HTTP Interfaces and External Systems for Feed Yield Rates

What This Category’s Data Looks Like

Market data for feed yield rates comes from publicly monitored data from the National Animal Husbandry Station and daily closing data from domestic feed raw material spot trading platforms. Daily data updates run between 2 AM and 4 AM, delivering full market data for the previous day. The system groups each data batch by feed category, and includes fields such as feed category code, daily average transaction price, daily price change compared to the previous day, and weekly average price comparison value. The data uses a standard JSON array format, with all price-related fields using yuan/ton as the unit, and no additional formatting wrapping.

Constraints Imposed by These Characteristics on HTTP Interfaces and External Systems

The daily batch update nature of feed market data requires external systems to set HTTP interface polling cycles to match the update schedule, avoiding invalid repeated requests. The data structure grouped by category requires external systems to support filtering data by category code during connection; otherwise, results will include irrelevant category market content. All price-related fields use the yuan/ton unit, so external system numerical parsing logic must adapt to this unit to avoid confusion with unit formats of other categories. The large size of each data batch requires interfaces to support pagination pulling or category-based pulling; otherwise, requests are likely to time out.

Configuration Settings

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, and it is recommended to test on your own samples before finalizing settings.

Three Common Misconfigurations

• Issue: After uploading a feed market data file via the HTTP interface, the file cannot be parsed normally in the system. Cause: The correct Content-Type request header was not specified during upload, causing the system to fail to recognize the file format.
• Issue: When configuring a custom database connection, the interface returns 500 Internal Server Error. Cause: The field structure of feed data was not matched, and required fields such as feed_type and daily_fluctuation were not created in the custom database table.
• Issue: Continuous multiple request timeouts occur when periodically pulling feed yield rate data. Cause: The polling interval was set to less than 24 hours, and repeated requests were made during the data batch update window, triggering the interface current limiting mechanism.

How to Verify Successful Configuration

• Call the interface with the feed_type=soybean_meal parameter, verify that the returned results only include market data for soybean meal feed, with no other category fields mixed in.
• Check the system connection logs to confirm that the database connection string is configured correctly, with no driver loading failure errors related to DB_TYPE.
• Manually trigger a data pulling task, check that the unit of the daily_fluctuation field value returned is yuan/ton, with no format parsing exceptions.
• Wait for the end of the daily data update window, check the scheduled task execution records to confirm that the pulling request was initiated during the configured 5-7 hour window.

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.