anth-reliability-patterns

# Anthropic Reliability Patterns ## Overview Production reliability patterns for Claude API: circuit breaker (prevent cascading failures), graceful degradation (serve fallbacks), idempotency (safe retries), and timeout management. ## Circuit Breaker ```python import time from enum import Enum class CircuitState(Enum): CLOSED = "closed" # Normal operation OPEN = "open" # Failing, reject requests HALF_OPEN = "half_open" # Testing recovery class ClaudeCircuitBreaker: def __init__(self, failure_threshold: int = 5, recovery_timeout: int = 60): self.state = CircuitState.CLOSED self.failures = 0 self.threshold = failure_threshold self.recovery_timeout = recovery_timeout self.last_failure_time = 0.0 def call(self, func, *args, **kwargs): if self.state == CircuitState.OPEN: if time.time() - self.last_failure_time > self.recovery_timeout: self.state = CircuitState.HALF_OPEN else: raise Exception("Circuit breaker OPEN — Claude API unavailable") try: result = func(*args, **kwargs) if self.state == CircuitState.HALF_OPEN: self.state = CircuitState.CLOSED self.failures = 0 return result except Exception as e: self.failures += 1 self.last_failure_time = time.time() if self.failures >= self.threshold: self.state ...