# mgalen007/turbo-placeholder architecture

> Architecture diagram of the GitHub repository mgalen007/turbo-placeholder, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-29). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/mgalen007/turbo-placeholder
- Repository: https://github.com/mgalen007/turbo-placeholder

## Overview

This is an Express mock API that exposes read-only JSONPlaceholder resources for users, posts, comments, albums, photos, and todos. The workflow is an HTTP request entering the app, dispatching to a resource router, and calling its service for a collection or item. Services check Redis first; on a miss they fetch JSONPlaceholder data, cache it for 100 seconds, and return it. The README is empty, and several routers and services were not sampled; their paths and analogous behavior are supported by the file tree, but no additional internal wiring is assumed.

Main entry points: [`app.js`](https://github.com/mgalen007/turbo-placeholder/blob/main/app.js) (Express app), [`modules/redis/redis.client.js`](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/redis/redis.client.js) (Redis client), [`modules/users/users.service.js`](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/users/users.service.js) (Users service), [`modules/posts/posts.service.js`](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/posts/posts.service.js) (Posts service)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_api["API entry"]
  node_app["Express app<br/>[app.js]"]
end

subgraph group_social["Social data"]
  node_users_router["Users routes<br/>[users.router.js]"]
  node_users_service["Users service<br/>[users.service.js]"]
  node_posts_router["Posts routes<br/>[posts.router.js]"]
  node_posts_service["Posts service<br/>[posts.service.js]"]
  node_comments_router["Comments routes<br/>[comments.router.js]"]
  node_comments_service["Comments service"]
end

subgraph group_media["Media data"]
  node_albums_router["Albums routes<br/>[albums.router.js]"]
  node_albums_service["Albums service<br/>[albums.service.js]"]
  node_photos_router["Photos routes<br/>[photos.router.js]"]
  node_photos_service["Photos service<br/>[photos.service.js]"]
end

subgraph group_tasks["Task data"]
  node_todos_router["Todos routes<br/>[todos.router.js]"]
  node_todos_service["Todos service<br/>[todos.service.js]"]
end

subgraph group_cache["Cache runtime"]
  node_redis_client["Redis client<br/>[redis.client.js]"]
  node_env["Redis config<br/>[env.js]"]
  node_redis_store[("Redis store")]
end

node_caller(("API caller"))
node_jsonplaceholder["JSONPlaceholder"]

node_caller -->|"sends request"| node_app
node_app -->|"dispatches"| node_users_router
node_app -->|"dispatches"| node_posts_router
node_app -->|"dispatches"| node_comments_router
node_app -->|"dispatches"| node_albums_router
node_app -->|"dispatches"| node_photos_router
node_app -->|"dispatches"| node_todos_router
node_users_router -->|"calls"| node_users_service
node_posts_router -->|"calls"| node_posts_service
node_comments_router -->|"calls"| node_comments_service
node_albums_router -->|"calls"| node_albums_service
node_photos_router -->|"calls"| node_photos_service
node_todos_router -->|"calls"| node_todos_service
node_users_service -->|"reads/writes"| node_redis_client
node_posts_service -->|"reads/writes"| node_redis_client
node_comments_service -->|"reads/writes"| node_redis_client
node_albums_service -->|"reads/writes"| node_redis_client
node_photos_service -->|"reads/writes"| node_redis_client
node_todos_service -->|"reads/writes"| node_redis_client
node_redis_client -->|"connects"| node_redis_store
node_env -->|"provides settings"| node_redis_client
node_users_service -->|"fetches on miss"| node_jsonplaceholder
node_posts_service -->|"fetches on miss"| node_jsonplaceholder
node_comments_service -->|"fetches on miss"| node_jsonplaceholder
node_albums_service -->|"fetches on miss"| node_jsonplaceholder
node_photos_service -->|"fetches on miss"| node_jsonplaceholder
node_todos_service -->|"fetches on miss"| node_jsonplaceholder

