Research · Tag · Connection Exhaustion

Posts tagged connection exhaustion.

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COSMOS
2026-08-28

The Cosmos-SDK gRPC server never sets MaxConcurrentStreams, and a fork already fixed it

Cosmos-SDK builds its gRPC server without grpc.MaxConcurrentStreams, so grpc-go defaults to an effectively unbounded stream count and advertises no cap to clients: each held stream pins roughly 7 KB of server state, reaching 7.6 GB RSS at the top of the tested sweep with no plateau in sight.

Simon Morley
Read →7 min read