Skip to content

Premier

PyPI version Python Version License

Premier is a versatile Python toolkit that can be used in three main ways:

  1. Lightweight Standalone API Gateway - Run as a dedicated gateway service
  2. ASGI App/Middleware - Wrap existing ASGI applications or add as middleware
  3. Decorator Mode - Use Premier decorators directly on functions for maximum flexibility

Premier transforms any Python web application into a full-featured API gateway with caching, rate limiting, retry logic, timeouts, and performance monitoring.

Premier comes with a nice dashboard for you to monitor your requests

Premier Dashboard

Features

Premier provides enterprise-grade API gateway functionality with:

  • API Gateway Features - caching, rate limiting, retry logic, and timeout, etc.
  • Path-Based Policies - Different features per route with regex matching
  • Load Balancing & Circuit Breaker - Round robin load balancing with fault tolerance
  • WebSocket Support - Full WebSocket proxying with rate limiting and monitoring
  • Web Dashboard - Built-in web GUI for monitoring and configuration management
  • YAML Configuration - Declarative configuration with namespace support

... and more

Why Premier

Premier is designed for simplicity and accessibility - perfect for simple applications that need API gateway functionality without introducing complex tech stacks like Kong, Ambassador, or Istio.

Key advantages:

  • Zero Code Changes - Wrap existing ASGI apps without modifications
  • Simple Setup - Single dependency, no external services required
  • Dual Mode Operation - Plugin for existing apps OR standalone gateway
  • Python Native - Built for Python developers, integrates seamlessly
  • Lightweight - Minimal overhead, maximum performance
  • Hot Reloadable - Update configurations without restarts

Quick Start

How it works: Each app instance has its own Premier gateway wrapper

┌─────────────────────────────────────────────────────────────┐
│ App Instance 1                                              │
│ ┌─────────────────┐    ┌─────────────────────────────────┐  │
│ │   Premier       │────│       Your ASGI App             │  │
│ │   Gateway       │    │     (FastAPI/Django/etc)        │  │
│ │  ┌──────────┐   │    │                                 │  │
│ │  │Cache     │   │    │  @app.get("/api/users")         │  │
│ │  │RateLimit │   │    │  async def get_users():         │  │
│ │  │Retry     │   │    │      return users               │  │
│ │  │Timeout   │   │    │                                 │  │
│ │  └──────────┘   │    │                                 │  │
│ └─────────────────┘    └─────────────────────────────────┘  │
└─────────────────────────────────────────────────────────────┘

You can keep your existing app.py file untouched

# app.py
from premier.asgi import ASGIGateway, GatewayConfig
from fastapi import FastAPI

# Your existing app - no changes needed
app = FastAPI()

@app.get("/api/users/{user_id}")
async def get_user(user_id: int):
    return await fetch_user_from_database(user_id)

Next, import your app instance and wrap it with ASGIGateway:

# gateway.py
from .app import app
# Load configuration and wrap app
config = GatewayConfig.from_file("gateway.yaml")
app = ASGIGateway(config=config, app=app)

Then, instead of serving the original app directly, serve the one wrapped with ASGIGateway.

Standalone Mode

How it works: Single gateway handles all requests and forwards to backend services

                        ┌─────────────────────┐
    Client Request      │   Premier Gateway   │
         │              │  ┌──────────────┐   │
         │              │  │ Cache        │   │
         └──────────────►  │ RateLimit    │   │
                        │  │ Retry        │   │
                        │  │ Timeout      │   │
                        │  │ Monitoring   │   │
                        │  └──────────────┘   │
                        └─────┬──────┬────────┘
                              │      │
                    ┌─────────┘      └─────────┐
                    ▼                          ▼
            ┌───────────────┐          ┌───────────────┐
            │   Backend 1   │          │   Backend 2   │
            │ (Any Service) │          │ (Any Service) │
            │               │          │               │
            │ Node.js API   │          │  Python API   │
            │ Java Service  │          │  .NET Service │
            │ Static Files  │          │  Database     │
            └───────────────┘          └───────────────┘

# main.py
from premier.asgi import ASGIGateway, GatewayConfig

config = GatewayConfig.from_file("gateway.yaml")
gateway = ASGIGateway(config, servers=["http://backend:8000"])

uvicorn src:main

Decorator Mode

How it works: Apply Premier features directly to individual functions with decorators - no ASGI app required

For detailed examples and tutorials, see the Examples page.

Requirements

  • Python >= 3.10
  • Redis >= 5.0.3 (optional, for distributed deployments)
  • PyYAML (for YAML configuration)
  • aiohttp (optional, for standalone mode)

Next Steps

License

MIT License