ArchGen

Microservice Architecture Diagram

Focus: Gateway + Event Bus + Observability. Key areas: React, Next.js, OAuth2.

Use this as a block diagram of the system when explaining architecture.

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Diagram caption: Microservice Architecture Diagram (Gateway + Event Bus + Observability) has 4 layers: Clients & Gateway, Microservices Layer, Data & Messaging, Platform & Observability.

Prompt

Micro service architecture diagram for a modular platform. Clients access services through an API gateway with OAuth2 authentication and rate limiting. Core microservices include User, Order, Inventory, and Billing, each owning its own database. Use Kafka for event-driven communication and Redis for caching. Add service discovery and centralized configuration, plus tracing and logging for observability. Highlight circuit breakers and retries between services.
Highlights
  • Layer details · Clients & Gateway: Modules include Web/Mobile Clients, API Gateway, Auth & Identity.
  • Module responsibilities · Clients & Gateway / API Gateway: Enforce policies; Aggregate APIs; Protect services
  • Module responsibilities · Clients & Gateway / Web/Mobile Clients: Initiate requests; Render UI; Handle retries

Overview

Microservice Architecture Diagram (Gateway + Event Bus + Observability) has 4 layers: Clients & Gateway, Microservices Layer, Data & Messaging, Platform & Observability.

Layer details

Show all (4)
  • Clients & Gateway: Modules include Web/Mobile Clients, API Gateway, Auth & Identity.
  • Microservices Layer: Modules include User Service, Order Service, Inventory Service, Billing Service.
  • Data & Messaging: Modules include Service Datastores, Event Bus, Cache Layer.
  • Platform & Observability: Modules include Service Discovery, Telemetry & Tracing, Resilience Controls.

Module responsibilities

Show all (13)
  • Clients & Gateway / Web/Mobile Clients: Initiate requests; Render UI; Handle retries
  • Clients & Gateway / API Gateway: Enforce policies; Aggregate APIs; Protect services
  • Clients & Gateway / Auth & Identity: Authenticate users; Authorize access; Rotate tokens
  • Microservices Layer / User Service: Manage identities; Publish user events; Enforce policies
  • Microservices Layer / Order Service: Create orders; Track status; Emit events
  • Microservices Layer / Inventory Service: Update inventory; Prevent oversells; Sync warehouses
  • Microservices Layer / Billing Service: Charge customers; Handle disputes; Publish receipts
  • Data & Messaging / Service Datastores: Store service data; Isolate schemas; Ensure durability
  • Data & Messaging / Event Bus: Decouple services; Stream updates; Handle retries
  • Data & Messaging / Cache Layer: Reduce latency; Protect databases; Improve throughput
  • Platform & Observability / Service Discovery: Locate services; Remove unhealthy nodes; Route traffic
  • Platform & Observability / Telemetry & Tracing: Monitor latency; Detect errors; Support debugging
  • Platform & Observability / Resilience Controls: Prevent cascades; Handle failures; Protect dependencies

Key flows

Show all (3)
  • Order flow: clients call the API Gateway, which routes to Order Service; order events are published to Kafka and consumed by Inventory and Billing.
  • Data flow: each service writes to its own database, while Redis caches hot data to reduce read pressure.
  • Observability flow: traces and logs are collected by OpenTelemetry and surfaced in Grafana for incident response.