# rup-code/backend-course architecture

> Architecture diagram of the GitHub repository rup-code/backend-course, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-09-27). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/rup-code/backend-course
- Repository: https://github.com/rup-code/backend-course

## Overview

This repository is a hands-on Node.js learning curriculum, not one integrated application. A learner moves through terminal and runtime fundamentals, then modules and file handling, binary data and asynchronous streams, networking, and finally API, database, and MVC examples. The tree documents these distinct stages, while the empty README provides no overall product description. Most lessons appear as independent examples; the graph therefore avoids implying calls between them. Sampled todo routes show direct database operations, but the excerpts do not establish a single course-wide runtime workflow.

Main entry points: [`Section-12 Mastering Database Fundamentals with MongoDB/30_Integrating-Database-in-User-Routes/server/routes/fileRoutes.js`](https://github.com/rup-code/backend-course/blob/main/Section-12%20Mastering%20Database%20Fundamentals%20with%20MongoDB/30_Integrating-Database-in-User-Routes/server/routes/fileRoutes.js) (File API), [`Section-11 Building RESTful CRUD APIs with Express.js/37_Adding-Logout-and-User-Profile-Functionality/server/routes/directoryRoutes.js`](https://github.com/rup-code/backend-course/blob/main/Section-11%20Building%20RESTful%20CRUD%20APIs%20with%20Express.js/37_Adding-Logout-and-User-Profile-Functionality/server/routes/directoryRoutes.js) (Directory API), [`Section-13 Mastering MVC Architecture with Mongoose/01_introduction-to-mvc-architecture/routes/todoRoutes.js`](https://github.com/rup-code/backend-course/blob/main/Section-13%20Mastering%20MVC%20Architecture%20with%20Mongoose/01_introduction-to-mvc-architecture/routes/todoRoutes.js) (Todo CRUD), [`Section-13 Mastering MVC Architecture with Mongoose/03_views-in-action/controllers/todoController.js`](https://github.com/rup-code/backend-course/blob/main/Section-13%20Mastering%20MVC%20Architecture%20with%20Mongoose/03_views-in-action/controllers/todoController.js) (Todo Controller)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_runtime["Runtime Fundamentals"]
  node_terminal["Terminal Basics<br/>[app.js]"]
  node_process["Processes and Threads<br/>[app.js]"]
  node_modules["Node Modules<br/>[app.js]"]
end

subgraph group_data["Files and Data"]
  node_filesystem["File Operations<br/>[app.js]"]
  node_encoding["Text Encoding<br/>[app.js]"]
  node_buffers["Binary Buffers<br/>[app.js]"]
end

subgraph group_async["Async and Streams"]
  node_events["Event Emitters"]
  node_readstreams["Readable Streams<br/>[app.js]"]
  node_writestreams["Writable Streams<br/>[app.js]"]
  node_streampipes["Stream Piping<br/>[app.js]"]
end

subgraph group_network["Networking"]
  node_tcp["TCP Networking<br/>[app.js]"]
  node_udp["UDP Transfers<br/>[app.js]"]
end

subgraph group_apps["APIs and Persistence"]
  node_expressfiles["File API<br/>[fileRoutes.js]"]
  node_directories["Directory API<br/>[directoryRoutes.js]"]
  node_todocrud["Todo CRUD<br/>[todoRoutes.js]"]
  node_todocontroller["Todo Controller<br/>[todoController.js]"]
  node_mongodb[("MongoDB")]
  node_localfiles[("Stored Files")]
  node_jsonmetadata[("JSON Metadata")]
end

node_learner(("Learner"))

node_learner -->|"studies"| node_terminal
node_learner -->|"studies"| node_process
node_learner -->|"studies"| node_modules
node_learner -->|"studies"| node_filesystem
node_learner -->|"studies"| node_encoding
node_learner -->|"studies"| node_buffers
node_learner -->|"studies"| node_events
node_learner -->|"studies"| node_readstreams
node_learner -->|"studies"| node_writestreams
node_learner -->|"studies"| node_streampipes
node_learner -->|"studies"| node_tcp
node_learner -->|"studies"| node_udp
node_learner -->|"studies"| node_expressfiles
node_learner -->|"studies"| node_directories
node_learner -->|"studies"| node_todocrud
node_learner -->|"studies"| node_todocontroller
node_todocrud -->|"queries"| node_mongodb
node_todocontroller -->|"queries"| node_mongodb
node_expressfiles -->|"streams and removes"| node_localfiles
node_expressfiles -->|"reads and writes"| node_jsonmetadata
node_directories -->|"removes"| node_localfiles
node_directories -->|"reads and writes"| node_jsonmetadata

