api-changelog-versioning

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API Changelog & Versioning

API变更日志与版本控制

Overview

概述

Create comprehensive API changelogs that document changes, deprecations, breaking changes, and provide migration guides for API consumers.

创建全面的API变更日志，记录变更、弃用项、破坏性变更，并为API使用者提供迁移指南。

When to Use

适用场景

API version changelogs
Breaking changes documentation
Migration guides between versions
Deprecation notices
API upgrade guides
Backward compatibility notes
Version comparison

API版本变更日志
破坏性变更文档
版本间迁移指南
弃用通知
API升级指南
向后兼容性说明
版本对比

API Changelog Template

API变更日志模板

markdown

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markdown

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API Changelog

Version 3.0.0 - 2025-01-15

🚨 Breaking Changes

🚨 破坏性变更

Authentication Method Changed

认证方式变更

Previous (v2):

http

GET /api/users
Authorization: Token abc123

Current (v3):

http

GET /api/v3/users
Authorization: Bearer eyJhbGciOiJIUzI1NiIs...

Impact: All API consumers must switch from API tokens to JWT Bearer tokens

Migration Steps:

Obtain JWT token from
```
/api/v3/auth/login
```
endpoint

Replace

Authorization: Token

with

Authorization: Bearer

Update token refresh logic (JWT tokens expire after 1 hour)

Migration Deadline: June 1, 2025 (v2 auth will be deprecated)

Migration Guide: JWT Authentication Guide

旧版本（v2）：

http

GET /api/users
Authorization: Token abc123

当前版本（v3）：

http

GET /api/v3/users
Authorization: Bearer eyJhbGciOiJIUzI1NiIs...

影响： 所有API使用者必须从API令牌切换为JWT Bearer令牌

迁移步骤：

从
```
/api/v3/auth/login
```
端点获取JWT令牌

将

Authorization: Token

替换为

Authorization: Bearer

更新令牌刷新逻辑（JWT令牌1小时后过期）

迁移截止日期： 2025年6月1日（v2认证将被弃用）

迁移指南： JWT认证指南

Response Format Changed

响应格式变更

Previous (v2):

json

{
  "id": "123",
  "name": "John Doe",
  "email": "john@example.com"
}

Current (v3):

json

{
  "data": {
    "id": "123",
    "type": "user",
    "attributes": {
      "name": "John Doe",
      "email": "john@example.com"
    }
  }
}

Impact: All API responses now follow JSON:API specification

Migration:

javascript

// Before (v2)
const user = await response.json();
console.log(user.name);

// After (v3)
const { data } = await response.json();
console.log(data.attributes.name);

// Or use our SDK which handles this automatically
import { ApiClient } from '@company/api-sdk';
const user = await client.users.get('123');
console.log(user.name); // SDK unwraps the response

旧版本（v2）：

json

{
  "id": "123",
  "name": "John Doe",
  "email": "john@example.com"
}

当前版本（v3）：

json

{
  "data": {
    "id": "123",
    "type": "user",
    "attributes": {
      "name": "John Doe",
      "email": "john@example.com"
    }
  }
}

影响： 所有API响应现在遵循JSON:API规范

迁移代码示例：

javascript

// 旧版本（v2）
const user = await response.json();
console.log(user.name);

// 当前版本（v3）
const { data } = await response.json();
console.log(data.attributes.name);

// 或使用我们的SDK自动处理
import { ApiClient } from '@company/api-sdk';
const user = await client.users.get('123');
console.log(user.name); // SDK会自动解析响应

Removed Endpoints

已移除的端点

Removed Endpoint	Replacement	Notes
`GET /api/users/list`	`GET /api/v3/users`	Use pagination parameters
`POST /api/users/create`	`POST /api/v3/users`	RESTful convention
`GET /api/search`	`GET /api/v3/search`	Now supports advanced filters

已移除端点	替代方案	说明
`GET /api/users/list`	`GET /api/v3/users`	使用分页参数
`POST /api/users/create`	`POST /api/v3/users`	遵循RESTful规范
`GET /api/search`	`GET /api/v3/search`	现在支持高级筛选

✨ New Features

✨ 新功能

Webhook Support

Webhook支持

Subscribe to real-time events:

http

POST /api/v3/webhooks
Content-Type: application/json

{
  "url": "https://your-app.com/webhook",
  "events": ["user.created", "user.updated", "user.deleted"],
  "secret": "your-webhook-secret"
}

