REST API可用性降级

在2026年7月16日UTC时间22:21至23:50期间，REST API经历了显著的服务降级。在此期间，大约39%的REST API请求以HTTP 500级别的响应失败，错误率峰值达到44.3%。<br /><br />我们已确认问题源于一次基础设施变更，该变更错误地将单一区域内的大多数API后端标记为不健康。因此，路由至这些后端的请求在到达应用层之前即告失败。<br /><br />为防止此类问题再次发生，我们正在改进系统，以便在无效配置进入生产环境前将其拦截。我们还将审计相关系统，增强其对未来变更的韧性，并提高监控灵敏度，以便更早地收到此类问题的警报。

原文From 22:21 UTC - 23:50 UTC on July 16, 2026, the REST API experienced significant degradation. During this period, about 39% of REST API requests failed with HTTP 500 level responses, with the errors peaking at 44.3%. <br /><br />We identified the issue as an infrastructure change that wrongly marked the majority of API backends in a single region as unhealthy. As a result, requests routed to those backends failed before reaching the application layer. <br /><br />To prevent this from happening again, we're improving our systems to catch this kind of invalid configuration before it reaches production. We'll also audit the related systems to make them more resilient to future changes, and we're increasing our monitoring sensitivity so we're alerted to problems like this sooner.

自UTC时间23:46起，REST API服务已可访问并正常响应请求。

原文As of 23:46 UTC, the REST API service is reachable and responding to requests normally.

影响API请求的服务降级问题已得到缓解。我们正在持续监控以确保稳定性。

原文The degradation affecting API Requests has been mitigated. We are monitoring to ensure stability.

我们正在继续调查导致约35%的REST API请求失败的问题。根据目前的了解，请求并未稳定到达应用层，导致失败的请求返回HTML响应，而非预期的API响应格式。我们正在积极调查该问题，并将尽快在获得更多信息后提供进一步更新。

原文We are continuing to investigate an issue causing approximately 35% of REST API requests to fail.  Based on our current understanding, requests are not consistently reaching the application layer, resulting in failed requests returning HTML responses instead of the expected API response format. We are actively investigating the issue and will provide another update as soon as more information is available.

API Requests 正经历性能降级。我们正在继续调查。

原文API Requests is experiencing degraded performance. We are continuing to investigate.

我们已知悉REST API可用性下降，正在调查中。

原文We are aware of degraded REST API availability and are investigating

我们正在调查部分GitHub服务性能受影响的相关报告。

原文We are investigating reports of impacted performance for some GitHub services.