AstraDB document store

[masci]

Summary and motivation

DataStax Astra DB is a serverless vector database that’s perfect for managing mission-critical AI workloads. It’s built on Apache Cassandra®, making Astra DB a highly scalable, reliable database technology. This makes it a powerful all-in-one data storage solution, ideal for Generative AI projects.

Detailed design

Implement the DocumentStore protocol and provide a specific documents retriever.

Checklist

If the request is accepted, ensure the following checklist is complete before closing this issue.

• The code was merged in the main branch Adding AstraDB as a DocumentStore #144
• Docs are published at https://docs.haystack.deepset.ai/
• There is a Github workflow running the tests for the integration nightly and at every PR
• A label named like integration:<your integration name> has been added to this repo
• The labeler.yml file has been updated
• The package has been released on PyPI
• AstraDB - integration tile #164
• The integration has been listed in the Inventory section of this repo README
• AstraDB - example #163
• The feature was announced through social media

[julian-risch]

Done! 🎉