How to configure `MAX_CONNECTION_AGE` on Python gRPC server?

Question

I noticed that a maintainer of gRPC suggested using MAX_CONNECTION_AGE to load balance long lived gRPC streams in their video, Using gRPC for Long-lived and Streaming RPCs - Eric Anderson, Google. I also found an implemented proposal which only lists C, Java and Go:

Status: Implemented
Implemented in: C, Java, Go

In practice, how do I use MAX_CONNECTION_AGE in a python server?

Ben Butterworth · Accepted Answer · 2022-07-18 14:02:54Z

2

You can use grpc.server()'s options argument:

options – An optional list of key-value pairs (channel_arguments in gRPC runtime) to configure the channel.

You would use GRPC_ARG_MAX_CONNECTION_AGE_MS, defined in grpc_types.h:

/** Maximum time that a channel may exist. Int valued, milliseconds.
 * INT_MAX means unlimited. */
#define GRPC_ARG_MAX_CONNECTION_AGE_MS "grpc.max_connection_age_ms"

For 30 days as suggested in Using gRPC for Long-lived and Streaming RPCs - Eric Anderson, Google, GRPC_ARG_MAX_CONNECTION_AGE_MS should be 2592000000 (30*24*60*60*1000)

answered Jul 18, 2022 at 14:02

Ben Butterworth

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