RateLimiter

asyncio.run(test_api_calls(5000, rate_limiter)) ``` ### Explanation 1. **RateLimiter Class**: - `__init__`: Initializes the rate limiter with the maximum number of requests and the refill rate. - `wait_for_token`: Refills the token …

1. **Rate Limiter Configuration**: The `RateLimiter` is configured to allow 10 calls per minute. You can adjust these values based on your specific requirements. 2. **Dependency Injection**: The `rate_limit_dependency` function is defined …

log_message('ERROR', f"Authentication error for user {username}", {'error': str(e)}) return None # FastAPI app app = FastAPI() # Rate limiter rate_limiter = RateLimiter(max_calls=10, period=60) # 10 calls per minute # De…

return token except keycloak.exceptions.KeycloakError as e: # Handle authentication errors log_message('ERROR', f"Authentication error for user {username}", {'error': str(e)}) return None # FastAPI app a…

"client_secret": client_secret } # Create a Keycloak instance kc = keycloak.Keycloak(**keycloak_config) # Define a function to handle authentication async def authenticate(username, password): try: # Authenticate the user …

import keycloak import asyncio from aiocache import caches, SimpleMemoryCache from aiocache.serializers import PickleSerializer from ratelimiter import RateLimiter # Initialize Keycloak keycloak_url = "https://my-keycloak-instance.com" rea…

# Cache the token await caches.set(f"token_{username}", token, ttl=3600) # Cache for 1 hour return token except keycloak.exceptions.KeycloakError as e: # Handle authentication errors print(f"Auth…

rate_limiter = RateLimiter(max_calls=100, period=60) # 100 calls per minute # Define a function to handle authentication async def authenticate(username, password): try: # Check cache first token = await caches.get(f"t…

from ratelimiter import RateLimiter import logging # Set up logging logging.basicConfig(level=logging.INFO) logger = logging.getLogger(__name__) # Initialize Keycloak keycloak_url = "https://my-keycloak-instance.com" realm = "my-realm" cl…

- Use `asyncio` and `await` to handle asynchronous requests efficiently. - Ensure that `kc.token_async` is used for asynchronous token retrieval. 2. **Caching**: - Use `aiocache` with Redis to cache tokens. - Check the cache fi…

# Check cache first token = await caches.get(f"token_{username}") if token: return token # Enforce rate limiting with rate_limiter: token = await kc.token_async(userna…

</dependency> ``` For Gradle: ```groovy implementation 'org.springframework.cloud:spring-cloud-starter-gateway' implementation 'org.springframework.boot:spring-boot-starter-actuator' ``` #### 2. Configure Rate Limiting Create a configura…

Implement rate limiting to prevent abuse and ensure that the endpoint can handle 600 req/sec throughput. ```python from fastapi_limiter import FastAPILimiter from fastapi_limiter.depends import RateLimiter @app.on_event("startup") async d…

return JSONResponse(content={"error_code": e.status_code, "message": e.detail}, status_code=e.status_code) try: dense_results = call_dense_retrieval(query) except HTTPException as e: dense_results = {"re…

Here's an example implementation using FastAPI, Redis for caching, and a load balancer: ```python from fastapi import FastAPI, Depends, HTTPException, status from fastapi.security import OAuth2PasswordBearer from pydantic import BaseModel …

raise HTTPException(status_code=response.status_code, detail=str(e)) except requests.exceptions.ConnectionError as e: raise HTTPException(status_code=503, detail=str(e)) except requests.exceptions.Timeout as e: …

Redis can be used to cache frequently accessed data, reducing the load on your backend services and minimizing memory usage. #### Step 1: Install Redis Ensure Redis is installed and running on your server. ```sh sudo apt-get update sudo …

Here's an example implementation using FastAPI: ```python from fastapi import FastAPI, Depends, HTTPException, status from fastapi.security import OAuth2PasswordBearer from pydantic import BaseModel import requests from tenacity import ret…

except requests.exceptions.ConnectionError as e: raise HTTPException(status_code=503, detail=str(e)) except requests.exceptions.Timeout as e: raise HTTPException(status_code=504, detail=str(e)) except Exception a…

#### Existing Flask App Structure ```python from flask import Flask, jsonify, request from flask_limiter import Limiter from flask_limiter.util import get_remote_address from flask_timeout import FlaskTimeout app = Flask(__name__) # Init…

Implement monitoring and profiling tools to track the performance of both the new and existing endpoints. ### 5. **Load Testing** Perform load testing to simulate high traffic scenarios and ensure that the new endpoint does not degrade the…

return jsonify({"error": "Unauthorized access"}), 403 ``` ### 4. Rate Limiting and Throttling Implement rate limiting and throttling to prevent abuse: ```python from flask_limiter import Limiter limiter = Limiter(app, key_func=lambd…

Implement error handling to manage exceptions and return appropriate HTTP status codes. ### Example Implementation ```python from flask import Flask, request, jsonify from flask_limiter import Limiter from flask_limiter.util import get_re…

### Example Implementation Here's an enhanced version of your API endpoint that handles these scenarios: ```python from flask import Flask, request, jsonify from flask_limiter import Limiter from flask_limiter.util import get_remote_addre…