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add explanation about seen cache interval

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vyzo
2018-08-29 10:12:56 +03:00
parent cc206fd7ef
commit 86f5ad6367
1 changed files with 3 additions and 1 deletions
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pubsub/gossipsub/README.md
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@@ -226,7 +226,9 @@ The `seen` cache is the flow control mechanism. It tracks
the message IDs of seen messages for the last two minutes. It is
separate from `mcache` for implementation reasons in Go (the `seen`
cache is inherited from the pubsub framework), but they could be the
same data structure.
same data structure. Note that two minutes cache interval is non-normative;
a router could use a different value, chosen to approximate the propagation
delay in the overlay with some healthy margin.
### Topic membership