Platform Engineer
Building Production Microservices

11-Microservice SaaS Platform

API Gateway · JWT Edge Auth · Multi-Tenant Isolation · Analytics Pipeline

          flowchart TD
          
          %% ========================
          %% FRONTEND LAYER
          %% ========================
          
          subgraph Frontend["🎨 Frontend Layer"]
              Dashboard["React Dashboard
Tenant UI :3000"]
          end
          
          %% ========================
          %% EDGE / GATEWAY LAYER
          %% ========================
          
          subgraph Gateway["⚡ Edge / Gateway Layer"]
              API["API Gateway :9000
━━━━━━━━━━━━
✓ JWT Validation
✓ Rate Limiting
✓ Circuit Breakers
✓ Distributed Tracing"]
          end
          
          %% ========================
          %% CORE PLATFORM SERVICES
          %% ========================
          
          subgraph Core["🔐 Core Identity Layer"]
              Auth["Auth Service :8001
━━━━━━
JWT Issuance
User Management"]
              Tenant["Tenant Service :8002
━━━━━━
Org Isolation
Member Roles"]
          end
          
          %% ========================
          %% ANALYTICS PLATFORM LAYER
          %% ========================
          
          subgraph Analytics["📊 Analytics Platform Layer"]
              AnalyticsAPI["Analytics Service :8000
━━━━━━━━━━━
Aggregations
Reports & Insights"]
              
              Parser["Parser Service :8004
━━━━━━
Statement Ingestion
Data Normalization"]
              Categorizer["Categorizer :8009
━━━━━━
ML Classification
Rule Engine"]
              Cashflow["Cashflow Service :8005
━━━━━━
Trend Detection
Forecasting"]
          end
          
          %% ========================
          %% BILLING + INTEGRATIONS
          %% ========================
          
          subgraph Billing["💰 Billing & Integrations Layer"]
              BillingAPI["Billing Service :8008
━━━━━━
Subscriptions
Invoicing"]
              Payment["Payment Service
M-PESA Daraja
━━━━━━
STK Push
Callbacks"]
              Webhook["Webhook Service :8010
━━━━━━
Event Delivery
Integrations"]
          end
          
          %% ========================
          %% REQUEST FLOW
          %% ========================
          
          Dashboard --> API
          
          API --> Auth
          API --> Tenant
          API --> AnalyticsAPI
          API --> BillingAPI
          API --> Webhook
          
          AnalyticsAPI --> Parser
          AnalyticsAPI --> Categorizer
          AnalyticsAPI --> Cashflow
          
          BillingAPI --> Payment
          Webhook --> Payment