G2

Verified User in Financial Services

Small-Business (50 or fewer emp.)

8/21/2026

"Strong Yellowstone gRPC service with excellent technical support"

5/5

What do you like best about Chainstack?

The service itself has been performing well once properly configured, and I was especially impressed by the technical support experience.

I initially ran into a difficult issue where full transaction subscriptions were delivering far below the expected throughput. After quite a bit of testing, Luiz Moraes from Chainstack Support helped identify the actual cause: the HTTP/2 flow-control window on the grpc-js client connection.

After applying the recommended 16 MiB flow-control window, our full transaction stream improved to roughly 450–500 messages per second and started following the Solana chain head normally.

What I appreciated most was that the support team did not just give generic troubleshooting suggestions. Luiz responded quickly, reviewed the technical details carefully, reproduced the behavior on their side, and eventually provided a specific configuration change that solved the problem. Review collected by and hosted on G2.com.

What do you dislike about Chainstack?

documentation around high-throughput Yellowstone gRPC clients could be improved Review collected by and hosted on G2.com.

What problems is Chainstack solving and how is that benefiting you?

Chainstack is helping me access reliable, high-throughput Solana infrastructure without having to operate and maintain my own node. I mainly use it for Yellowstone gRPC

The main benefit is that I can focus on building and testing my application instead of spending time maintaining blockchain infrastructure. After the client-side HTTP/2 flow-control issue was resolved, the full transaction stream was able to Review collected by and hosted on G2.com.