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Version: v2.x

v2.x

Stack version: v2.2​

ComponentVersion
ledgerv2.2
paymentsv2.0
walletsv2.1
orchestrationv2.0
reconciliationv2.0

Release date: February 18, 2025

Ledger​

Stateless Ledger Service​

The Ledger service is now fully stateless and can operate with multiple replicas without requiring nodes synchronization.

Zero-Downtime Upgrades​

Upgrades between versions now occur with zero downtime, ensuring a seamless transition and uninterrupted service.

New Numscript Interpreter​

The new numscript interpreter is now available in experimental mode (numscript used to be bundled in the ledger, but is now a separate, standalone library: https://github.com/formancehq/numscript)

Configurable Feature Disabling at the Bucket Level​

You can now disable specific features on a per-ledger basis at the bucket level, allowing for better optimization based on your usage patterns.

Enhanced Write Performance​

Significant improvements have been made to write operations, resulting in a higher throughput of transactions per second.

Improved Read Performance​

Most endpoints have been optimized for faster read operations, leading to a more responsive system overall.

Enhanced _bulk Endpoint​

The _bulk endpoint has been significantly improved with three major capabilities:

Streaming Support

Bulk requests can now be streamed, allowing large payloads to be processed efficiently without requiring the entire request to be loaded into memory.

To enable streaming, use the application/vnd.formance.ledger.api.v2.bulk+script-stream content type.

Parallel vs. Sequential Processing

You can now specify whether bulk elements should be processed in parallel or sequentially using the parallel query parameter:

  • parallel=true: Elements are processed in parallel, improving throughput.
  • parallel=false: Elements are processed sequentially, maintaining order.

Atomic Bulk Execution​

You can now decide whether bulk elements should be committed atomically using the atomic query parameter:

  • atomic=true: The entire batch is committed as a single transaction. If any element fails, the entire batch is rolled back.
  • atomic=false: Each element is processed independently. If one element fails, it does not affect the others.

Usage Example:

curl -H "Authorization: Bearer $(fctl cloud generate-personal-token)" \ -X POST <stack-url>/api/ledger/v2/<ledger-name>/_bulk?parallel=true&atomic=false \ -H 'Content-Type: application/vnd.formance.ledger.api.v2.bulk+script-stream' \ --data-binary @<stream file location>

These improvements provide greater flexibility and control over bulk processing, optimizing for performance, consistency, and reliability.