13.5 Data Plane QoS Profile [Dido Solutions, Inc Wiki]

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====== 13.5 Data Plane QoS Profile ======

[[fxdemo:04-part:13-phase-0-qos-profile-model:start | Go To Phase 0 QoS Profile Model ]]

The Data Plane QoS profile supports FX transaction, validation, semantic, contract state, and cash-flow information exchange.

Data Plane communication must support structured FX information flow among implementation participants. It must provide enough reliability and ordering to demonstrate the Phase 0 happy path and enough [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]] to support audit, provenance, replay, and later [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|Evidence]] planning.

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**Table 13-2:** Data Plane QoS profile.
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^ QoS Concern ^ Phase 0 Treatment ^
| [[dido:99_annexes:annex-b-terms-and-definitions:r:runtime_plane|Runtime Plane]] | FX Logical Data Plane |
| Example [[dido:99_annexes:annex-b-terms-and-definitions:d:dds|DDS]] Topics | Data.FX.TransactionCandidate; Data.FX.ValidationResult; Data.FX.SemanticAssertion; Data.FX.ContractState; Data.FX.CashFlowObligation |
| Communication purpose | Exchange FX transaction, validation, semantic interpretation, contract state, and cash-flow obligation information |
| Reliability expectation | Reliable delivery for information that drives downstream processing in Phase 0 |
| Durability expectation | Sufficient durability to support late-joining subscribers or replay-oriented review where Phase 0 requires it |
| History expectation | Retain enough samples to support expected downstream consumption and Phase 0 demonstration review |
| Ordering expectation | Preserve ordering where transaction lifecycle progression or downstream processing depends on sequence |
| Liveliness expectation | Support detection of unavailable publishers or subscribers where Phase 0 requires it |
| Compatibility expectation | Publishers and subscribers use compatible QoS profiles for each Data Plane Topic |
| Traceability expectation | QoS profile traces to corresponding FX logical [[dido:99_annexes:annex-b-terms-and-definitions:l:logical_communication_endpoint|Communication Endpoint]], FX logical information structure, and FX Logical Data Plane |

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