Rundler v0.8.0-rc0

Summary

Major Features

Remove mempool shards

• Removes mempool shards and replaces them with a builder-to-sender assigner.
• The assigner class is responsible for retrieving UOs from the pool, managing builder locks, and assigning UOs to builders.
• This is built to avoid two builders trying to bundle a UO for the same sender at the same time as this can cause onchain reverts.

Minor Features

• Global fee estimator with cache to reduce RPC calls
• More latency metrics for gas estimation
• Skip bundle simulation or only run the validation portion under certain conditions

Bug Fixes

• Fix sender balance tracking
• Fix UO receipt extra logs
• Reset chain tracker after max retries
• Use max bundle gas for max call gas during estimation
• Fix underpriced bundle transaction handling

BREAKING CHANGES

• Mempool shard support has been removed. This means that builder servers and mempool servers can only be deployed 1:1 as there is no way to share the assigner class across builder servers. If anyone has a use case for multiple builder servers they can look into building a distributed locking mechanism for the assigner.

All Changes

• fix(builder): fix underpriced handling in transaction tracker (#1119)
• fix(sim): use max bundle gas for max call gas during estimation (#1118)
• fix(pool): reset chain tracker after max retry attempts (#1117)
• fix(rpc): fix uo receipt log indexing (#1113)
• feat(builder): for v0.7+ only run the validation portion during bundle sim (#1111)
• feat: add more latency metrics (#1110)
• feat: move fee estimator to providers and add global cache (#1109)
• fix(builder): fix sender balance tracking to capture funding events (#1106)
• feat: remove mempool shards and add builder sender assigner (#1105)
• chore(ci): update spec tests, add docker caching and log archive (#1115)

Binaries

The binaries are signed with the PGP key: 85C5 DEF0 37D3 FDE4 FC17 94B1 475B 35EA 9352 EB2

System	Architecture	Binary	PGP Signature
	x86_64	rundler-v0.8.0-rc0-x86_64-unknown-linux-gnu.tar.gz	PGP Signature
	aarch64	rundler-v0.8.0-rc0-aarch64-unknown-linux-gnu.tar.gz	PGP Signature
	x86_64	rundler-v0.8.0-rc0-x86_64-apple-darwin.tar.gz	PGP Signature
	aarch64	rundler-v0.8.0-rc0-aarch64-apple-darwin.tar.gz	PGP Signature
System	Option	-	Resource
	Docker	v0.8.0-rc0

What's Changed

• chore(ci): update spec tests, add docker caching and log archive by @dancoombs in #1115
• feat: remove mempool shards and add builder sender assigner by @dancoombs in #1105
• fix(builder): fix sender balance tracking to capture funding events by @dancoombs in #1106
• feat: move fee estimator to providers and add global cache by @dancoombs in #1109
• feat: add more latency metrics by @dancoombs in #1110
• feat(builder): for v0.7+ only run the validation portion during bundle sim by @dancoombs in #1111
• fix(rpc): fix uo receipt log indexing by @dancoombs in #1113
• fix(pool): reset chain tracker after max retry attempts by @dancoombs in #1117
• fix(sim): use max bundle gas for max call gas during estimation by @dancoombs in #1118
• fix(builder): fix underpriced handling in transaction tracker by @dancoombs in #1119

Full Changelog: v0.7.2...v0.8.0-rc0