Engine v2 public beta: up to 700x onchain throughput

We're excited to announce the public beta for Engine v2 with a redesigned worker architecture that dramatically increases transaction processing capacity by up to 700x.

What's new?

Optimized transaction parallelization

Nonces are now assigned in parallel to send a batch of transactions from a single backend wallet at once. This update sends dramatically more transactions per block than Engine v1 (see benchmarks below).

Improved nonce management

Engine v2 introduces multiple mechanisms to recover if the onchain and Engine wallet nonces differ. It also recycles unused nonces instead of immediately cancelling them, reducing gas used during failed transactions.

High transaction API calls

API calls are more performant to send transactions (< 40ms server latency) or read transaction status (< 10ms server latency). This speedup means increased throughput with fewer server resources.

How fast is it?

With these improvements, Engine v2 is able to send significantly more transactions per second.

Here's a benchmark on B3 Sepolia with 2s block times on a single Starter Cloud-Hosted Engine:

• Engine v2 received 1500 transactions in 10s. Nearly all transactions were sent within 2s and filled up a block (700+ tx/sec)!
• Engine v1 received 250 transactions in 7.7s. Two transactions sent per block (1 tx/sec).

Note: Your results may differ based on chain, transaction type, and sustained load. Some chains and RPC providers may impose additional throughput limits.

Why is this important?

• Scale your dApp without worrying about infrastructure limitations.
• Handle traffic spikes and sustained high-volume transactions.
• Optimize gas usage to reduce operational costs.
• Build new use cases that require high-scale transactions.
• Avoid managing nonce synchronization and RPC errors in your backend.

How can I try it?

• Cloud-hosted Engine
  • Contact support@thirdweb.com to be upgraded.
  • Developers will be able to upgrade to v2 from the dashboard soon.
• Self-Hosted
  • Pull the latest v2.0.0-beta-rc* image from Docker Hub.

Please share any feedback or contact support for technical issues with Engine v2. We are continuing to test Engine v2 internally and encourage developers to treat Engine as pre-release software.

What are the breaking changes?

There are no breaking changes to existing documented interfaces to APIs or webhooks. Pending queued transactions will continue to be processed after the upgrade.

When will this Engine v2 be out of beta?

The team is continuing to test Engine on internal production environments.

Engine v2 will be released to the stable release channel after more bugfixes and incorporating customer feedback.

Stay tuned for a technical deep dive on our throughput breakthrough. Your feedback is invaluable as we refine Engine!

thirdweb Engine is an open-source server for your app to read, write, and deploy contracts at production scale.

Self-host for free or get a cloud-hosted Engine for $99/month.