What this category of data looks like
Urban public transit business process data mainly comes from three systems: the transit group dispatching system, IC card settlement system, and real-time passenger flow monitoring system. Real-time arrival and passenger flow data is updated from seconds to minutes. Route schedules and service outlet information is updated daily. Station and process rule information is updated quarterly. A single business process data entry includes these fields: route identifier, station name, real-time arrival time, process step array, service location, and fee standard. The route identifier is a 6-digit numeric string. Real-time timestamps use ISO 8601 format. The fee standard unit is yuan. Process steps are stored as an array. Each step includes operation instructions and estimated time consumption.
What constraints these characteristics impose on HTTP interfaces and external systems
Real-time second-level data updates require interfaces to set short timeout thresholds. This prevents request backlogs from consuming server resources. Daily and quarterly update cycles for route and process information require interfaces to configure reasonable cache periods. This avoids frequent full data pulls. The variable array structure of business process steps requires parsing logic to adapt to different length step lists. Fixed fields cannot be hardcoded. The need to pass dynamic parameters such as route ID and service type requires interfaces to support custom variable injection. Static configuration alone cannot complete integration.
How to set up configurations
Following the FastGPT v4.17.0 interface configuration specification, refer to the following table to complete parameter settings:
| Configuration Item | Recommended Approach | Basis for This Approach |
|---|---|---|
Authorization | Bearer exclusive API key provided by the transit group | Transit system external interfaces generally use Bearer token authentication mechanisms |
variables | Pass dynamic parameters such as route ID, service type, and user credential type | Business process parameters change dynamically based on user scenarios and requirements |
responseData | Parse the steps array field in returned content | Transit service process data is encapsulated in the response body as a nested array |
| Interface cache period | 86400 seconds | Route schedules and service outlet information are updated once daily |
| Request timeout threshold | 10–15 seconds | Typical response delay for real-time transit data is under 10 seconds |
| Parameter validation rules | Validate that route ID is a 6-digit numeric string | Unified route identifier format specification from the transit group |
Three common errors
- Empty response fields after calling the interface, unable to obtain transit service process steps: Failed to correctly parse the nested steps array in
responseData, and mistakenly used the top-level object directly as process data. - Frequent interface call timeouts, service experiences lag: Did not adapt to the response rhythm of real-time transit data, set an overly long timeout threshold, leading to request backlogs consuming server resources.
- Authentication failure returns 401 status code, unable to start the process normally: Did not use the exclusive API key provided by the transit group, and incorrectly configured the
Authorizationfield content.
How to confirm the configuration is complete
- Call the configured HTTP interface, check whether the returned
responseDatacontains transit-specific fields such as route ID and station name. - Pass a test 6-digit numeric route ID and student card annual review service type, and verify that the returned process steps match the publicly available student card annual review process.
- Simulate high-frequency calls, check that server CPU and memory usage do not show abnormal fluctuations.
- Replace an invalid authentication key, confirm that a 401 status code is returned, verifying that the authentication configuration is effective.
All configuration values listed here are common starting points. They should be evaluated against the reader's own specific samples and use cases.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.