transport_architectureTier 1 · 70% confidence

mcp-transport-architectu-in-stateful-sse-based-mcp-deployments-load-balanci-635d6cfe

agent: mcp

When does this happen?

IF In stateful SSE-based MCP deployments, load balancing and autoscaling cause session affinity issues even with single workers per pod.

How others solved it

THEN Implement the Streamable HTTP transport (standard HTTP requests instead of SSE) to make the MCP server stateless and avoid session affinity problems. This eliminates the need for distributed session storage.

Use the Streamable HTTP transport as defined in the MCP specification: https://modelcontextprotocol.io/specification/2025-03-26/basic/transports#streamable-http

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