release: bump version to 0.3.0

- Refactor Redis backend connection handling and pool management
- Update algorithm implementations with improved type annotations
- Enhance config loader validation with stricter Pydantic schemas
- Improve decorator and middleware error handling
- Expand example scripts with better docstrings and usage patterns
- Add new 00_basic_usage.py example for quick start
- Reorganize examples directory structure
- Fix type annotation inconsistencies across core modules
- Update dependencies in pyproject.toml

examples/03_backends.py

@@ -18,6 +18,9 @@ from fastapi_traffic import (
 )
 from fastapi_traffic.core.limiter import set_limiter
 
+DEFAULT_HOST = "127.0.0.1"
+DEFAULT_PORT = 8000
+
 
 # Choose backend based on environment
 def get_backend():
@@ -100,10 +103,26 @@ async def backend_info() -> dict[str, Any]:
 
 
 if __name__ == "__main__":
+    import argparse
+
     import uvicorn
 
+    parser = argparse.ArgumentParser(description="Storage backends example")
+    parser.add_argument(
+        "--host",
+        default=DEFAULT_HOST,
+        help=f"Host to bind to (default: {DEFAULT_HOST})",
+    )
+    parser.add_argument(
+        "--port",
+        type=int,
+        default=DEFAULT_PORT,
+        help=f"Port to bind to (default: {DEFAULT_PORT})",
+    )
+    args = parser.parse_args()
+
     # Run with different backends:
     # RATE_LIMIT_BACKEND=memory python 03_backends.py
     # RATE_LIMIT_BACKEND=sqlite python 03_backends.py
     # RATE_LIMIT_BACKEND=redis REDIS_URL=redis://localhost:6379/0 python 03_backends.py
-    uvicorn.run(app, host="0.0.0.0", port=8000)
+    uvicorn.run(app, host=args.host, port=args.port)