Stack
MERN Stack (Fullstack JS)
MongoDB, Express, React, Node.js. The JavaScript monolith.
Architecture Diagram
%% Autogenerated mern-stack
graph TD
classDef standard fill:#1e293b,stroke:#38bdf8,stroke-width:1px,color:#e5e7eb;
classDef c-actor fill:#1e293b,stroke:#e5e7eb,stroke-width:1px,stroke-dasharray: 5 5,color:#e5e7eb;
classDef c-compute fill:#422006,stroke:#fb923c,stroke-width:1px,color:#fed7aa;
classDef c-database fill:#064e3b,stroke:#34d399,stroke-width:1px,color:#d1fae5;
classDef c-network fill:#2e1065,stroke:#a855f7,stroke-width:1px,color:#f3e8ff;
classDef c-storage fill:#450a0a,stroke:#f87171,stroke-width:1px,color:#fee2e2;
classDef c-security fill:#450a0a,stroke:#f87171,stroke-width:1px,color:#fee2e2;
classDef c-gateway fill:#2e1065,stroke:#a855f7,stroke-width:1px,color:#f3e8ff;
classDef c-container fill:#422006,stroke:#facc15,stroke-width:1px,color:#fef9c3;
subgraph cloud ["Deployment Infrastructure"]
direction TB
cdn(("CDN / Storage
network
Serves React Bundle")) class cdn c-network api("Express API
compute
Node.js Backend") class api c-compute db[("MongoDB
database
Document Store")] class db c-database end %% Orphans users(("Users
actor
Browser / Mobile")) class users c-actor spa("React SPA
container
Client-Side App") class spa c-compute %% Edges users -.-> cdn users -.-> spa spa -.-> api api -.-> db
network
Serves React Bundle")) class cdn c-network api("Express API
compute
Node.js Backend") class api c-compute db[("MongoDB
database
Document Store")] class db c-database end %% Orphans users(("Users
actor
Browser / Mobile")) class users c-actor spa("React SPA
container
Client-Side App") class spa c-compute %% Edges users -.-> cdn users -.-> spa spa -.-> api api -.-> db
Description
The MERN stack is a pure JavaScript stack for building modern single-page applications (SPAs).
It features React for the frontend, Node.js/Express for the backend API, and MongoDB for JSON-native document storage.
Tech Stack
| Component | Technology |
|---|---|
| Frontend | React |
| Backend | Node.js (Express) |
| Db | MongoDB |
| Host | VM / PaaS |
System Components
The following distinct entities are defined in this architecture:
| Component | Type | Notes |
|---|---|---|
| Users | actor | Browser / Mobile |
| CDN / Storage | network | Serves React Bundle |
| React SPA | container | Client-Side App |
| Express API | compute | Node.js Backend |
| MongoDB | database | Document Store |
Interested in this architecture?
Let's discuss how to adapt the MERN Stack (Fullstack JS) stack for your specific needs.
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