click node_terminal "https://github.com/rup-code/backend-course/blob/main/Section-02/01_introduction-to-terminal/app.js"
click node_process "https://github.com/rup-code/backend-course/blob/main/Section-03/03_what-is-process/app.js"
click node_modules "https://github.com/rup-code/backend-course/blob/main/Section-04%20Fundamentals%20of%20Node.js/07_ES6_Modules/app.js"
click node_filesystem "https://github.com/rup-code/backend-course/blob/main/Section-04%20Fundamentals%20of%20Node.js/22_Node.js-File-Operations-Rename-Delete-Move-Copy-More/app.js"
click node_encoding "https://github.com/rup-code/backend-course/blob/main/Section-05-Data-Representation-in-Computing/11-Understanding-UTF-8-in-Depth/app.js"
click node_buffers "https://github.com/rup-code/backend-course/blob/main/Section-06-Mastering-Buffers-Handling-Binary-Data-in-Node/07_Buffer-in-Nodejs/app.js"
click node_events "https://github.com/rup-code/backend-course/blob/main/Section-07-Event-Driven-Architecture-and-EventEmitter-in-Nodejs/05_Creating-Custom-EventEmitter/customEventEmitter.js"
click node_readstreams "https://github.com/rup-code/backend-course/blob/main/Section-08%20Node.js%20Streams%20-%20Handling%20Data%20Flow%20like%20a%20Pro/03_Readable_Streams/app.js"
click node_writestreams "https://github.com/rup-code/backend-course/blob/main/Section-08%20Node.js%20Streams%20-%20Handling%20Data%20Flow%20like%20a%20Pro/07_Writable-Streams/app.js"
click node_streampipes "https://github.com/rup-code/backend-course/blob/main/Section-08%20Node.js%20Streams%20-%20Handling%20Data%20Flow%20like%20a%20Pro/12_Piping-Using-Pipeline/app.js"
click node_tcp "https://github.com/rup-code/backend-course/blob/main/Section-10%20Networking%20with%20Core%20Node.js%20Modules/05_Creating-TCP-Server/app.js"
click node_udp "https://github.com/rup-code/backend-course/blob/main/Section-10%20Networking%20with%20Core%20Node.js%20Modules/04_Transferring-Files-Using-UDP/app.js"
click node_expressfiles "https://github.com/rup-code/backend-course/blob/main/Section-12%20Mastering%20Database%20Fundamentals%20with%20MongoDB/30_Integrating-Database-in-User-Routes/server/routes/fileRoutes.js"
click node_directories "https://github.com/rup-code/backend-course/blob/main/Section-11%20Building%20RESTful%20CRUD%20APIs%20with%20Express.js/37_Adding-Logout-and-User-Profile-Functionality/server/routes/directoryRoutes.js"
click node_todocrud "https://github.com/rup-code/backend-course/blob/main/Section-13%20Mastering%20MVC%20Architecture%20with%20Mongoose/01_introduction-to-mvc-architecture/routes/todoRoutes.js"
click node_todocontroller "https://github.com/rup-code/backend-course/blob/main/Section-13%20Mastering%20MVC%20Architecture%20with%20Mongoose/03_views-in-action/controllers/todoController.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_terminal,node_process,node_modules toneBlue
class node_filesystem,node_encoding,node_buffers toneAmber
class node_events,node_readstreams,node_writestreams,node_streampipes toneMint
class node_tcp,node_udp toneRose
class node_expressfiles,node_directories,node_todocrud,node_todocontroller,node_mongodb,node_localfiles,node_jsonmetadata,node_learner toneIndigo
```

## Components

### Runtime Fundamentals

- [Terminal Basics](https://github.com/rup-code/backend-course/blob/main/Section-02/01_introduction-to-terminal/app.js): `Section-02/01_introduction-to-terminal/app.js`
- [Processes and Threads](https://github.com/rup-code/backend-course/blob/main/Section-03/03_what-is-process/app.js): `Section-03/03_what-is-process/app.js`
- [Node Modules](https://github.com/rup-code/backend-course/blob/main/Section-04%20Fundamentals%20of%20Node.js/07_ES6_Modules/app.js): `Section-04 Fundamentals of Node.js/07_ES6_Modules/app.js`

### Files and Data

- [File Operations](https://github.com/rup-code/backend-course/blob/main/Section-04%20Fundamentals%20of%20Node.js/22_Node.js-File-Operations-Rename-Delete-Move-Copy-More/app.js): `Section-04 Fundamentals of Node.js/22_Node.js-File-Operations-Rename-Delete-Move-Copy-More/app.js`
- [Text Encoding](https://github.com/rup-code/backend-course/blob/main/Section-05-Data-Representation-in-Computing/11-Understanding-UTF-8-in-Depth/app.js): `Section-05-Data-Representation-in-Computing/11-Understanding-UTF-8-in-Depth/app.js`
