Long running streaming (more than 10 minute)

[sertacakdogan]

I have a use case that I need extensive streaming to sustain UX experience on the app. But Agent Engine has 10 minute Sse streaming limit.

How to turnaround?

[adk-bot]

Response from ADK Answering Agent (experimental, answer may be inaccurate)

TLDR: To handle long-running streaming beyond the 10-minute limit, you can leverage ADK's built-in session resumption feature. This allows clients to reconnect to an interrupted stream and continue the conversation seamlessly.

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Hello! The 10-minute limit you're encountering is a common timeout for long-lived connections to prevent them from hanging indefinitely.

The recommended approach to handle this in ADK is to use the session resumption capability. [1] This feature is designed to make streaming conversations more reliable, especially for long-running scenarios or over unreliable network connections. When enabled, the Agent Engine preserves the session state, allowing a client to reconnect and resume the conversation from where it left off.

To enable this feature, you need to set session_resumption to True in the RunConfig when you start your agent, like this:

from adk.agent import run
from adk.config import RunConfig

# ... your agent definition ...

if __name__ == "__main__":
    run(
        run_config=RunConfig(
            session_resumption=True
        )
    )

On your client application, you would then need to implement logic to automatically re-establish the Server-Sent Events (SSE) connection if it's dropped. When the client reconnects to the same session, ADK will automatically resume the stream.

This combination of client-side reconnection and server-side session resumption is the standard way to build robust, long-running streaming experiences with ADK.

[1] https://google.github.io/adk-docs/streaming/custom-streaming/