Olaoluwa Osuntokun 05702d48b2 discovery: switch to bytes based rate limiting for outbound msgs ...

In this commit, we revamp the old message based rate limiting. First, we
move to meter by bytes/s instead of messages/s. The old logic had an
error in that it limited groups of message replies, instead of each
message. With this new approach, we'll use the newly added
SerializedSize method to implement fine grained bandwidth metering.

We need to pick two values, the burst rate, and the msg bytes rate. The
burst rate is the max amt that can be sent in a given period of time. We
need to set this above 65 KB, or the max msg limit, otherwise no
messages can be sent. The bucket starts with this many tokens (bytes).
As those are depleted, the amount of tokens is refilled at the msg
bytes rate.

As conservative values, we've chosen 200 KB as the burst rate, and 100
KB/s as the limit.

2025-03-24 19:21:45 -07:00

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