Elysia
Ergonomic framework for Bun. End-to-end type safety with TypeBox integration.
VS
Fastify
Fast and low overhead web framework, focused on providing the best developer experience.
Quick Comparison
| Feature | Elysia | Fastify |
|---|---|---|
| Type | Micro-framework | Micro-framework |
| Performance | Excellent | Very High |
| Type Safety | Full End-to-End | Standard TypeScript |
| Ecosystem | Growing | Growing |
Feature Comparison by Category
Libraries
Elysia: 2 snippets | Fastify: 3 snippets
Middleware
Elysia: 7 snippets | Fastify: 8 snippets
Utilities
Elysia: 6 snippets | Fastify: 3 snippets
Frequently Asked Questions
Which framework is faster, Elysia or Fastify?
Elysia generally has better raw performance benchmarks, but actual performance depends on your use case and workload.
Is Elysia compatible with Fastify middleware?
No, each framework has its own middleware system. However, many concepts translate between frameworks.
Which framework should I choose for my project?
Choose Elysia if you prioritize performance. Choose Fastify if you prioritize performance.
Can I migrate from Elysia to Fastify?
Migration is possible but requires significant effort due to different APIs and patterns. Consider using an abstraction layer if you anticipate needing to switch.