Aurora DSQL: Scalable, Multi-Region OLTP

Marc Brooker, Mark Bowes, Mike Hershey, Zak van der Merwe, James Morle, Matthys Strydom. 2026.

What this paper does with SQLancer

SQLancer is used in production testing rather than cited as related work: the paper says its fuzz-testing approach builds on SQLancer's, generating millions of SQL statements and running them against both DSQL and a reference. That is an industrial adoption of the approach rather than of the codebase, as far as the mention shows. A system description of Aurora DSQL, a serverless multi-region active-active SQL database. Compute, storage and transaction coordination are separated into independently scalable services, with PostgreSQL-compatible query processors running statelessly in Firecracker MicroVMs. It uses multiversion concurrency control with precision timestamps for coordination-free reads and optimistic concurrency control for writes, deferring coordination to commit time. Written by claude-opus-5 from the 1 place this paper refers to SQLancer. The quotations below are the paper's own words, stored verbatim when the text was extracted.

How it was classified

uses infrastructure — uncertain (unclear)

M1 says the fuzz-testing approach builds on the approach of SQLancer and generates millions of statements run against DSQL and a reference. Whether AWS runs SQLancer's code or reimplemented its approach is not settled by the mention.

The fuzz-testing approach, building on the approach of SQLancer [ 4], generates millions of example SQL statements and runs them both on DSQL and on AuroraPostgreSQL. M1 · 5.6 Effects of Clock Skew · page 10

extends technique — no

No technique is extended; the citation is background.

compares with — no

No empirical comparison against SQLancer is reported in the mentions.

describes as state of the art — no

The citation does not characterise SQLancer as the state of the art.

SQLancer publications it cites (1)

Bibliography entries that resolved to a SQLancer publication, or to a paper by one of the project's authors. A sentence citing one of these numbers is a reference to SQLancer even when it never writes the name.

#	Entry	Matched as
4	Jinsheng Ba and Manuel Rigger. 2023. Testing database engines via query plan guidance. In (ICSE). IEEE, 2060–2071.	sqlancer publication · QPG

Every place it refers to SQLancer (1)

1 sentence, each stored verbatim from the extracted text with where it was found and how. “Citation marker” means the sentence names no tool at all and was reached through a reference number that resolved to a SQLancer publication.

Id	Sentence	Found by	Where
M1	The fuzz-testing approach, building on the approach of SQLancer [ 4], generates millions of example SQL statements and runs them both on DSQL and on AuroraPostgreSQL.	name reuse component	5.6 Effects of Clock Skew page 10

This page is rendered from _data/papers/paper_arxiv_2607_13276.json, extracted from arxiv. 13 pages, 40 references parsed.