GraphQL vs REST: When GraphQL Is Worth the Complexity
GraphQL solves specific problems. For most applications, REST is simpler. Here's how to know which one your project needs.
What GraphQL Solves
Over-fetching: REST returns entire objects; you need 2 fields.
Under-fetching: Loading a dashboard requires 7 REST calls; GraphQL fetches it in one query.
Multiple clients: Mobile app needs less data than web; GraphQL lets each client request exactly what it needs.
When REST Wins
- Simple CRUD operations
- Small team with one client
- Caching is important (REST caches easily, GraphQL doesn't)
- File uploads (GraphQL handles these awkwardly)
- Fast iteration (REST is less ceremony)
When GraphQL Wins
- Multiple clients (web, mobile, TV) with different data needs
- Complex nested data relationships
- Frequent frontend changes (no backend deploys for new queries)
- Public APIs (developers get what they need, not what you designed)
GraphQL with Pothos + Prisma
npm install @pothos/core @pothos/plugin-prisma graphql
// schema.ts
import SchemaBuilder from '@pothos/core';
import PrismaPlugin from '@pothos/plugin-prisma';
const builder = new SchemaBuilder({
plugins: [PrismaPlugin],
prisma: { client: prisma },
});
builder.prismaObject('User', {
fields: (t) => ({
id: t.exposeID('id'),
email: t.exposeString('email'),
name: t.exposeString('name'),
posts: t.relation('posts'),
}),
});
builder.queryType({
fields: (t) => ({
user: t.prismaField({
type: 'User',
args: { id: t.arg.string({ required: true }) },
resolve: (query, root, args) =>
prisma.user.findUnique({ ...query, where: { id: args.id } }),
}),
}),
});
export const schema = builder.toSchema();
Client Query
// Request exactly the fields you need
const USER_QUERY = gql`
query GetUser($id: String!) {
user(id: $id) {
name
email
posts {
title
createdAt
}
}
}
`;
const { data } = useQuery(USER_QUERY, { variables: { id: userId } });
// data.user has exactly { name, email, posts } — nothing more
N+1 Problem and DataLoader
// Without DataLoader: fetches author separately for each post
// 100 posts = 101 database queries
// With DataLoader: batches all author fetches into one query
import DataLoader from 'dataloader';
const userLoader = new DataLoader(async (ids: readonly string[]) => {
const users = await prisma.user.findMany({ where: { id: { in: [...ids] } } });
return ids.map(id => users.find(u => u.id === id));
});
tRPC as Middle Ground
For TypeScript full-stack apps, tRPC gives you GraphQL-like type safety without the GraphQL schema overhead. Both tRPC and GraphQL ship as options in the AI SaaS Starter Kit. $99 at whoffagents.com.
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