Webhook Payload:

json

{
  "event": "user.created",
  "timestamp": "2025-01-15T14:30:00Z",
  "data": {
    "id": "123",
    "type": "user",
    "attributes": {
      "name": "John Doe",
      "email": "john@example.com"
    }
  }
}

Documentation: Webhook Guide

订阅实时事件：

http

POST /api/v3/webhooks
Content-Type: application/json

{
  "url": "https://your-app.com/webhook",
  "events": ["user.created", "user.updated", "user.deleted"],
  "secret": "your-webhook-secret"
}

Webhook负载：

json

{
  "event": "user.created",
  "timestamp": "2025-01-15T14:30:00Z",
  "data": {
    "id": "123",
    "type": "user",
    "attributes": {
      "name": "John Doe",
      "email": "john@example.com"
    }
  }
}

文档： Webhook指南

Batch Operations

批量操作

Process multiple records in a single request:

http

POST /api/v3/users/batch
Content-Type: application/json

{
  "operations": [
    {
      "method": "POST",
      "path": "/users",
      "body": { "name": "User 1", "email": "user1@example.com" }
    },
    {
      "method": "PATCH",
      "path": "/users/123",
      "body": { "name": "Updated Name" }
    },
    {
      "method": "DELETE",
      "path": "/users/456"
    }
  ]
}

Response:

json

{
  "results": [
    { "status": 201, "data": { "id": "789", ... } },
    { "status": 200, "data": { "id": "123", ... } },
    { "status": 204 }
  ]
}

Limits: Maximum 100 operations per batch request

在单个请求中处理多条记录：

http

POST /api/v3/users/batch
Content-Type: application/json

{
  "operations": [
    {
      "method": "POST",
      "path": "/users",
      "body": { "name": "User 1", "email": "user1@example.com" }
    },
    {
      "method": "PATCH",
      "path": "/users/123",
      "body": { "name": "Updated Name" }
    },
    {
      "method": "DELETE",
      "path": "/users/456"
    }
  ]
}

响应：

json

{
  "results": [
    { "status": 201, "data": { "id": "789", ... } },
    { "status": 200, "data": { "id": "123", ... } },
    { "status": 204 }
  ]
}

限制： 每个批量请求最多支持100次操作

Field Filtering

字段筛选

Request only the fields you need:

http

GET /api/v3/users/123?fields=id,name,email

Before (full response):

json

{
  "data": {
    "id": "123",
    "type": "user",
    "attributes": {
      "name": "John Doe",
      "email": "john@example.com",
      "phone": "+1234567890",
      "address": { "street": "123 Main St", "city": "NYC" },
      "preferences": { /* ... */ },
      "metadata": { /* ... */ }
      // ... many more fields
    }
  }
}

After (filtered response):

json

{
  "data": {
    "id": "123",
    "type": "user",
    "attributes": {
      "name": "John Doe",
      "email": "john@example.com"
    }
  }
}

Benefits:

Reduced response size (up to 80% smaller)
Faster response times
Lower bandwidth usage

仅请求所需字段：

http

GET /api/v3/users/123?fields=id,name,email

旧版本（完整响应）：

json

{
  "data": {
    "id": "123",
    "type": "user",
    "attributes": {
      "name": "John Doe",
      "email": "john@example.com",
      "phone": "+1234567890",
      "address": { "street": "123 Main St", "city": "NYC" },
      "preferences": { /* ... */ },
      "metadata": { /* ... */ }
      // ... 更多字段
    }
  }
}

当前版本（筛选后响应）：

json

{
  "data": {
    "id": "123",
    "type": "user",
    "attributes": {
      "name": "John Doe",
      "email": "john@example.com"
    }
  }
}

优势：

减小响应体积（最多可缩小80%）
提升响应速度
降低带宽消耗

🔧 Improvements

🔧 优化改进

Performance Enhancements

性能提升

50% faster response times for list endpoints
Database query optimization reducing average query time from 150ms to 50ms
Caching layer added for frequently accessed resources
CDN integration for static assets

Benchmark Comparison:

Endpoint	v2 (avg)	v3 (avg)	Improvement
GET /users	320ms	140ms	56% faster
GET /users/{id}	180ms	60ms	67% faster
POST /users	250ms	120ms	52% faster

列表端点响应速度提升50%
数据库查询优化，平均查询时间从150ms缩短至50ms
为频繁访问的资源添加缓存层
集成CDN处理静态资源

基准对比：

端点	v2（平均）	v3（平均）	提升幅度
GET /users	320ms	140ms	快56%
GET /users/{id}	180ms	60ms	快67%
POST /users	250ms	120ms	快52%

