Comparison

Fastify vs Spring Boot

No clear leader: Fastify (70.0) and Spring Boot (65.8) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Fastify70
Spring Boot66
Score
vioscaleAI score
Fastify70 / 100high · 78%
Spring Boot66 / 100medium · 51%
Pricing
Free tier
Fastify✓
Spring Boot✓
Model
Fastifycommercial
Spring Bootfreemium
Price level
Fastifyfree
Spring Bootlow
Integrations
Count
Fastify28
Spring Boot–
Reliability
Status page
Fastify–
Spring Boot✓
Adoption
Dependent repos
Fastify16,712
Spring Boot164,184
Github stars
Fastify37,232
Spring Boot81,557
Activity
Commits last 30d
Fastify20
Spring Boot100
Release
Cadence days
Fastify4
Spring Boot–
History
Fastify20 items
Spring Boot20 items
License
Spdx
FastifyMIT
Spring BootApache-2.0
Language
Primary
FastifyJavaScript
Spring BootJava
Content
Faq
Fastify6 items
Spring Boot3 items

Capabilities

Feature-by-feature on the axes that matter for web frameworks. “-” means undocumented, not absent.

Core
Rendering model
Fastify-
Spring Boot-
File-based routing
Fastify✓
Spring Boot-
Language
FastifyJavaScript/TypeScript
Spring BootJava
Rendering
Server components
Fastify-
Spring Boot✓
Streaming SSR
Fastify-
Spring Boot-
Fullstack
Built-in API / backend routes
Fastify✓
Spring Boot✓
DX
First-class TypeScript
Fastify✓
Spring Boot-
Fast refresh / HMR
Fastify-
Spring Boot-
Deployment
Edge runtime support
Fastify-
Spring Boot-

What each one is

The product in its own terms, so the numbers below have context.

Fastify

A Node.js web framework emphasizing fast request handling and low resource consumption while maintaining strong security, input validation, and developer experience.

Independently observed

Spring Boot

Enables developers to create complete server applications quickly using embedded web servers, automatic dependency configuration, and built-in operational features.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Fastify

Open source
as of verify ↗

Spring Boot

HybridFree tier
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Fastify✓
Spring Boot–
CLI
Fastify✓
Spring Boot–
Deployment
Cloud / SaaS
Fastify✓
Spring Boot✗
Self-hosted
Fastify✗
Spring Boot✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Fastify

40 total
  • Next.js
  • Apollo Server
  • Angular
  • PostgreSQL
  • MongoDB
  • Redis
  • Elasticsearch
  • Swagger/OpenAPI
  • WebSocket
  • JWT
  • Helmet
  • Sentry
  • RabbitMQ
  • CORS
  • CSRF
  • OAuth2
  • Kubernetes
  • Firebase
  • Mongoose
  • TypeORM
  • OAuth
  • GraphQL
  • Swagger
  • OpenAPI
  • +16 more
Independently observed

Spring Boot

Not documented yet.

Still deciding?

Fastify or Spring Boot: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.