Company
Date Published
Author
Keshav Murthy
Word count
1485
Language
English
Hacker News points
None

Summary

The text discusses the introduction of N1QL transactions in Couchbase 7.0, a feature that enhances SQL-like operations for JSON documents within a NoSQL database environment. N1QL, a declarative language used to manipulate JSON, supports transactions that are multi-document, multi-bucket, and multi-scope, similar to traditional RDBMS transactions but optimized for Couchbase's distributed architecture. These transactions utilize optimistic concurrency control, ensuring atomicity, consistency, isolation, and durability (ACID properties) while supporting operations such as SELECT, INSERT, UPDATE, DELETE, and MERGE. The text highlights the use of a private per-transaction cache to ensure READ-YOUR-OWN-WRITE support and emphasizes performance and scalability in distributed transactions without the need for coordination between multiple transactions or nodes until the commit phase. The announcement of Couchbase 7.0 Beta in November 2020 is presented as a significant step forward, with plans for further exploration of its implementation and usage in future articles.