Bifrost

A high-performance, low-latency API Gateway library developed in Golang.

Motivation

1. The Lua ecosystem is relatively small, with many third-party packages still lacking features.
2. Ideal for people who are more familiar with Go development than Lua.
3. Integrating existing Go services with the gateway can reduce request latency.
4. Easy to extend with custom features for secondary development.
5. Designed for high performance and low latency.

Features

1. Support for writing middleware in Go.
2. High performance and low latency (powered by the Hertz framework).
3. Millisecond-level hot reloads for route updates without interrupting requests.
4. Built-in Prometheus monitoring.
5. Built-in OpenTelemetry tracing.
6. Supports HTTP1.1/HTTP2/H2C/Webosocket/GRPC protocols.

Comparative Analysis

	Bifrost	Nginx
SDK mode support for custom your gateway	✅	❌
Middleware support	✅	❌
Middleware written in Go	✅	❌
Rich middleware ecosystem	✅	❌
Millisecond-level hot reloads for route updates	✅	❌
Blue-green deployment for services	✅	❌
High connection pool reuse rate	✅	❌
Easy integration with existing Go programs	✅	❌
Built-in Prometheus monitoring	✅	❌
Built-in OpenTelemetry tracing	✅	❌
HTTP2 upstream support	✅	❌
High concurrency and low latency	✅	✅
GRPC Load Balancer	✅	✅
Sticky session	✅	✅
Background task support	✅	✅

Overview

servers: Server configuration, supports middlewares, controlling which port to expose
routes: Route configuration, controls request path forwarding rules to specific services
services: Service configuration, controls service details such as protocol information
upstreams: Upstream configuration, manages load balancing rules for backend hosts

Get Started

Set up a high-performance API gateway in 5 minutes

Documents

1. Configuration
2. Routes
3. Middlewares

Roadmap

1. Cluster management support.

Credit

1. CloudWeGo