Better Error Messages

更友好的错误提示

Before (v2):

json

{
  "error": "Validation failed"
}

After (v3):

json

{
  "errors": [
    {
      "code": "VALIDATION_ERROR",
      "field": "email",
      "message": "Email format is invalid",
      "suggestion": "Use format: user@example.com"
    },
    {
      "code": "VALIDATION_ERROR",
      "field": "password",
      "message": "Password too weak",
      "suggestion": "Password must be at least 8 characters with uppercase, lowercase, and numbers"
    }
  ]
}

旧版本（v2）：

json

{
  "error": "Validation failed"
}

当前版本（v3）：

json

{
  "errors": [
    {
      "code": "VALIDATION_ERROR",
      "field": "email",
      "message": "Email format is invalid",
      "suggestion": "Use format: user@example.com"
    },
    {
      "code": "VALIDATION_ERROR",
      "field": "password",
      "message": "Password too weak",
      "suggestion": "Password must be at least 8 characters with uppercase, lowercase, and numbers"
    }
  ]
}

Enhanced Rate Limiting

增强的速率限制

New rate limit headers in every response:

http

HTTP/1.1 200 OK
X-RateLimit-Limit: 1000
X-RateLimit-Remaining: 950
X-RateLimit-Reset: 1642694400
X-RateLimit-Window: 3600
Retry-After: 3600

Rate Limits by Plan:

Plan	Requests/Hour	Burst	Reset
Free	100	10/min	1 hour
Pro	1,000	50/min	1 hour
Enterprise	10,000	200/min	1 hour

每个响应中都会包含新的速率限制头：

http

HTTP/1.1 200 OK
X-RateLimit-Limit: 1000
X-RateLimit-Remaining: 950
X-RateLimit-Reset: 1642694400
X-RateLimit-Window: 3600
Retry-After: 3600

按套餐划分的速率限制：

套餐	每小时请求数	突发请求数	重置周期
免费版	100	10次/分钟	1小时
专业版	1,000	50次/分钟	1小时
企业版	10,000	200次/分钟	1小时

🔒 Security

🔒 安全增强

TLS 1.3 Required: Dropped support for TLS 1.2
JWT Expiry: Tokens now expire after 1 hour (was 24 hours)
Rate Limiting: Stricter limits on authentication endpoints
CORS: Updated allowed origins (see security policy)
Input Validation: Enhanced validation on all endpoints

要求使用TLS 1.3：不再支持TLS 1.2
JWT令牌有效期：从24小时缩短至1小时
认证端点的速率限制更严格
CORS：更新了允许的源（请查看安全策略）
输入验证：增强了所有端点的输入验证

🗑️ Deprecated

🗑️ 已弃用功能

Deprecation Schedule

弃用时间表

Feature	Deprecated	Removal Date	Replacement
API Token Auth	v3.0.0	2025-06-01	JWT Bearer tokens
XML Response Format	v3.0.0	2025-04-01	JSON only
`/api/v1/*` endpoints	v3.0.0	2025-03-01	`/api/v3/*`
Query param `filter`	v3.0.0	2025-05-01	Use `filters[field]=value`

Deprecation Warnings:

All deprecated features return a warning header:

http

HTTP/1.1 200 OK
Deprecation: true
Sunset: Sat, 01 Jun 2025 00:00:00 GMT
Link: <https://docs.example.com/migration/v2-to-v3>; rel="deprecation"

功能	弃用版本	移除日期	替代方案
API令牌认证	v3.0.0	2025-06-01	JWT Bearer令牌
XML响应格式	v3.0.0	2025-04-01	仅支持JSON
`/api/v1/*` 端点	v3.0.0	2025-03-01	`/api/v3/*`
查询参数 `filter`	v3.0.0	2025-05-01	使用 `filters[field]=value`

弃用警告：

所有已弃用功能都会返回警告头：

http

HTTP/1.1 200 OK
Deprecation: true
Sunset: Sat, 01 Jun 2025 00:00:00 GMT
Link: <https://docs.example.com/migration/v2-to-v3>; rel="deprecation"

📊 Version Support Policy

📊 版本支持政策

Version	Status	Release Date	End of Support
v3.x	Current	2025-01-15	TBD
v2.x	Maintenance	2024-01-01	2025-07-01
v1.x	End of Life	2023-01-01	2024-12-31

Support Levels:

Current: Full support, new features
Maintenance: Bug fixes and security patches only
End of Life: No support, upgrade required

