# Page Not Found

The URL `files/biio66NkKVtqdgNvpibI` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Design topics](https://design.bea.ai/design-topics.md)
- [Design a Live Video Streaming Platform](https://design.bea.ai/systems/design-a-live-video-streaming-platform.md)
- [Object Interaction / Responsibility](https://design.bea.ai/design-patterns-and-use-scenarios/object-interaction-responsibility.md)
- [Flink](https://design.bea.ai/common-systems-to-use-in-system-design/flink.md)
- [Distributed notification system](https://design.bea.ai/systems-design/distributed-notification-system.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://design.bea.ai/design-topics.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://design.bea.ai/sitemap.md

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

### Option 3 — Retrieve the full documentation corpus

Full export: https://design.bea.ai/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., `/design-topics.md`).

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