# payaljaiswalbdh/revenue_pulse architecture

> Architecture diagram of the GitHub repository payaljaiswalbdh/revenue_pulse, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-06-24). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/payaljaiswalbdh/revenue_pulse
- Repository: https://github.com/payaljaiswalbdh/revenue_pulse

## Overview

1. Revenue_pulse is a two-tier MERN CRM: a React + TypeScript frontend and a Node.js/Express backend, with MongoDB/Mongoose as the primary persistence layer. The backend exposes REST APIs consumed by the UI via Axios.

2. The core domain boundary is customer operations: client records, payment tracking, follow-up scheduling, and communication history. These are the main entities the application revolves around, and they likely share MongoDB collections/documents through Mongoose models.

3. The frontend is the presentation and workflow layer. It handles navigation with React Router, renders dashboard charts/graphs, and provides CRUD screens for clients, invoices/payments, and follow-ups. Tailwind CSS suggests a utility-driven UI with likely a componentized layout.

4. Authentication is a separate security boundary on the backend, using JWT for login/signup sessions. This implies protected routes on both sides: the API enforces access control, and the frontend conditionally shows authenticated app areas.

5. Payment tracking is a data-centric subsystem. Users record invoices and payments, and the system distinguishes pending vs completed balances, likely feeding both client detail views and aggregate dashboard metrics.

6. Automated reminders are an integration-heavy subsystem. Twilio is used for SMS notifications and Nodemailer for email notifications, so the backend is responsible for composing reminder events and dispatching them to external communication services.

7. Follow-ups appear to be time-based workflow items rather than just notes. The app supports scheduling, alerting when follow-up time arrives, and marking follow-ups complete, which suggests a background or scheduled process in the backend even though the exact job runner is not specified in the README.

8. The dashboard is the summary layer over transactional data. It aggregates revenue, pending payments, recent activity, and trend charts, so it depends on read-heavy API endpoints that combine client, payment, and follow-up data into business-health views.

9. The backend is the orchestration boundary for business rules. It likely validates CRUD operations, computes payment status, triggers reminders, and coordinates writes to MongoDB plus outbound calls to Twilio/Nodemailer.

10. The main external dependencies that materially shape the architecture are MongoDB for durable business data, Twilio for SMS, and email delivery via Nodemailer/Gmail. Those integrations make the system more than a CRUD app: it is a CRM with outbound automation.

11. At a high level, the flow is: user action in React UI → API request to Express → business logic/model update in MongoDB → optional notification dispatch through Twilio or email → updated state returned to the dashboard.

12. For an architecture diagram, the key boxes are: React/TypeScript frontend, Express API layer, Mongoose/MongoDB data store, JWT auth, and two notification channels (Twilio SMS and Nodemailer email), with the dashboard consuming aggregated data from the same backend.

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_frontend["Frontend"]
  node_ui["React App<br/>frontend"]
  node_router(("Routing<br/>frontend"))
  node_dashboard["Dashboard<br/>frontend"]
  node_crm["CRM Screens<br/>frontend"]
end

subgraph group_backend["Backend"]
  node_api["Express API<br/>backend"]
  node_auth{{"JWT Auth<br/>backend"}}
  node_rules["Business Logic<br/>backend"]
  node_clients["Client Ops<br/>domain"]
  node_payments["Payments<br/>domain"]
  node_followups["Follow-ups<br/>domain"]
end

subgraph group_data["Data"]
  node_db[("MongoDB<br/>datastore")]
  node_models["Mongoose Models<br/>data-model"]
end

subgraph group_integrations["Integrations"]
  node_sms["Twilio SMS<br/>integration"]
  node_mail["Email Service<br/>integration"]
end

node_ui -->|"navigate"| node_router
node_router -->|"shows"| node_dashboard
node_router -->|"shows"| node_crm
node_ui -->|"axios"| node_api
node_api -->|"protects"| node_auth
node_api -->|"orchestrates"| node_rules
node_rules -->|"uses"| node_models
node_models -->|"persists"| node_db
node_rules -->|"manages"| node_clients
node_rules -->|"manages"| node_payments
node_rules -->|"manages"| node_followups
node_payments -->|"feeds"| node_dashboard
node_clients -->|"feeds"| node_dashboard
node_followups -->|"feeds"| node_dashboard
node_rules -->|"notifies"| node_sms
node_rules -->|"notifies"| node_mail

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_ui,node_router,node_dashboard,node_crm toneBlue
class node_api,node_auth,node_rules,node_clients,node_payments,node_followups toneAmber
class node_db,node_models toneMint
class node_sms,node_mail toneRose
```

## Components

### Frontend

React presentation and user workflows

- **React App**: frontend · React + TypeScript client for CRM workflows
- **Routing**: frontend · Client-side navigation and protected app views
- **Dashboard**: frontend · Revenue, activity, and trend summary screens
- **CRM Screens**: frontend · Client, invoice, payment, and follow-up CRUD views

### Backend

Express API, auth, and business logic

- **Express API**: backend · REST entrypoint for frontend requests
- **JWT Auth**: backend · Login and signup session security
- **Business Logic**: backend · Validation, status computation, and workflow orchestration
- **Client Ops**: domain · Client records and communication history
- **Payments**: domain · Invoices, balances, and payment status
- **Follow-ups**: domain · Scheduled follow-up items and completion tracking

### Data

Persistent CRM records and summaries

- **MongoDB**: datastore · Primary persistence store for CRM data
- **Mongoose Models**: data-model · Schemas and document access layer

### Integrations

Outbound notification services

- **Twilio SMS**: integration · Outbound text reminders and alerts
- **Email Service**: integration · Nodemailer-based email reminders

## Connections

- React App → Routing: navigate · Routes users through app sections
- Routing → Dashboard: shows · Opens summary and analytics views
- Routing → CRM Screens: shows · Opens customer operation screens
- React App → Express API: axios · Sends CRUD and dashboard requests
- Express API → JWT Auth: protects · Enforces authenticated access
- Express API → Business Logic: orchestrates · Routes requests into business workflows
- Business Logic → Mongoose Models: uses · Reads and writes domain documents
- Mongoose Models → MongoDB: persists · Stores CRM data in MongoDB
- Business Logic → Client Ops: manages · Handles client records and history
- Business Logic → Payments: manages · Tracks invoices, payments, and balances
- Business Logic → Follow-ups: manages · Schedules and completes follow-up work
- Payments → Dashboard: feeds · Supplies revenue and pending metrics
- Client Ops → Dashboard: feeds · Supplies recent activity and CRM summaries
- Follow-ups → Dashboard: feeds · Supplies upcoming and completed follow-up data
- Business Logic → Twilio SMS: notifies · Dispatches reminder SMS messages
- Business Logic → Email Service: notifies · Dispatches email reminders