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Sōzu

What is Sōzu?

Sōzu is a reverse proxy for load balancing, written in Rust. Its main job is to balance inbound requests across two or more clusters backends to spread the load.

It serves as a termination point for TLS sessions. So the workload of dealing with the encryption is offloaded from the backend.
It can protect the backends by preventing direct access from the network.
It returns some metrics related to the traffic between clients and backends clusters behind it.