Stateful session routing breaks with load balancers

8/10 High

MCP assumes persistent 1:1 client-server connections, but production deployments with load balancers route requests across instances. When a session routes to a different server without state, connections fail. Workarounds (sticky sessions, Redis, distributed state) add significant operational complexity.

MCPload balancersRedis
Category
architecture
Workaround
hack
Stage
deploy
Freshness
persistent
Scope
framework
Upstream
open
Recurring
Yes
Buyer Type
enterprise
Maintainer
active

Sources

Collection History

Query: “What are the most common pain points with MCP for developers in 2025?”4/7/2026

When MCP sessions are stateful and the load balancer routes the next request to a different server instance, that instance has no record of the session, and things break. The workarounds, such as sticky sessions, shared Redis session stores, and distributed state management, add operational complexity and cost that teams did not anticipate.

Created: 4/7/2026Updated: 4/7/2026