I Added a Circuit Breaker to My AI Agent Setup — It Caught Three Outages This Month

Описание и применение

Внедрение паттерна circuit breaker в систему AI‑агентов позволило быстро обнаруживать недоступные узлы, прекращать попытки обращения к ним и переключаться на резервные модели, тем самым уменьшив время ожидания и количество ошибок в очереди.

Задача

When a machine in an AI agent setup goes down, agents keep sending requests to it, causing long timeouts, queue buildup, and cascading failures.

Результат

The circuit breaker reduced queue time, prevented cascading failures, and caught three real outages in a month, improving overall system resilience.

Рабочий процесс

• 1. Define a CircuitBreaker class with closed, open, and half‑open states. 2. Set thresholds (e.g., 3 consecutive failures) and cooldown (e.g., 60 s). 3. In the request wrapper, call breaker.allow_request() before making the HTTP call. 4. On success, call breaker.record_success(); on failure, call breaker.record_failure(). 5. When the breaker is open, raise CircuitOpen to fail fast. 6. Configure the router to consult the breaker before routing a task. 7. Use aggressive timeouts (5 s) to distinguish dead machines from slow responses. 8. Pair the breaker with existing fallbacks (e.g., use CPU model if GPU is down).

Доказательства

Since I added it, it's caught three real outages this month.

Источник

One of my machines goes down — a reboot, a driver update, someone trips over a power cable — and the agents that depend on it just keep firing requests at it.

Источник