版本	状态	发布日期	支持结束日期
v3.x	当前版本	2025-01-15	待定
v2.x	维护阶段	2024-01-01	2025-07-01
v1.x	停止支持	2023-01-01	2024-12-31

支持级别：

当前版本： 全面支持，会新增功能
维护阶段： 仅修复Bug和安全漏洞
停止支持： 不再提供任何支持，必须升级

Migration Guide: v2 → v3

迁移指南：v2 → v3

Step 1: Update Base URL

步骤1：更新基础URL

javascript

// Before
const API_BASE = 'https://api.example.com/api';

// After
const API_BASE = 'https://api.example.com/api/v3';

javascript

// 旧版本
const API_BASE = 'https://api.example.com/api';

// 当前版本
const API_BASE = 'https://api.example.com/api/v3';

Step 2: Migrate Authentication

步骤2：迁移认证方式

javascript

// Before (v2) - API Token
const response = await fetch(`${API_BASE}/users`, {
  headers: {
    'Authorization': `Token ${apiToken}`
  }
});

// After (v3) - JWT Bearer
const tokenResponse = await fetch(`${API_BASE}/auth/login`, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ email, password })
});
const { token } = await tokenResponse.json();

const response = await fetch(`${API_BASE}/users`, {
  headers: {
    'Authorization': `Bearer ${token}`
  }
});

javascript

// 旧版本（v2）- API令牌
const response = await fetch(`${API_BASE}/users`, {
  headers: {
    'Authorization': `Token ${apiToken}`
  }
});

// 当前版本（v3）- JWT Bearer
const tokenResponse = await fetch(`${API_BASE}/auth/login`, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ email, password })
});
const { token } = await tokenResponse.json();

const response = await fetch(`${API_BASE}/users`, {
  headers: {
    'Authorization': `Bearer ${token}`
  }
});

Step 3: Update Response Parsing

步骤3：更新响应解析逻辑

javascript

// Before (v2)
const user = await response.json();
console.log(user.name);

// After (v3) - Unwrap data object
const { data } = await response.json();
console.log(data.attributes.name);

// Or use SDK
import { ApiClient } from '@company/api-sdk';
const client = new ApiClient(token);
const user = await client.users.get('123');
console.log(user.name); // SDK handles unwrapping

javascript

// 旧版本（v2）
const user = await response.json();
console.log(user.name);

// 当前版本（v3）- 解析data对象
const { data } = await response.json();
console.log(data.attributes.name);

// 或使用SDK
import { ApiClient } from '@company/api-sdk';
const client = new ApiClient(token);
const user = await client.users.get('123');
console.log(user.name); // SDK会自动处理解析

Step 4: Update Error Handling

步骤4：更新错误处理

javascript

// Before (v2)
try {
  const response = await fetch(`${API_BASE}/users`);
  if (!response.ok) {
    const error = await response.json();
    console.error(error.error);
  }
} catch (error) {
  console.error(error);
}

// After (v3) - Handle multiple errors
try {
  const response = await fetch(`${API_BASE}/users`);
  if (!response.ok) {
    const { errors } = await response.json();
    errors.forEach(err => {
      console.error(`${err.field}: ${err.message}`);
      console.log(`Suggestion: ${err.suggestion}`);
    });
  }
} catch (error) {
  console.error(error);
}

javascript

// 旧版本（v2）
try {
  const response = await fetch(`${API_BASE}/users`);
  if (!response.ok) {
    const error = await response.json();
    console.error(error.error);
  }
} catch (error) {
  console.error(error);
}

// 当前版本（v3）- 处理多个错误
try {
  const response = await fetch(`${API_BASE}/users`);
  if (!response.ok) {
    const { errors } = await response.json();
    errors.forEach(err => {
      console.error(`${err.field}: ${err.message}`);
      console.log(`建议：${err.suggestion}`);
    });
  }
} catch (error) {
  console.error(error);
}

Step 5: Update Pagination

步骤5：更新分页逻辑

javascript

// Before (v2)
const response = await fetch(`${API_BASE}/users?page=1&per_page=20`);

// After (v3)
const response = await fetch(`${API_BASE}/users?page[number]=1&page[size]=20`);

// Response structure
{
  "data": [...],
  "meta": {
    "page": {
      "current": 1,
      "size": 20,
      "total": 150,
      "totalPages": 8
    }
  },
  "links": {
    "first": "/api/v3/users?page[number]=1",
    "last": "/api/v3/users?page[number]=8",
    "next": "/api/v3/users?page[number]=2",
    "prev": null
  }
}

javascript

// 旧版本（v2）
const response = await fetch(`${API_BASE}/users?page=1&per_page=20`);

