Market state
Do not interpret the absence of updates as an outage in every circumstance. Combine connection health with symbol status and session information so a weekend closure is distinct from an unexpected interruption during an active session.
Market data · deployment planning
Forex Streaming Prices
Continuous FX pricing requires a clear session calendar and a consumer policy for quiet, closed and disconnected instruments.
Delivery cadence
Choose whether a consumer needs every eligible tick or conflated updates. Measure queue age and processing lag under bursts; a fast network connection can still deliver prices too late when the application cannot keep up.
Requirements to confirm
- Session and holiday calendar
- Per-symbol freshness rules
- Full-tick or conflated delivery
- Consumer processing-lag metrics
Bring the proposed instrument list, source documentation and consumer workflow to a technical discussion. The agreed integration specification defines coverage, fields, usage permissions and acceptance tests.
Integration brief
Forex Streaming Prices: what to agree before connecting
| Subscription scope | Specify symbol identifiers, supported fields and acknowledgement or rejection behaviour. |
|---|---|
| Quote semantics | Agree snapshot versus incremental updates, source timestamps and status fields. |
| Consumer pressure | Define application buffer limits and what happens when a consumer cannot process updates fast enough. |
| Reconnect rules | Agree authentication, resubscription, fresh snapshot and duplicate-message handling. |
Recover application state explicitly
For Forex, define what a new subscriber receives before incremental updates begin. A connected socket does not prove a symbol is fresh. Separate heartbeat health from per-symbol timestamps and document the resubscription procedure after a disconnect.
What to test
- Disconnect during active updates and rebuild a current symbol state.
- Slow the consumer and observe the agreed buffering behaviour.
- Distinguish an inactive instrument from a stalled subscription.
{
"type": "quote",
"symbol": "EURUSD",
"bid": "1.10000",
"ask": "1.10010",
"source_time": "2026-10-18T12:00:00.000Z",
"received_at": "2026-10-18T12:00:00.012Z",
"source_id": "example-source",
"status": "illustrative"
}Illustrative engineering example, not live prices or a published API contract. Confirm field names and delivery rules during integration.