--- title: Aurora DSQL: Scalable, Multi-Region OLTP | daily.dev description: A deep technical analysis of the Aurora DSQL architecture paper by a former AWS team member who worked on the project. The post breaks down DSQL's core design... canonical: https://daily.dev/posts/aurora-dsql-scalable-multi-region-oltp-vavvmhnzn twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Aurora DSQL: Scalable, Multi-Region OLTP | daily.dev og:description: A deep technical analysis of the Aurora DSQL architecture paper by a former AWS team member who worked on the project. The post breaks down DSQL's core design... og:url: https://daily.dev/posts/aurora-dsql-scalable-multi-region-oltp-vavvmhnzn og:image: https://api.daily.dev/og/posts/vAvVMhnZN.png og:image:alt: Aurora DSQL: Scalable, Multi-Region OLTP og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Aurora DSQL: Scalable, Multi-Region OLTP **[Metadata](https://daily.dev/sources/muratbuffalo)** · 6 min read · 0 upvotes · 0 comments ## Summary A deep technical analysis of the Aurora DSQL architecture paper by a former AWS team member who worked on the project. The post breaks down DSQL's core design philosophy of 'exploding the monolith' into independent horizontally scalable services: Query Processors, Storage Nodes, Adjudicators, Journals, and Crossbars. Key architectural bets include relying on synchronized physical clocks (AWS TimeSync) for coordination-free reads, Optimistic Concurrency Control paired with MVCC under Snapshot Isolation, strong linearizable consistency, hard transaction size caps (3,000 rows / 10MiB), and a Warp-inspired single-leader 2PC optimization. The payoff is 0-RTT consistent reads, 1-RTT commits, independent scalability of compute/storage/commit layers, and no pessimistic lock contention. Tradeoffs include write-write conflicts on hot keys under OCC, WAN latency penalties before conflict detection in multi-region scenarios, and friction with foreign key constraints and high-locality sequences. The author also reflects on how reusing existing AWS infrastructure (Journals, PostgreSQL engine) and strong upfront design made building a novel global database surprisingly tractable. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [DSQL: Keeping Your Pager Quiet](https://daily.dev/posts/dsql-keeping-your-pager-quiet-q5ixmakvu) · Marc Brooker · 0 upvotes · 0 comments - [Why Strong Consistency?](https://daily.dev/posts/why-strong-consistency--qk4prqx2z) · Lobsters · 4 upvotes · 0 comments - [User authentication and session management with Amazon Aurora DSQL](https://daily.dev/posts/user-authentication-and-session-management-with-amazon-aurora-dsql-nldf9icyf) · AWS Database Blog · 0 upvotes · 0 comments --- Tags: [#postgresql](https://daily.dev/tags/postgresql) [View this post on daily.dev](https://daily.dev/posts/aurora-dsql-scalable-multi-region-oltp-vavvmhnzn) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Aurora DSQL: Scalable, Multi-Region OLTP","url":"https://daily.dev/posts/aurora-dsql-scalable-multi-region-oltp-vavvmhnzn","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/aurora-dsql-scalable-multi-region-oltp-vavvmhnzn"},"datePublished":"2026-07-24T00:19:22.418Z","dateModified":"2026-07-28T17:29:48.574Z","description":"A deep technical analysis of the Aurora DSQL architecture paper by a former AWS team member who worked on the project. 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