熔断

熔断

• Circuit breaker
• 保护调用方
• 应对故障的被动反应机制。
• 避免 级联故障（Cascading Failures）
• Closed -> Open -> Half-Open -> Closed
  • Open/打开 - 阻断请求
• HTTP 5XX
• Java: Resilience4j, Netflix Hystrix (目前已进入维护状态)
• .NET: Polly
• Go: go-circuitbreaker
• https://github.com/netflix/hystrix/wiki/how-it-works
• https://learn.microsoft.com/en-us/azure/architecture/patterns/bulkhead