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description: Sei 究竟如何成为交易的最佳Layer 1？ How exactly is Sei the optimal Layer 1 for exchanges?
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# DEX 优化 (DEX Optimizations)



### 技术突破 (Technical Breakthroughs)

* **Optimistic block processing**: heavily decreases block latency\
  **乐观区块处理**：大大降低区块延迟
* **Native order matching engine**: driving scalability for orderbook DEXs on Sei\
  **原生订单匹配引擎**：推动 Sei 上订单簿 DEX 的可扩展性
* **Overloading consensus:** Sei is the fastest chain to finality at 600ms\
  **重载共识：** Sei 是最快达到 600ms 的链
* **DeFi-specific parallelization:** massively increases throughput and order processing\
  **针对DeFi 的并行化：** 大幅提高吞吐量和订单处理

### 抢跑预防 (Frontrunning Prevention)

* By redesigning Sei from top to bottom, there have been major improvements in transaction processing and the mempool to help combat frontrunning\
  通过从内到外重新设计 Sei，在交易处理和内存池方面进行了重大改进，以帮助打击抢跑交易
* **Frequent batch auctioning**: rather than executing each order one-by-one (as would happen on Ethereum or Solana). Sei can aggregate every order together at the end of the block and execute all market orders at the same price to help prevent frontrunning\
  **频繁批量拍卖**：而不是一个接一个地执行每个订单（就像在以太坊或 Solana 上发生的那样）。 Sei 可以在区块结束时将每个订单汇总在一起，并以相同的价格执行所有市场订单，来帮助防止抢跑交易

### 开发人员和用户体验 (Developer and User Experience)

* **Native price oracles**: built into the chain itself for high quality and reliable data feeds\
  **本地价格预言机**：链本身内置，提供高质量和可靠的数据推送
* **Single block order execution:** on Serum, apps need 1 transaction to place an order (adding it to a queue) and then another transaction (in another block) to “turn the crank” for order execution. Sei collapses that into 1 block for faster order execution.\
  **单区块订单执行：** 在 Serum 上，应用需要 1 笔交易来下订单（将其添加到队列中），然后需要另一笔交易（在另一个块中）来“扭动曲柄”执行订单。 Sei 将其折叠到 1 个区块来更快地执行订单。
* **Multiple levels of order bundling:** to minimize gas costs so market makers and pro traders on apps built on Sei can submit 1 transaction to update multiple markets\
  **多层次订单捆绑：** 最大限度地降低 gas 成本，因此基于 Sei 构建的应用，做市商和专业交易者可以提交 1 笔交易来更新多个市场

### 为什么选择 Cosmos (Why Cosmos)

Customizable: enables Sei to design the entire end to end blockchain flow such as aggregating orders at the end of the block to uniquely unlock orderbook apps built on Sei

可定制：让Sei 能够设计整个端到端的区块链流程，例如在区块末端聚合订单，来唯一地解锁基于 Sei 构建的订单簿应用

Modular: Cosmos SDK gives teams a platform for consensus and application layers to work together and allows for updating or replacing any individual layer of the stack

模块化：Cosmos SDK 为团队提供了一个让共识层和应用层协同工作的平台，并允许更新或替换栈的任何单层
