API Retry Patterns

Retry and Resilience

from tenacity import retry, stop_after_attempt, wait_exponential
import httpx, time

@retry(stop=stop_after_attempt(3),
       wait=wait_exponential(multiplier=1,min=1,max=10))
def call_api(url: str) -> dict:
    response = httpx.get(url, timeout=5.0)
    response.raise_for_status()
    return response.json()

# Manual retry with Retry-After
def resilient_get(url, max_retries=3):
    for i in range(max_retries):
        resp = httpx.get(url, timeout=5.0)
        if resp.status_code == 429:
            time.sleep(int(resp.headers.get("Retry-After",60)))
            continue
        resp.raise_for_status()
        return resp.json()
        
# Always use jitter to avoid thundering herd