Aurora DSQL: The Adjudicator
The article discusses the capabilities of Aurora DSQL, particularly its handling of write-write conflicts and the absence of features like foreign keys and SERIALIZABLE. It explains how DSQL can maintain referential integrity by rejecting transactions that would violate it, even in concurrent scenarios. The piece also touches on the complexity of implementing these features and the role of the Adjudicator in managing transaction integrity.
- ▪Aurora DSQL can handle write-write conflict detection but lacks support for foreign keys and SERIALIZABLE isolation.
- ▪The system can reject transactions that attempt to delete accounts involved in ongoing transactions to maintain referential integrity.
- ▪The Adjudicator plays a crucial role in ensuring that transactions do not violate integrity constraints, even in concurrent operations.
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Record
| Original publisher | Marc-bowes |
| Canonical URL | https://marc-bowes.com/dsql-adjudicator.html |
| Publication time | Sat, 23 May 2026 07:05:46 -0500 |
| Retrieval time | 2026-05-23T12:07:26.436Z |
| Last seen | 2026-05-23T12:07:26.436Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | 1rvNfjVP7Tbz |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
The Adjudicator is not constrained to only offering write-write conflict detection. Let’s talk about two features that DSQL doesn’t currently offer: foreign keys and SERIALIZABLE. Every now and then a customer will ask us if our architecture makes this kind of feature hard or even impossible. Nope! It’s really quite simple, and by far the least difficult part of this system. Let’s extend our banking example. We might want to maintain an audit table of all debit-credits: -- as before: do the payment INSERT INTO audit (payer_id, payee_id, amount) VALUES (1, 2, 100); If you wanted to ensure referential integrity then you’d want DSQL to reject a subsequent transaction that tried to delete one of the accounts: DELETE FROM accounts WHERE id = 1; NOTE: If this delete was run concurrently with…
Excerpt limited to ~120 words for fair-use compliance. The full article is at Marc-bowes.
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