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Implement voting sortition in bunches #1556

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merged 17 commits into from Oct 26, 2021

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marcopeereboom
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@marcopeereboom marcopeereboom commented Oct 22, 2021

This code flips differential time tickers to N go routines that expire
after some pre-determined time. We are moving to this model because
differential time tickers have proven brittle. When a differential
ticker does not fire everything else gets hung behind it but with this
model an individual hang will not impact subsequent votes.

The rough implementation is:

  • Votes are equally divided into bunches
  • Every bunch has a random start time within the first 90% of half the vote duration and a random end time within the last half of the vote duration.
  • Votes fire after bunch start + random duration
    • If the vote fails it is retried in the same loop shortly (3-17 seconds) after the failure
    • If the vote succeeds the go routine shuts down

This code flips differential time tickers to N go routines that expire
after some pre-determined time. We are moving to this model because
differential time tickers have proven brittle. When a differential
ticker does not fire everything else gets hung behind it but with this
model an individual hang will not impact subsequent votes.

The rough implementation is:
* Votes are equally divided into bunches
* Every bunch has a random start time and random duration
* Votes fire after bunch start + random duration
	- If the vote fails it is retried in the same loop shortly after
	  the failure
	- If the vote succeeds the go routine shuts down
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@lukebp lukebp left a comment

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tACK

The bunches are working nicely.

@lukebp lukebp merged commit 7c4fba1 into decred:master Oct 26, 2021
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2 participants