Uvicorn vs Daphne
Side-by-side — pricing, strengths, tradeoffs, and fit.
Uvicorn
Lightning-fast ASGI server using uvloop and httptools.
Daphne
HTTP and WebSocket protocol server for ASGI applications.
At a glance
Open SourceFree Tier
● Established·From $0
Open SourceFree Tier
● Established·From $0
Overview
One-liner
One-liner
Lightning-fast ASGI server using uvloop and httptools.
One-liner
HTTP and WebSocket protocol server for ASGI applications.
Maturity
Maturity
EstablishedMaturity
EstablishedOpen source
Open source
✓ YesOpen source
✓ YesPricing
Free tier
Free tier
✓ AvailableOpen source — free to use
Free tier
✓ AvailableOpen source — free to use
Starts at
Starts at
$0
Starts at
$0
Model
Model
Flat rate
Model
Flat rate
Enterprise
Enterprise
✕ NoneEnterprise
✕ NoneBest for
✓ Best for
Teams building fast, asynchronous web applications with Python frameworks like FastAPI or Starlette
Developers needing a lightweight ASGI server for rapid development and deployment cycles
Projects requiring high performance and low latency in serving HTTP requests
✓ Best for
Teams deploying Django Channels for real-time communication features in their web apps
Projects requiring a high-performance HTTP2 server with WebSocket support
Development teams looking to leverage ASGI for asynchronous Python applications
Not ideal for
✕ Not for
Applications that require real-time streaming capabilities beyond what ASGI can offer
Teams looking for a full-featured web application framework rather than just an ASGI server
✕ Not for
Developers who need a cloud-hosted solution without self-management responsibilities
Teams preferring a simpler setup process over configuring an ASGI-compatible server
Strengths
↑ Strengths
High performance with uvloop and httptools
Built for ASGI applications
Lightweight and easy to integrate
Supports hot reloading for development
↑ Strengths
Supports HTTP, HTTP2, and WebSocket protocols
Designed for ASGI applications
High-performance asynchronous server
Weaknesses
↓ Weaknesses
Limited to ASGI-compatible applications
Requires a deep understanding of ASGI to troubleshoot issues
Documentation lacks comprehensive examples for complex setups
↓ Weaknesses
Limited language support beyond Python
Complex setup for non-ASGI applications
Documentation lacks depth in advanced use cases
Performance issues with large-scale deployments