# Page Not Found

The URL `server-to-client-communication` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Server-to-client Communication](https://liuzhenglaichn.gitbook.io/system-design/advanced/server-to-client-communication.md)
- [Redundancy and Replication](https://liuzhenglaichn.gitbook.io/system-design/basics/redundancy-and-replication.md)
- [Design Mint](https://liuzhenglaichn.gitbook.io/system-design/mint/design-mint.md)
- [Design a decentralized web crawler](https://liuzhenglaichn.gitbook.io/system-design/web-crawler/design-a-decentralized-web-crawler.md)
- [Timeline creation with sharded data](https://liuzhenglaichn.gitbook.io/system-design/news-feed/timeline-creation-with-sharded-data.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://liuzhenglaichn.gitbook.io/system-design/advanced/server-to-client-communication.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://liuzhenglaichn.gitbook.io/system-design/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://liuzhenglaichn.gitbook.io/system-design/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/system-design/advanced/server-to-client-communication.md`).

You may also use `Accept: text/markdown` header for content negotiation.