Fullstack Tech Stack Guide

Fullstack Tech Stack Guide

Technology selection guide with trade-offs, use cases, and integration patterns for modern fullstack development.

Table of Contents

• Frontend Frameworks
• Backend Frameworks
• Databases
• ORMs and Query Builders
• Authentication Solutions
• Deployment Platforms
• Stack Recommendations

Frontend Frameworks

Next.js

Best for: Production React apps, SEO-critical sites, full-stack applications

When to choose:

• Need SSR/SSG for SEO
• Building a product that may scale
• Want full-stack in one framework
• Team familiar with React

// App Router pattern
// app/users/page.tsx
async function UsersPage() {
  const users = await db.user.findMany(); // Server component
  return <UserList users={users} />;
}

// app/users/[id]/page.tsx
export async function generateStaticParams() {
  const users = await db.user.findMany();
  return users.map((user) => ({ id: user.id }));
}

React + Vite

Best for: SPAs, dashboards, internal tools

When to choose:

• Building internal dashboards
• SEO not important
• Need maximum flexibility
• Prefer decoupled frontend/backend

Vue 3

Best for: Teams transitioning from jQuery, progressive enhancement

When to choose:

• Team new to modern frameworks
• Progressive enhancement needed
• Prefer official solutions (Pinia, Vue Router)

Comparison Matrix

Backend Frameworks

Node.js Ecosystem

Express.js

import express from "express";
import { userRouter } from "./routes/users";

const app = express();
app.use(express.json());
app.use("/api/users", userRouter);
app.listen(3000);

Fastify

import Fastify from "fastify";

const app = Fastify({ logger: true });

app.get("/users/:id", {
  schema: {
    params: { type: "object", properties: { id: { type: "string" } } },
    response: { 200: UserSchema },
  },
  handler: async (request) => {
    return db.user.findUnique({ where: { id: request.params.id } });
  },
});

NestJS

@Controller("users")
export class UsersController {
  constructor(private usersService: UsersService) {}

  @Get(":id")
  findOne(@Param("id") id: string) {
    return this.usersService.findOne(id);
  }

  @Post()
  @UseGuards(AuthGuard)
  create(@Body() createUserDto: CreateUserDto) {
    return this.usersService.create(createUserDto);
  }
}

Python Ecosystem

FastAPI

from fastapi import FastAPI, Depends
from sqlalchemy.orm import Session

app = FastAPI()

@app.get("/users/{user_id}", response_model=UserResponse)
async def get_user(user_id: int, db: Session = Depends(get_db)):
    user = db.query(User).filter(User.id == user_id).first()
    if not user:
        raise HTTPException(status_code=404)
    return user

Django

Framework Selection Guide

Databases

PostgreSQL

Best for: Most applications, relational data, ACID compliance

-- JSON support
CREATE TABLE users (
  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
  email VARCHAR(255) UNIQUE NOT NULL,
  profile JSONB DEFAULT '{}',
  created_at TIMESTAMPTZ DEFAULT NOW()
);

-- Full-text search
CREATE INDEX users_search_idx ON users
  USING GIN (to_tsvector('english', email || ' ' || profile->>'name'));

SELECT * FROM users
WHERE to_tsvector('english', email || ' ' || profile->>'name')
  @@ to_tsquery('john');

MongoDB

Best for: Document-heavy apps, flexible schemas, rapid prototyping

// Flexible schema
const userSchema = new Schema({
  email: { type: String, required: true, unique: true },
  profile: {
    name: String,
    preferences: Schema.Types.Mixed, // Any structure
  },
  orders: [{ type: Schema.Types.ObjectId, ref: "Order" }],
});

Redis

Best for: Caching, sessions, real-time features, queues

// Session storage
await redis.set(`session:${sessionId}`, JSON.stringify(user), "EX", 3600);

// Rate limiting
const requests = await redis.incr(`rate:${ip}`);
if (requests === 1) await redis.expire(`rate:${ip}`, 60);
if (requests > 100) throw new TooManyRequestsError();

// Pub/Sub
redis.publish("notifications", JSON.stringify({ userId, message }));

Database Selection Matrix

ORMs and Query Builders

Prisma

Best for: TypeScript projects, schema-first development

// schema.prisma
model User {
  id        String   @id @default(cuid())
  email     String   @unique
  posts     Post[]
  profile   Profile?
  createdAt DateTime @default(now())
}

// Usage - fully typed
const user = await prisma.user.findUnique({
  where: { email: "user@example.com" },
  include: { posts: true, profile: true },
});
// user.posts is Post[] - TypeScript knows

