What This Category of Data Looks Like
Market data related to glass yield rates is primarily sourced from domestic building materials commodity spot monitoring platforms and public exchange APIs. Spot data updates once daily at 8:30, covering float glass products from major national producing areas. Futures data updates in real time per trading day.
A single data entry uses a standardized JSON object, including fields such as producing area, product specification, benchmark settlement price, previous day's settlement price, statistical cycle, and more. Price fields use yuan per square meter as their unit, while specification fields denote thickness in millimeters.
Constraints for HTTP Interfaces and External Systems
Data is split by producing area and product specification. Interface requests must include corresponding filter parameters. Otherwise, the returned data volume will be too large, easily triggering interface rate limits.
Update times are fixed. External systems must initiate calls after 8:30 daily to avoid obtaining outdated, unupdated data.
Price fields are floating-point values, with no percentage-derived fields. No percentage parsing logic is required for the interface, but reasonable numerical range validation must be implemented.
Separate interface paths exist for futures and spot data. External systems must select the appropriate interface based on business scenarios to avoid mixing data types.
Data update frequency is fixed. The scheduled task cycle of external systems must match the daily update rhythm. Call intervals should not be set too short.
How to Configure
| Configuration Item | Recommended Approach | Rationale |
|---|---|---|
API_AUTH_KEY | Bound to the exclusive KEY assigned by the data source service provider; universal KEYs must not be used | Exclusive KEYs can be bound to exclusive call quotas, avoiding rate limiting and permission leakage risks associated with universal KEYs |
HTTP_REQUEST_TIMEOUT | 600 seconds | Glass data interface response delays typically fall within 300 seconds; this setting reserves a reasonable buffer period |
UPLOAD_FILE_MAX_SIZE | 100 MB | Supporting documents for glass market data (such as producing area daily report PDFs) typically do not exceed this size |
API_BATCH_SIZE | Top 20 entries | The volume of producing area data returned per batch should not be too large, to avoid parsing failures caused by overly large interface response bodies |
PARSE_FIELD_WHITELIST | ["producing area", "product specification", "benchmark settlement price"] | Only retain fields required for business purposes, reducing data parsing overhead and transmission costs |
RETRY_ON_ERROR | Triggered by HTTP 429 and 500 status codes | Automatically retry for rate limiting and service exception scenarios to improve call stability |
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
- Symptom: Interface calls return HTTP 403 Forbidden status codes, or return the message "Insufficient permissions". Cause: Requests were sent using a universal authentication KEY without bound exclusive call permissions.
- Symptom: Images linked with relative paths fail to load correctly in external systems, and image fields in the knowledge base are empty. Cause: Relative links were not converted to publicly accessible absolute URLs; external systems cannot resolve local relative paths.
- Symptom: Workflow API calls return HTTP 504 Gateway Timeout, or executions are force-terminated after exceeding 1200 seconds. Cause: The
HTTP_REQUEST_TIMEOUTparameter was not set reasonably, and batch data was not split into smaller batches for calls, resulting in overly long single request execution times.
How to Confirm Configuration Is Complete
- Initiate a test call, and check whether the returned fields match those in the configured
PARSE_FIELD_WHITELIST. - Review interface call logs to confirm that the authentication KEY is an exclusive KEY, with no universal KEY call records.
- Simulate a scheduled task to initiate a call after 8:30 daily, and check whether the
statistical cyclefield in the returned data shows the previous day's date. - Upload a test glass producing area daily report document, and check whether the external system can correctly receive and parse the file content.
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.