Microservices Challenges

Microservices Challenges An architecture diagram generated by Archify. Microservices Challenges · Traffic · Security · Observability · Resilience · Architecture component Microservices Challenges Traffic · Security · Observability · Resilience Implemented in code · Application code · Without Istio Implemented in code Application code Duplicate code · Repeated in each service · Without Istio Duplicate code Repeated in each service Inconsistent implementation · Varies per service · Without Istio Inconsistent implementation Varies per service Difficult maintenance · Rising cost of change · Without Istio Difficult maintenance Rising cost of change Automatic at infra level · Sidecar / mesh · Using Istio Automatic at infra level Sidecar / mesh Declarative config · Centrally managed YAML · Using Istio Declarative config Centrally managed YAML Consistent policy · Same for every service · Using Istio Consistent policy Same for every service No code changes needed · Canary · mTLS · tracing · Using Istio No code changes needed Canary · mTLS · tracing Traditional approach Istio Without Istio Using Istio Legend Application code Istio infra level Challenges

Microservices challenges

  • • Traffic management: shift traffic safely to a new version
  • • Security: encrypt and authenticate inter-service communication
  • • Observability: trace request flow across dozens of services
  • • Resilience: one service's failure propagates to the whole system

Without Istio

  • • Implemented directly in each service's application code
  • • The same logic is duplicated per service and implemented inconsistently
  • • Maintenance becomes difficult as a result

Using Istio

  • • Canary deployment via VirtualService, no code changes
  • • Automatic mTLS via PeerAuthentication STRICT
  • • Metrics and distributed tracing generated automatically
  • • Circuit Breaker configured via DestinationRule