What are some examples of retry patterns in programming?

Can you explain what retry patterns are in programming?

Retry patterns are strategies used to handle transient failures in applications by attempting an operation again after a failure.

What are some common examples of retry patterns?

Common examples include exponential backoff, fixed interval retries, and circuit breaker patterns.

How does exponential backoff work?

Exponential backoff increases the wait time between retries exponentially, reducing the load on the system.

Can you give me a code example of a retry pattern?

Sure! Here's a simple example in Python using exponential backoff:

import time
import random

def retry_operation(max_retries):
    for attempt in range(max_retries):
        try:
            # Simulate an operation that may fail
            if random.random() < 0.5:
                raise Exception('Transient error')
            print('Operation succeeded!')
            return
        except Exception:
            wait_time = 2 ** attempt
            print(f'Attempt {attempt + 1} failed, retrying in {wait_time} seconds...')
            time.sleep(wait_time)
    print('All attempts failed.')

retry_operation(5)