# 构建并行工作流

现在您将创建一个以最大性能并行运行您分析步骤的工作流。

## 创建并行工作流

将此工作流添加到您的文件中：

```typescript
export const parallelAnalysisWorkflow = createWorkflow({
  id: "parallel-analysis-workflow",
  description: "Run multiple content analyses in parallel",
  inputSchema: z.object({
    content: z.string(),
    type: z.enum(["article", "blog", "social"]).default("article"),
  }),
  outputSchema: z.object({
    results: z.object({
      seo: z.object({
        seoScore: z.number(),
        keywords: z.array(z.string()),
      }),
      readability: z.object({
        readabilityScore: z.number(),
        gradeLevel: z.string(),
      }),
      sentiment: z.object({
        sentiment: z.enum(["positive", "neutral", "negative"]),
        confidence: z.number(),
      }),
    }),
  }),
})
  .parallel([seoAnalysisStep, readabilityStep, sentimentStep])
  .then(
    createStep({
      id: "combine-results",
      description: "Combines parallel analysis results",
      inputSchema: z.object({
        "seo-analysis": z.object({
          seoScore: z.number(),
          keywords: z.array(z.string()),
        }),
        "readability-analysis": z.object({
          readabilityScore: z.number(),
          gradeLevel: z.string(),
        }),
        "sentiment-analysis": z.object({
          sentiment: z.enum(["positive", "neutral", "negative"]),
          confidence: z.number(),
        }),
      }),
      outputSchema: z.object({
        results: z.object({
          seo: z.object({
            seoScore: z.number(),
            keywords: z.array(z.string()),
          }),
          readability: z.object({
            readabilityScore: z.number(),
            gradeLevel: z.string(),
          }),
          sentiment: z.object({
            sentiment: z.enum(["positive", "neutral", "negative"]),
            confidence: z.number(),
          }),
        }),
      }),
      execute: async ({ inputData }) => {
        console.log("🔄 Combining parallel results...");

        return {
          results: {
            seo: inputData["seo-analysis"],
            readability: inputData["readability-analysis"],
            sentiment: inputData["sentiment-analysis"],
          },
        };
      },
    }),
  )
  .commit();
```

## 理解并行数据流

当步骤并行运行时：

1. 每个步骤接收相同的输入数据
2. 步骤同时执行
3. 结果被收集到以步骤ID为键的对象中
4. 下一步接收所有并行结果

## 关键点

- **`.parallel([step1, step2, step3])`**：同时运行所有步骤
- **结果对象键**：使用步骤ID（例如"seo-analysis"）
- **合并步骤**：一起处理所有并行结果

接下来，您将测试此并行工作流并看到性能提升！