overview.md

id	overview
title	Architecture Overview
sidebar_label	Architecture

Below is a C4-inspired diagram explaining the various componentry of the Sample Application. The DSL for the original C4 diagram is included in this repository (render with Structurizr Lite).

You can navigate to the individual codebases from this page.

C4 Container Diagrams

Note: Diagram images are auto-generated from workspace.dsl by a GitHub Actions workflow when changes to that file are merged.

These diagrams are auto-generated from workspace.dsl via GitHub Actions.

Full System

Progressive Views

View	Description
Single Service	Reference data only
Multiple Services (no DB)	Web, Account, People, RefData
Multiple Services (with DB)	Adds Position service and Database
Multiple Services (no async)	Adds Trade Feed
Full System	Complete system

Simplified Overview (Mermaid)

flowchart LR
  Trader[Trader] -->|Manage accounts, trades, positions| Web[Web GUI]

  subgraph TraderX["Simple Trading System"]
    Web
    Account[Account Service]
    Position[Position Service]
    TradeSvc[Trade Service]
    TradeProc[Trade Processor]
    RefData[Reference Data Service]
    People[People Service]
    Feed[Trade Feed]
    DB[(Database)]
  end

  UserDir[User Directory]

  Web -->|REST| Account
  Web -->|REST| Position
  Web -->|REST| TradeSvc
  Web -->|REST| RefData
  Web -->|REST| People
  Web -->|WebSocket| Feed

  Account -->|SQL| DB
  Position -->|SQL| DB
  TradeProc -->|SQL| DB

  TradeSvc -->|Publish| Feed
  TradeProc -->|Consume/Publish| Feed

  TradeSvc -->|Validate account| Account
  TradeSvc -->|Validate ticker| RefData
  Account -->|Validate people| People
  People -->|LDAP| UserDir

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See Also: Sequence Diagrams and Flows