Lib.rs

› Cryptography › Magic Beans
#bit-fields #distribution #peer #availability #signed #polkadot #relay

polkadot-availability-bitfield-distribution

Polkadot Bitfiled Distribution subsystem, which gossips signed availability bitfields used to compactly determine which backed candidates are available or not based on a 2/3+ quorum

by Parity Technologies. Owned by Parity Crate Owner.

19 major breaking releases

21.0.0 Jan 29, 2025
20.0.0 Jan 14, 2025
18.0.0 Oct 1, 2024
17.0.0 Jul 19, 2024
0.0.0 Nov 21, 2022

#685 in Magic Beans

Download history 895/week @ 2024-10-21 810/week @ 2024-10-28 980/week @ 2024-11-04 769/week @ 2024-11-11 1422/week @ 2024-11-18 1108/week @ 2024-11-25 1082/week @ 2024-12-02 1590/week @ 2024-12-09 1531/week @ 2024-12-16 913/week @ 2024-12-23 917/week @ 2024-12-30 1140/week @ 2025-01-06 1334/week @ 2025-01-13 1126/week @ 2025-01-20 1102/week @ 2025-01-27 1022/week @ 2025-02-03

4,731 downloads per month
Used in 3 crates (2 directly)

GPL-3.0-only

71KB
2K SLoC

Release

Polkadot SDK Stable 2412

lib.rs:

The bitfield distribution

In case this node is a validator, gossips its own signed availability bitfield for a particular relay parent. Independently of that, gossips on received messages from peers to other interested peers.

Dependencies

~93–130MB
~2.5M SLoC