.NET: Change A2A default session store to NoopAgentSessionStore#6635
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Align the A2A hosting layer default session store with the AG-UI sibling by using NoopAgentSessionStore, making persistence an explicit opt-in choice. Update samples to document how to register a persistent session store for multi-turn conversations. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Pull request overview
Updates the .NET A2A hosting defaults to use NoopAgentSessionStore (making session persistence an explicit opt-in), and adjusts tests/samples to reflect the new default behavior and recommended production isolation setup.
Changes:
- Switch A2A’s default
AgentSessionStorefrom in-memory toNoopAgentSessionStore. - Update unit test naming/comments to reflect the new default session-store behavior.
- Update end-to-end samples to document session isolation requirements and how to opt into persistent session storage.
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| dotnet/src/Microsoft.Agents.AI.Hosting.A2A/A2AServerServiceCollectionExtensions.cs | Changes the fallback session store to NoopAgentSessionStore when none is registered. |
| dotnet/tests/Microsoft.Agents.AI.Hosting.A2A.UnitTests/A2AServerServiceCollectionExtensionsTests.cs | Updates test naming/comments to describe the new noop session store default. |
| dotnet/samples/05-end-to-end/AgentWebChat/AgentWebChat.AgentHost/Program.cs | Documents production session isolation and the new default non-persistent session behavior. |
| dotnet/samples/05-end-to-end/A2AClientServer/A2AServer/Program.cs | Documents production session isolation and provides an example of explicitly registering a session store. |
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Rename test to FallsBackToNoopSessionStoreDefaultAsync to avoid implying all stores default to noop (task store still uses InMemory). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Align the A2A hosting layer default session store with the AG-UI sibling by using \NoopAgentSessionStore, making persistence an explicit opt-in choice.
Update samples to document how to register a persistent session store for multi-turn conversations.