Sui Network Launches Mysticeti v2 to Slash Transaction Latency by 35%

TLDR:

• Mysticeti v2 merges pre-consensus validation, cutting transaction overhead and latency.
• Transaction Driver submits to a single validator, reducing CPU load and network usage.
• Asia-based nodes show a 35% latency reduction; Europe-based nodes improve by 25%.
• Protocol supports multi-round certification and fastpath transaction finality for reliability.
  

Sui Network has deployed Mysticeti v2, a major upgrade to its DAG-based consensus engine. The update integrates transaction validation directly into consensus, removing redundant pre-consensus steps. 

Mysticeti v2 introduces the Transaction Driver, simplifying how transactions are submitted and confirmed. Early benchmarks show up to 35% lower latency on Asia-based nodes and faster confirmations globally.

Mysticeti v2 Enhances Sui Consensus and Transaction Flow

Mysticeti, Sui’s original consensus protocol, launched on mainnet in July 2024 using a DAG-based model. This structure decouples transaction dissemination from ordering, improving throughput and censorship resistance. 

Mysticeti v2 merges pre-consensus validation into the main protocol, eliminating additional compute costs.

The protocol now finalizes transactions concurrently with block commits. A transaction is finalized when it achieves a quorum of certificates, while blocks still commit following the original DAG rules. 

Transactions observing sufficient reject votes are automatically discarded. This approach reduces latency for non-fastpath transactions while preserving Sui’s fastpath finality.

Explicit votes are now cast only for rejected transactions, reducing network traffic. Accept votes are implied via ancestor block links, avoiding computational bottlenecks. 

Validators may still certify transactions over multiple rounds to account for weaker network connections. The changes maintain throughput for large-scale transaction processing without overloading nodes.

Mysticeti v2 preserves the anchor commit mechanism from v1, allowing direct or indirect commits while improving transaction-level decision-making. Each transaction integrates with the DAG’s commit logic, ensuring verification occurs efficiently. 

The upgrade supports Sui’s validator committee requirements, where more than two-thirds of stake confirms validity.

Transaction Driver Simplifies Client Interaction and Boosts Efficiency

The new Transaction Driver replaces Quorum Driver for transaction submission. 

Unlike Quorum Driver, it submits each transaction to a single validator, drastically reducing network bandwidth. Validators now sign multiple transactions collectively during block signing, lowering CPU usage.

The driver selects validators based on historical latency for faster confirmations. If a validator is slow or offline, the client retries with others to maintain a one-third stake quorum. It also safeguards against spam or DoS attacks by limiting repeated submissions. 

Transaction Driver currently runs on all Mysten Labs full nodes and partner nodes, achieving a 35% latency reduction on Asia-based nodes and 25% on Europe-based nodes.

Future updates will further reduce commit rounds from four to three and enable streaming of consensus blocks to full nodes. Protocol-level adjustments aim to prevent owned-object deadlocks and maintain seamless execution.

These changes signal ongoing performance optimization across the Sui network.

The post Sui Network Launches Mysticeti v2 to Slash Transaction Latency by 35% appeared first on Blockonomi.