. Monitoring & Maintenance

  • Monitor queue health
  • Track message throughput
  • Monitor consumer lag
  • Implement alerting
  • Plan for maintenance

Kaynaklar