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Design Pattern

Saga Pattern​

  1. Used to manage distributed transactions across multiple services.
  2. Break the busness logic into smaller transactions.
  3. Each service manage its own database.
  4. Coming back later..

Circuit Breaker​

  1. To prevent cascading failure in microservices.
  2. CLOSED: All requests are allowed, if failure rate exceed a threshold, transition to OPEN.
  3. OPEN: Requests are blocked, and a fallback response is returned to prevent overloading the failing service.
  4. HALF-OPEN: A small number of requests are allowed to go through to check if the service is still failing. If the failure rate is low, transition to CLOSED, otherwise transition to OPEN.