● Covered by 1 source · 1 reportMedium impact1 neutral
Cassandra 6 to Introduce Strictly Serializable Cross-Partition ACID Transactions with Accord
Key points
- Cassandra 6 will include Accord for ACID transactions.
- Accord enables strictly serializable cross-partition transactions.
- This is a major change from Cassandra's original eventual consistency.
- The feature is available in the Cassandra 6.0 pre-release branch.
Evolution of Cassandra's Transactional Capabilities
Cassandra has progressively enhanced its transactional features since its inception. Initially, it offered atomic batches in 2013, followed by single-partition Paxos compare-and-swap later that year. The upcoming Cassandra 6 release introduces Accord, which provides strictly serializable cross-partition transactions, a significant advancement for the database.
Impact of ACID Transactions
The integration of ACID transactions transforms Cassandra into a more robust database system, moving beyond its original eventually consistent data model. This development allows Cassandra to support more complex transactional workloads, although it still retains limitations such as non-interactive transactions and specific SQL constraints. This change is particularly relevant for large users like Apple, eBay, Bloomberg, and Netflix who rely on Cassandra's sharding and replication capabilities.
Testing Accord in Pre-release
Accord is currently available for testing in the Cassandra 6.0 pre-release branch. Developers can set up a multi-node cluster to evaluate Accord's performance alongside existing transactional options like BATCH updates and Lightweight Transaction (LWT) updates. This allows for early assessment of the new ACID capabilities before the official release of Cassandra 6, which is anticipated later this year.
✨ This summary was generated by AI from the outlets' reporting listed below. It is not independently verified and may contain errors — check the original sources. How BrevFeed works →
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Reporting from
Cassandra 6, currently in pre-release, will add strictly serializable cross-partition ACID transactions through a new feature called Accord. This marks a significant evolution for Cassandra, moving it from an eventually consistent model to a database supporting full ACID properties for certain operations.