Drizzle

Best for: SQL-first TypeScript, performance-critical apps

// Schema definition
const users = pgTable("users", {
  id: uuid("id").primaryKey().defaultRandom(),
  email: varchar("email", { length: 255 }).notNull().unique(),
  createdAt: timestamp("created_at").defaultNow(),
});

// Query - SQL-like syntax
const result = await db
  .select()
  .from(users)
  .where(eq(users.email, "user@example.com"))
  .leftJoin(posts, eq(posts.userId, users.id));

SQLAlchemy (Python)

# Model definition
class User(Base):
    __tablename__ = "users"

    id = Column(UUID, primary_key=True, default=uuid4)
    email = Column(String(255), unique=True, nullable=False)
    posts = relationship("Post", back_populates="author")

# Query
users = session.query(User)\
    .filter(User.email.like("%@example.com"))\
    .options(joinedload(User.posts))\
    .all()

Authentication Solutions

Auth.js (NextAuth)

Best for: Next.js apps, social logins

// app/api/auth/[...nextauth]/route.ts
import NextAuth from "next-auth";
import GitHub from "next-auth/providers/github";
import Credentials from "next-auth/providers/credentials";

export const { handlers, auth, signIn, signOut } = NextAuth({
  providers: [
    GitHub,
    Credentials({
      credentials: { email: {}, password: {} },
      authorize: async (credentials) => {
        const user = await verifyCredentials(credentials);
        return user;
      },
    }),
  ],
  callbacks: {
    jwt({ token, user }) {
      if (user) token.role = user.role;
      return token;
    },
  },
});

Clerk

Best for: Rapid development, hosted solution

// Middleware
import { clerkMiddleware } from "@clerk/nextjs/server";

export default clerkMiddleware();

// Usage
import { auth } from "@clerk/nextjs/server";

export async function GET() {
  const { userId } = await auth();
  if (!userId) return new Response("Unauthorized", { status: 401 });
  // ...
}

Custom JWT

Best for: Full control, microservices

// Token generation
function generateTokens(user: User) {
  const accessToken = jwt.sign(
    { sub: user.id, role: user.role },
    process.env.JWT_SECRET,
    { expiresIn: "15m" }
  );

  const refreshToken = jwt.sign(
    { sub: user.id, version: user.tokenVersion },
    process.env.REFRESH_SECRET,
    { expiresIn: "7d" }
  );

  return { accessToken, refreshToken };
}

// Middleware
function authenticate(req, res, next) {
  const token = req.headers.authorization?.replace("Bearer ", "");
  if (!token) return res.status(401).json({ error: "No token" });

  try {
    req.user = jwt.verify(token, process.env.JWT_SECRET);
    next();
  } catch {
    res.status(401).json({ error: "Invalid token" });
  }
}

Deployment Platforms

Vercel

Best for: Next.js, frontend-focused teams

Railway

Best for: Full-stack apps, databases included

AWS (ECS/Lambda)

Best for: Enterprise, complex requirements

Deployment Selection

Stack Recommendations

Startup MVP

Frontend: Next.js 14 (App Router)
Backend:  Next.js API Routes
Database: PostgreSQL (Neon/Supabase)
Auth:     Auth.js or Clerk
Deploy:   Vercel
Cache:    Vercel KV or Upstash Redis

Why: Fastest time to market, single deployment, good scaling path.

SaaS Product

Frontend: Next.js 14
Backend:  Separate API (FastAPI or NestJS)
Database: PostgreSQL (RDS)
Auth:     Custom JWT + Auth.js
Deploy:   Vercel (frontend) + AWS ECS (backend)
Cache:    Redis (ElastiCache)
Queue:    SQS or BullMQ

Why: Separation allows independent scaling, team specialization.

Enterprise Application

Frontend: Next.js or React + Vite
Backend:  NestJS or Go
Database: PostgreSQL (Aurora)
Auth:     Keycloak or Auth0
Deploy:   Kubernetes (EKS/GKE)
Cache:    Redis Cluster
Queue:    Kafka or RabbitMQ
Observability: Datadog or Grafana Stack

Why: Maximum control, compliance requirements, team expertise.

Internal Tool

Frontend: React + Vite + Tailwind
Backend:  Express or FastAPI
Database: PostgreSQL or SQLite
Auth:     OIDC with corporate IdP
Deploy:   Docker on internal infrastructure

Why: Simple, low maintenance, integrates with existing systems.

Quick Decision Guide