数据结构与信息架构

​

​

The most fascinating aspect of Claude Code's data architecture is how it manages the transformation of data through multiple representations while maintaining streaming performance. Let's start with the core innovation:

Claude Code 数据架构最迷人的方面是它如何在保持流式性能的同时，通过多种表示形式管理数据的转换。让我们从核心创新开始：

interface MessageTransformPipeline { cliMessage: { type: "user" | "assistant" | "attachment" | "progress" uuid: string timestamp: string message?: APICompatibleMessage attachment?: AttachmentContent progress?: ProgressUpdate } apiMessage: { role: "user" | "assistant" content: string | ContentBlock[] } streamAccumulator: { partial: Partial<APIMessage> deltas: ContentBlockDelta[] buffers: Map<string, string> } }

接口 MessageTransformPipeline { cliMessage: { type: "user" | "assistant" | "attachment" | "progress" uuid: string timestamp: string message?: APICompatibleMessage attachment?: AttachmentContent progress?: ProgressUpdate } apiMessage: { role: "user" | "assistant" content: string | ContentBlock[] } streamAccumulator: { partial: Partial<APIMessage> deltas: ContentBlockDelta[] buffers: Map<string, string> } }

​

​

Why This Matters: This three-stage representation allows Claude Code to maintain UI responsiveness while handling complex streaming protocols. The CLI can update progress indicators using CliMessage metadata while the actual LLM communication uses a clean APIMessage format.

这很重要：这种三阶段表示允许 Claude Code 在处理复杂的流协议时保持 UI 响应性。CLI 可以使用 CliMessage 元数据更新进度指示器，而实际的 LLM 通信使用干净的 APIMessage 格式。

Based on decompilation analysis, Claude Code implements a sophisticated type system for content:

根据反编译分析，Claude Code 实现了一个复杂的内容类型系统：

type ContentBlock = | TextBlock | ImageBlock | ToolUseBlock | ToolResultBlock | ThinkingBlock | DocumentBlock | VideoBlock | GuardContentBlock | ReasoningBlock | CachePointBlock interface ContentBlockMetrics { TextBlock: { memorySize: "O(text.length)", parseTime: "O(1)", serializeTime: "O(n)", streamable: true }, ImageBlock: { memorySize: "O(1) + external", parseTime: "O(1)", serializeTime: "O(size)" | "O(1) for S3"...