From Monolith to Microservices

From Monolith to Microservices An architecture diagram generated by Archify. Monolithic application · Single process · Monolithic era Monolithic application Single process Service A · Microservices era Service A Service B · Microservices era Service B Service C · Microservices era Service C Service D · Microservices era Service D Service E · Microservices era Service E Transition Monolithic era Microservices era Legend Application / service

New problems after the split

  • • Inter-service communication: more network calls, latency and failure propagation
  • • Observability: debugging is hard without distributed tracing
  • • Security: service-to-service authentication and encryption (mTLS) complexity
  • • Traffic control and failure handling implemented in code per service