ollama - 💡(How to fix) Fix Ollama Cloud: Frequent 503 errors making cloud models unreliable [6 comments, 7 participants]

TL;DR

Implement a more robust retry mechanism with a longer backoff period and consider using a circuit breaker pattern to handle frequent 503 Service Unavailable errors.

Guidance

• Investigate the possibility of rate limiting or capacity issues on the Ollama Cloud side, as the frequent 503 errors could be indicative of one of these problems.
• Consider implementing a circuit breaker pattern to detect when the service is not responding and prevent further requests until it becomes available again.
• Add logging to track the frequency and timing of 503 errors to better understand the issue and identify potential patterns.
• Reach out to the Ollama team to request a status page for Ollama Cloud uptime and more visibility into when and why 503 errors occur.

Example

No specific code example can be provided without more information on the implementation details, but a basic circuit breaker pattern in Python might look like this:

import time
import requests

class CircuitBreaker:
    def __init__(self, timeout, threshold):
        self.timeout = timeout
        self.threshold = threshold
        self.failures = 0
        self.circuit_open = False

    def request(self, url):
        if self.circuit_open:
            if time.time() - self.timeout > self.threshold:
                self.circuit_open = False
            else:
                raise Exception("Circuit open")
        try:
            response = requests.get(url)
            response.raise_for_status()
            self.failures = 0
            return response
        except requests.exceptions.RequestException as e:
            self.failures += 1
            if self.failures >= self.threshold:
                self.circuit_open = True
            raise e

# Usage
breaker = CircuitBreaker(timeout=60, threshold=5)
try:
    response = breaker.request("https://ollama.com:443/model")
except Exception as e:
    print(f"Request failed: {e}")

Notes

The provided guidance is based on the assumption that the 503 errors are due to rate limiting or capacity issues on the Ollama Cloud side. However, without more information from the Ollama team, it's difficult to provide a more specific solution.

Recommendation

Apply a workaround by implementing a more robust retry mechanism and circuit breaker pattern, as the root cause of the issue is unclear and may require changes on the Ollama Cloud side.