HTTP Interfaces and External Systems for Joint-Stock Bank

What the data for this category looks like

Data sources for joint-stock bank yield rate daily reports include the bank’s own retail wealth management system, public interfaces for the interbank lending market, and net value synchronization interfaces from trustee banks of wealth management subsidiaries. Updates are generated in daily end-of-day batches, with full updates completed by the next business day morning. The data uses structured array format. Each entry includes fields such as product unique identifier, product classification tag, yield benchmark parameter, minimum investment amount, term of validity, and update date. The unit for minimum investment amount is yuan. The unit for term of validity is natural day or month. Yield benchmark parameter uses standardized numerical format.

Constraints imposed on HTTP interfaces and external systems

Multiple data sources require configuring multiple interface addresses for polling or aggregation logic, to avoid single points of failure disrupting data acquisition. The fixed end-of-day update rhythm requires limiting call frequency to 1-2 times per day, to avoid triggering rate limiting rules of external systems. The structured array format requires interface parsing logic to adapt to array traversal. Field mapping must strictly match core fields such as product unique identifier and yield benchmark parameter. Authentication requirements for internal business systems require configuring parameters such as signature keys and IP whitelists. Some trustee bank interfaces also require fixed request time windows, which requires adapting to scheduled scheduling time window settings.

How to configure settings

Configuration Item	Recommended Value	Rationale
`external_api_urls`	`["https://bank-core-api.com/yield-report", "https://trustee-api.com/net-value"]`	Connect to multiple data sources to avoid data acquisition failure due to single interface outage
`request_interval`	`8 hours`	Match the batch synchronization rhythm after joint-stock bank end-of-day updates, to avoid triggering rate limits
`hmac_auth_secret`	`Fill in the key provided by the connected system`	Most joint-stock bank internal business interfaces use HMAC signature authentication to secure interface calls
`response_parse_type`	`array`	External interfaces return structured array format product data, adapting to array traversal parsing logic
`request_timeout`	`30 seconds`	External interface responses typically fall within the 10-20 second range, with reasonable buffer time reserved
`field_mapping`	`product_code → product unique identifier, yield_basis → yield benchmark parameter`	Match the correspondence between external interface return fields and internal business fields to ensure correct data mapping

The parameter values provided on this page are common starting points for configuration. Actual values are affected by material form, data volume and business rules. Specific issues require case-by-case analysis. It is recommended to test on your own samples before finalizing settings.

Three common mistakes

Phenomenon: Interface calls return 400 Bad Request, with a prompt indicating parameter format error. Cause: The yield_date parameter was not passed in the format required by joint-stock bank interfaces. Local time was used instead of the standard UTC time format.
Phenomenon: Parsed data fields are empty, or yield parameters are not correctly extracted. Cause: External interface return field names were not correctly mapped to internal business fields per the field_mapping configuration, leading to failure to match core internal fields.
Phenomenon: Interface calls trigger rate limiting, returning the 429 Too Many Requests status code. Cause: Request frequency was not limited, and call volume exceeded the daily call limit of joint-stock bank interfaces.

How to confirm successful configuration

Call the test interface, confirm the response status code is 200 OK, and the response body contains structured array format product data.
Verify parsed data fields, confirm core fields such as product unique identifier and yield benchmark parameter have been correctly mapped and extracted.
Check scheduled scheduling logs, confirm interface call times match the joint-stock bank data update rhythm, and no rate limiting rules have been triggered.
Simulate a primary interface failure scenario, confirm the system automatically switches to the standby interface and can still acquire data normally.

Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.