如果您对 API 进行的更改向后兼容现有客户端代码，那么您最好在部署新版本之前增加 API 的次要版本号。虽然 Cloud Endpoints 一次只运行一个 API 次要版本，但 Endpoints > 服务中的图表和日志会显示版本号。如果在部署之前增加次要版本号，则图表和日志便会在部署记录上添加一个标记。
info:description:"A simple Cloud Endpoints API example."title:"Endpoints Example"version:"1.1"host:"echo-api.endpoints.example-project-12345.cloud.goog"basePath:"/v1"
在 openapi-v2.yaml 中配置以下内容：
进行不向后兼容的更改。
将 info.version 字段设置为新版本号。
设置 basePath 字段以包含新的主要版本号。
移除 x-google-endpoints 部分。如果要指定 DNS IP 地址或 allowCors 标志，则需要本部分。使用两个 yaml 配置文件部署两个版本的 API 时，其中只有一个可以具有 x-google-endpoints，但它的配置将应用于两个版本。
例如：
info:description:"A simple Google Cloud Endpoints API example."title:"Endpoints Example"version:"2.0"host:"echo-api.endpoints.example-project-12345.cloud.goog"basePath:"/v2"
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-09-04。"],[[["\u003cp\u003eThis document outlines procedures for updating API versions, differentiating between backwards-compatible and backwards-incompatible changes.\u003c/p\u003e\n"],["\u003cp\u003eFor backwards-compatible changes, it's recommended to increment the minor version number in the \u003ccode\u003einfo.version\u003c/code\u003e field of the \u003ccode\u003eopenapi.yaml\u003c/code\u003e file and then deploy using the Google Cloud CLI.\u003c/p\u003e\n"],["\u003cp\u003eWhen introducing backwards-incompatible changes, it's recommended to increment the major version number and create separate OpenAPI configuration files for each version.\u003c/p\u003e\n"],["\u003cp\u003eTo deploy multiple major versions concurrently, each version should have its own configuration file (e.g., \u003ccode\u003eopenapi-v1.yaml\u003c/code\u003e, \u003ccode\u003eopenapi-v2.yaml\u003c/code\u003e) with distinct \u003ccode\u003ebasePath\u003c/code\u003e values and the \u003ccode\u003ex-google-endpoints\u003c/code\u003e section removed from all but one configuration.\u003c/p\u003e\n"],["\u003cp\u003eAfter the deployment of the API configuration files, a single backend must be deployed that services both versions of the API.\u003c/p\u003e\n"]]],[],null,["# Versioning an API\n\nOpenAPI \\| gRPC\n\n\u003cbr /\u003e\n\nThis page provides detailed configuration and deployment procedures for changing\nthe version number of your API. The procedure that you use depends on whether\nthe changes to your API are backwards compatible.\n\n- If your new API version has backwards-compatible changes, such as adding new fields or methods, see [Backwards-compatible changes](#backwards-compatible).\n- If your new API has changes to an existing method that breaks your customers' client code, see [Backwards-incompatible changes](#backwards-incompatible).\n\nFor additional information and best practices, see\n[API lifecycle management](/endpoints/docs/openapi/lifecycle-management).\n\nBackwards-compatible changes\n----------------------------\n\nWhen you make changes to your API that are backwards compatible with\nexisting client code, as a best practice, increment the minor version number of\nyour API before you deploy the new version. Although Cloud Endpoints runs only\none minor version of an API at a time, the graphs and logs in\n**Endpoints** \\\u003e **Services** display the version number. By incrementing the\nminor version number before you deploy, the graphs and logs provide a labeled\nhistory of your deployments.\n\nTo increment the minor version number:\n\n1. In `openapi.yaml`, increment the minor version number of the\n `info.version` field. For example, if the current version is `1.1`, set\n `info.version` to `1.2`:\n\n info:\n description: \"A simple Cloud Endpoints API example.\"\n title: \"Endpoints Example\"\n version: \"1.2\"\n host: \"echo-api.endpoints.example-project-12345.cloud.goog\"\n\n2. Use the Google Cloud CLI to deploy the API configuration:\n\n gcloud endpoints services deploy openapi.yaml\n\n3. Deploy the API backend by using the configuration ID returned from the\n previous step. For details, see\n [Deploying the API backend](/endpoints/docs/openapi/deploy-api-backend).\n\nBackwards-incompatible changes\n------------------------------\n\nWhen you make changes to your API that breaks your customers' client\ncode, as a best practice, increment the major version number of your API.\nEndpoints can run more than one major version of an API\nconcurrently. By providing both versions of the API, your customers can pick\nwhich version they want to use and control when they migrate to the new version.\n\nTo run the existing and new versions of an API concurrently:\n\n1. Create separate OpenAPI configuration files for each version you need to\n serve. This procedure uses the file names `openapi-v1.yaml` and\n `openapi-v2.yaml` for example purposes.\n\n2. Copy the contents of `openapi-v1.yaml` to `openapi-v2.yaml`.\n\n3. In `openapi-v1.yaml` configure the following:\n\n - Set the `info.version` field to the existing version number.\n - Leave the `basePath` field unchanged.\n\n For example: \n\n info:\n description: \"A simple Cloud Endpoints API example.\"\n title: \"Endpoints Example\"\n version: \"1.1\"\n host: \"echo-api.endpoints.example-project-12345.cloud.goog\"\n basePath: \"/v1\"\n\n4. In `openapi-v2.yaml` configure the following:\n\n - Make backwards-incompatible changes.\n - Set the `info.version` field to the new version number.\n - Set the `basePath` field to include the new major version number.\n - Remove the `x-google-endpoints` section. This section is needed if you want to specify DNS IP address or `allowCors` flag. When deploying two versions of the API with two yaml config files, only one of them can have `x-google-endpoints`, but its config will apply to both versions.\n\n For example: \n\n info:\n description: \"A simple Google Cloud Endpoints API example.\"\n title: \"Endpoints Example\"\n version: \"2.0\"\n host: \"echo-api.endpoints.example-project-12345.cloud.goog\"\n basePath: \"/v2\"\n\n5. Use the Google Cloud CLI to deploy both API configuration files:\n\n gcloud endpoints services deploy openapi-v1.yaml openapi-v2.yaml\n\n | **Note:** Cloud Endpoints internally converts your multiple OpenAPI configuration files into a single configuration, which is identified by one configuration ID.\n6. Deploy a single backend that serves both versions of the API by using the\n configuration ID returned from the previous step. For details, see\n [Deploying the API backend](/endpoints/docs/openapi/deploy-api-backend).\n\nWhat's next\n-----------\n\n- [API lifecycle management](/endpoints/docs/openapi/lifecycle-management)\n- [Planning your Google Cloud projects](/endpoints/docs/openapi/planning-cloud-projects)"]]
