We've been running Fumarole in beta for months. It exits beta June 1, and you can use it at no charge until then.

Fumarole, a persistent Solana streaming solution by Triton, exits beta on June 1. It addresses state corruption issues in stateless Solana setups by tracking positions server-side with 4-day retention, deterministic ordering, and multi-node failover. Free usage is available until June 1 for Triton customers.