click node_app "https://github.com/mgalen007/turbo-placeholder/blob/main/app.js"
click node_users_router "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/users/users.router.js"
click node_users_service "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/users/users.service.js"
click node_posts_router "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/posts/posts.router.js"
click node_posts_service "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/posts/posts.service.js"
click node_comments_router "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/comments/comments.router.js"
click node_comments_service "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/comments/comments.service.js"
click node_albums_router "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/albums/albums.router.js"
click node_albums_service "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/albums/albums.service.js"
click node_photos_router "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/photos/photos.router.js"
click node_photos_service "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/photos/photos.service.js"
click node_todos_router "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/todos/todos.router.js"
click node_todos_service "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/todos/todos.service.js"
click node_redis_client "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/redis/redis.client.js"
click node_env "https://github.com/mgalen007/turbo-placeholder/blob/main/modules/config/env.js"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_app toneBlue
class node_users_router,node_users_service,node_posts_router,node_posts_service,node_comments_router,node_comments_service toneAmber
class node_albums_router,node_albums_service,node_photos_router,node_photos_service,node_caller toneMint
class node_todos_router,node_todos_service toneRose
class node_redis_client,node_env,node_redis_store,node_jsonplaceholder toneIndigo
```

## Components

### API entry

- [Express app](https://github.com/mgalen007/turbo-placeholder/blob/main/app.js): `app.js`

### Social data

- [Users routes](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/users/users.router.js): `modules/users/users.router.js`
- [Users service](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/users/users.service.js): `modules/users/users.service.js`
- [Posts routes](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/posts/posts.router.js): `modules/posts/posts.router.js`
- [Posts service](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/posts/posts.service.js): `modules/posts/posts.service.js`
- [Comments routes](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/comments/comments.router.js): `modules/comments/comments.router.js`
- [Comments service](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/comments/comments.service.js): `modules/comments/comments.service.js`

### Media data

- [Albums routes](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/albums/albums.router.js): `modules/albums/albums.router.js`
- [Albums service](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/albums/albums.service.js): `modules/albums/albums.service.js`
- [Photos routes](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/photos/photos.router.js): `modules/photos/photos.router.js`
- [Photos service](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/photos/photos.service.js): `modules/photos/photos.service.js`

### Task data

- [Todos routes](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/todos/todos.router.js): `modules/todos/todos.router.js`
- [Todos service](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/todos/todos.service.js): `modules/todos/todos.service.js`

### Cache runtime

- [Redis client](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/redis/redis.client.js): `modules/redis/redis.client.js`
- [Redis config](https://github.com/mgalen007/turbo-placeholder/blob/main/modules/config/env.js): `modules/config/env.js`
- **Redis store**

### Other components

- **API caller**
- **JSONPlaceholder**

## Connections

- API caller → Express app: sends request
- Express app → Users routes: dispatches
- Express app → Posts routes: dispatches
- Express app → Comments routes: dispatches
- Express app → Albums routes: dispatches
- Express app → Photos routes: dispatches
- Express app → Todos routes: dispatches
- Users routes → Users service: calls
- Posts routes → Posts service: calls
- Comments routes → Comments service: calls
- Albums routes → Albums service: calls
- Photos routes → Photos service: calls
- Todos routes → Todos service: calls
- Users service → Redis client: reads/writes
- Posts service → Redis client: reads/writes
- Comments service → Redis client: reads/writes
- Albums service → Redis client: reads/writes
- Photos service → Redis client: reads/writes
- Todos service → Redis client: reads/writes
- Redis client → Redis store: connects
- Redis config → Redis client: provides settings
- Users service → JSONPlaceholder: fetches on miss
- Posts service → JSONPlaceholder: fetches on miss
- Comments service → JSONPlaceholder: fetches on miss
- Albums service → JSONPlaceholder: fetches on miss
- Photos service → JSONPlaceholder: fetches on miss
- Todos service → JSONPlaceholder: fetches on miss