如何根据应用的报错信息排查问题？

错误名称

状态码

报错信息

处理建议

ResourceExhausted

429

Application concurrent request count exceeded.

• 检查最大实例数是否设置过小，无法满足当前并发量。

• 检查应用是否已被停止。

InternalServerError

500

An internal error has occurred. Please retry.

请联系SAE支持。

AccessDenied

403

The default domain name cannot be accessed unless you manually configure the IP ACL on the console. Your current IP address is not in the IP ACL list. Please add it manually and then access it again, or access it through a custom domain name.

请将当前客户端的出口IP添加到公网访问IP白名单中，详见添加公网访问IP白名单。

SignatureNotMatch

403

The request signature we calculated does not match the signature you provided. Check your access key and signing method.

签名校验不通过。请检查您的签名计算逻辑以及ak或者sk是否准确。

MissingRequiredHeader

403

Required HTTP header Date was not specified.

对于设置了签名认证的应用，请求未携带签名信息，或者在计算签名时没有为请求添加Date头。

ResourceThrottled

400

Reserve resource exceeded limit.

已达到应用或地域级别的实例数量上限，请联系SAE支持。

DomainNameNotFound

404

Domain name 'xxx.com' does not exist.

• 检查请求的域名拼写是否有误。

• 对于自定义域名，检查DNS解析是否有变更。

ClientClosedRequest

499

The request was canceled by the client before it was completed.

客户端在应用没有返回时就主动关闭了请求，建议您增大客户端超时时间或者增大应用的规格。