- [Binary Buffers](https://github.com/rup-code/backend-course/blob/main/Section-06-Mastering-Buffers-Handling-Binary-Data-in-Node/07_Buffer-in-Nodejs/app.js): `Section-06-Mastering-Buffers-Handling-Binary-Data-in-Node/07_Buffer-in-Nodejs/app.js`

### Async and Streams

- [Event Emitters](https://github.com/rup-code/backend-course/blob/main/Section-07-Event-Driven-Architecture-and-EventEmitter-in-Nodejs/05_Creating-Custom-EventEmitter/customEventEmitter.js): `Section-07-Event-Driven-Architecture-and-EventEmitter-in-Nodejs/05_Creating-Custom-EventEmitter/customEventEmitter.js`
- [Readable Streams](https://github.com/rup-code/backend-course/blob/main/Section-08%20Node.js%20Streams%20-%20Handling%20Data%20Flow%20like%20a%20Pro/03_Readable_Streams/app.js): `Section-08 Node.js Streams - Handling Data Flow like a Pro/03_Readable_Streams/app.js`
- [Writable Streams](https://github.com/rup-code/backend-course/blob/main/Section-08%20Node.js%20Streams%20-%20Handling%20Data%20Flow%20like%20a%20Pro/07_Writable-Streams/app.js): `Section-08 Node.js Streams - Handling Data Flow like a Pro/07_Writable-Streams/app.js`
- [Stream Piping](https://github.com/rup-code/backend-course/blob/main/Section-08%20Node.js%20Streams%20-%20Handling%20Data%20Flow%20like%20a%20Pro/12_Piping-Using-Pipeline/app.js): `Section-08 Node.js Streams - Handling Data Flow like a Pro/12_Piping-Using-Pipeline/app.js`

### Networking

- [TCP Networking](https://github.com/rup-code/backend-course/blob/main/Section-10%20Networking%20with%20Core%20Node.js%20Modules/05_Creating-TCP-Server/app.js): `Section-10 Networking with Core Node.js Modules/05_Creating-TCP-Server/app.js`
- [UDP Transfers](https://github.com/rup-code/backend-course/blob/main/Section-10%20Networking%20with%20Core%20Node.js%20Modules/04_Transferring-Files-Using-UDP/app.js): `Section-10 Networking with Core Node.js Modules/04_Transferring-Files-Using-UDP/app.js`

### APIs and Persistence

- [File API](https://github.com/rup-code/backend-course/blob/main/Section-12%20Mastering%20Database%20Fundamentals%20with%20MongoDB/30_Integrating-Database-in-User-Routes/server/routes/fileRoutes.js): `Section-12 Mastering Database Fundamentals with MongoDB/30_Integrating-Database-in-User-Routes/server/routes/fileRoutes.js`
- [Directory API](https://github.com/rup-code/backend-course/blob/main/Section-11%20Building%20RESTful%20CRUD%20APIs%20with%20Express.js/37_Adding-Logout-and-User-Profile-Functionality/server/routes/directoryRoutes.js): `Section-11 Building RESTful CRUD APIs with Express.js/37_Adding-Logout-and-User-Profile-Functionality/server/routes/directoryRoutes.js`
- [Todo CRUD](https://github.com/rup-code/backend-course/blob/main/Section-13%20Mastering%20MVC%20Architecture%20with%20Mongoose/01_introduction-to-mvc-architecture/routes/todoRoutes.js): `Section-13 Mastering MVC Architecture with Mongoose/01_introduction-to-mvc-architecture/routes/todoRoutes.js`
- [Todo Controller](https://github.com/rup-code/backend-course/blob/main/Section-13%20Mastering%20MVC%20Architecture%20with%20Mongoose/03_views-in-action/controllers/todoController.js): `Section-13 Mastering MVC Architecture with Mongoose/03_views-in-action/controllers/todoController.js`
- **MongoDB**
- **Stored Files**
- **JSON Metadata**

### Other components

- **Learner**

## Connections

- Learner → Terminal Basics: studies
- Learner → Processes and Threads: studies
- Learner → Node Modules: studies
- Learner → File Operations: studies
- Learner → Text Encoding: studies
- Learner → Binary Buffers: studies
- Learner → Event Emitters: studies
- Learner → Readable Streams: studies
- Learner → Writable Streams: studies
- Learner → Stream Piping: studies
- Learner → TCP Networking: studies
- Learner → UDP Transfers: studies
- Learner → File API: studies
- Learner → Directory API: studies
- Learner → Todo CRUD: studies
- Learner → Todo Controller: studies
- Todo CRUD → MongoDB: queries
- Todo Controller → MongoDB: queries
- File API → Stored Files: streams and removes
- File API → JSON Metadata: reads and writes
- Directory API → Stored Files: removes
- Directory API → JSON Metadata: reads and writes