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Version: v0.4.5

Payment use cases

Payment use cases

fluxrig is a high-performance transaction runtime designed for extreme architectural flexibility in modern financial environments. It functions as a Payment Orchestration Runtime, providing a unified data flow for normalizing, routing, and processing ISO 8583, ISO 20022, and other financial protocols.

Unlike rigid fixed-logic switches, fluxrig is a modular foundation. By composing specialized technical Gears, adopters can build anything from a passive transaction monitor to a high-throughput enterprise payment gateway.

Operational patterns​

Institutional payment infrastructure is categorized across a spectrum of operational patterns. fluxrig unifies these patterns into a single, cohesive architecture.

Passive monitoring & observability​

For environments where touching the transaction cycle is restricted, the Rack operates as a non-intrusive observer.

  • Shadow Mirroring: Duplicating production traffic to a parallel Rack for logic verification without impacting real-time money movement.
  • Differential Integrity: The system flags bugs by comparing existing switch responses against new logic results before a production cutover.

Protocol orchestration gateway​

As a high-performance orchestration gateway, fluxrig connects diverse systems, from cloud-native platforms to established financial networks.

  • ISO 8583 Normalization: The Codec Gear (ISO 8583) performs deterministic translation of dense binary bitmaps into structured JSON/CBOR required by modern APIs.
  • Sovereign Tokenization: The Rack isolates sensitive data (PANs, CVVs) at the infrastructure boundary. The Token Gear (Coat Check) performs deterministic tokenization, ensuring clear-text data never enters the centralized management layer.

Active orchestration and switching​

In this high-performance pattern, fluxrig acts as the deterministic engine of the payment flow, routing transactions between originators (ATMs/POS) and processors with sub-millisecond precision.

  • Stand-in Processing (STIP): Composing a deterministic Logic Gear (STIP) allows the Rack to authorize transactions locally when the upstream host is unreachable, ensuring 100% mission-critical uptime.
  • Request/Response Matching: The Correlator Gear matches inbound requests with asynchronous responses from schemes or APIs, ensuring absolute transactional integrity and enabling high-performance reconciliation in the immutable CBOR archives.

Example: ISO 8583 acquisition gateway​

This common scenario illustrates a modern transition: receiving standard Webhook/REST calls from a terminal and orchestrating them into a financial network.

Step-by-step processing​

  1. REST Ingress: The POS terminal sends a JSON payload. The Bento Gear acts as the high-performance HTTP server, mapping the request into an internal fluxMsg.
  2. Business Logic: The Logic Gear validates the transaction (e.g., checking minimum amount) and attaches routing metadata.
  3. Protocol Encoding: The Codec Gear encodes the semantic message into the precise ISO 8583 binary bitmap expected by the external processor.
  4. Financial Egress: The Rack transmits the encoded message to the Acquirer for authorization.

Institutional permissive freedom​

fluxrig is a platform for institutional builders provided under the Apache 2.0 license.

In an industry dominated by proprietary "Black Box" switches and restrictive licenses, fluxrig offers true commercial agility. Our model ensures you can build proprietary, mission-critical logic without the risk of legal contamination or forced disclosure of your commercial intellectual property.

TIP

Verification Strategy: Before production cutover, we recommend validating all ISO 8583 logic using the ISO 8583 Robot Suite, a flagship verification suite for high-volume financial switching.