Our dApp is struggling with high gas fees on Layer 1. We are looking at Optimistic vs. ZK-Rollups. From a Web3 & Blockchain engineering perspective, which one offers the best balance of security and withdrawal speed for a high-frequency trading platform? I've heard ZK is the future, but is it ready for production use right now?
3 answers
For high-frequency trading, ZK-Rollups like zkSync or Starknet are technically superior because they offer near-instant finality for withdrawals compared to the 7-day challenge period of Optimistic Rollups. However, back in 2024, the EVM compatibility for ZK was still maturing, making development slightly more complex. If you need a Web3 & Blockchain solution that "just works" with your existing Solidity code today, Arbitrum or Optimism are the safer bets. They have much larger ecosystems and more mature tooling, even if the withdrawal delay is a bit of a nuisance for some users.
Have you considered the data availability costs, or are you strictly looking at the execution fees when deciding between these two different scaling architecture
Honestly, for a trading platform, liquidity is king. Arbitrum currently has the most TVL, which might be more important for your users than the underlying tech stack.
Paul makes a solid point; tech is great, but without users and liquidity, even the most advanced ZK-Rollup won't save a failing DeFi protocol.
Kevin, we are looking at both, but the execution speed is our primary bottleneck. We’ve noticed that during periods of high network congestion, even some L2s see a spike in costs due to the L1 settlement fees. We are hoping that EIP-4844 and the introduction of "blobs" will significantly reduce these costs for us in the near future, making the choice between the two rollups more about the technical feature set rather than just the transaction price.