// 当前版本（v3）
const response = await fetch(`${API_BASE}/users?page[number]=1&page[size]=20`);

// 响应结构
{
  "data": [...],
  "meta": {
    "page": {
      "current": 1,
      "size": 20,
      "total": 150,
      "totalPages": 8
    }
  },
  "links": {
    "first": "/api/v3/users?page[number]=1",
    "last": "/api/v3/users?page[number]=8",
    "next": "/api/v3/users?page[number]=2",
    "prev": null
  }
}

Step 6: Testing

步骤6：测试

javascript

// Run tests against v3 API
npm run test:api -- --api-version=v3

// Test migration gradually
const USE_V3 = process.env.USE_API_V3 === 'true';
const API_BASE = USE_V3
  ? 'https://api.example.com/api/v3'
  : 'https://api.example.com/api/v2';

javascript

// 针对v3 API运行测试
npm run test:api -- --api-version=v3

// 逐步测试迁移
const USE_V3 = process.env.USE_API_V3 === 'true';
const API_BASE = USE_V3
  ? 'https://api.example.com/api/v3'
  : 'https://api.example.com/api/v2';

Version Comparison

版本对比

Feature Matrix

功能矩阵

Feature	v1	v2	v3
REST API	✅	✅	✅
GraphQL	❌	❌	✅
Webhooks	❌	❌	✅
Batch Operations	❌	❌	✅
Field Filtering	❌	✅	✅
JSON:API Format	❌	❌	✅
JWT Auth	❌	✅	✅
API Token Auth	✅	✅	⚠️ Deprecated
XML Responses	✅	⚠️ Deprecated	❌

Legend: ✅ Supported | ❌ Not Available | ⚠️ Deprecated

功能	v1	v2	v3
REST API	✅ 支持	✅ 支持	✅ 支持
GraphQL	❌ 不支持	❌ 不支持	✅ 支持
Webhooks	❌ 不支持	❌ 不支持	✅ 支持
批量操作	❌ 不支持	❌ 不支持	✅ 支持
字段筛选	❌ 不支持	✅ 支持	✅ 支持
JSON:API格式	❌ 不支持	❌ 不支持	✅ 支持
JWT认证	❌ 不支持	✅ 支持	✅ 支持
API令牌认证	✅ 支持	✅ 支持	⚠️ 已弃用
XML响应	✅ 支持	⚠️ 已弃用	❌ 不支持

图例：✅ 支持 | ❌ 不支持 | ⚠️ 已弃用

SDK Updates

SDK更新

Update to the latest SDK version:

bash

undefined

升级到最新版本的SDK：

bash

undefined

JavaScript/TypeScript

npm install @company/api-sdk@^3.0.0

Python

pip install company-api-sdk>=3.0.0

Ruby

gem install company-api-sdk -v '~> 3.0'

Go

go get github.com/company/api-sdk/v3


**SDK Changelog:** [SDK Releases](https://github.com/company/api-sdk/releases)

---

go get github.com/company/api-sdk/v3


**SDK变更日志：** [SDK版本发布记录](https://github.com/company/api-sdk/releases)

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Support & Resources

支持与资源

Migration Support: migration@example.com
Documentation: https://docs.example.com/v3
API Status: https://status.example.com
Community Forum: https://community.example.com
GitHub Issues: https://github.com/company/api/issues

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迁移支持： migration@example.com
文档： https://docs.example.com/v3
API状态： https://status.example.com
社区论坛： https://community.example.com
GitHub问题反馈： https://github.com/company/api/issues

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Best Practices

最佳实践

✅ DO

✅ 建议做法

Clearly mark breaking changes
Provide migration guides with code examples
Include before/after comparisons
Document deprecation timelines
Show impact on existing implementations
Provide SDKs for major versions
Use semantic versioning
Give advance notice (3-6 months)
Maintain backward compatibility when possible
Document version support policy

清晰标记破坏性变更
提供包含代码示例的迁移指南
包含新旧版本对比
记录弃用时间线
说明对现有实现的影响
为主要版本提供SDK
使用语义化版本控制
提前通知（3-6个月）
尽可能保持向后兼容性
记录版本支持政策

❌ DON'T

❌ 避免做法

Make breaking changes without notice
Remove endpoints without deprecation period
Skip migration examples
Forget to version your API
Change behavior without documentation
Rush deprecations

未提前通知就进行破坏性变更
没有弃用周期就移除端点
省略迁移示例
不对API进行版本控制
变更行为但不更新文档
仓促推进弃用流程