What the Data for This Category Looks Like
Plastics and rubber yield and market data is sourced primarily from commodity spot trading platforms, official futures exchange APIs, and industry information service providers. Data updates follow two schedules:
- Futures products push real-time market snapshots each trading day.
- Spot products update full daily data after market close each day.
Standard data documents use structured JSON format, with fields including product identifier, trading date, opening price, closing price, settlement price, price change percentage, spot benchmark price, and more. Price units are uniformly yuan per ton. Price change percentages are labeled using percentage notation. Some APIs attach additional derived fields such as position volume and warehouse receipt quantity.
Constraints on HTTP Interface and External System Integration
The multi-source nature and differing update schedules of plastics and rubber market data create multiple constraints for HTTP interface integration. Different data sources use varying authentication methods. Futures exchange APIs typically use API keys plus request signatures. Spot information APIs may only require public access keys. Corresponding authentication rules must be configured for each data source. Differences in data update frequencies require matching API call frequencies. Futures APIs require minute-level calls to obtain real-time market snapshots. Spot APIs only need one daily call to retrieve full daily data. Excessive calls will trigger API rate limits. The variety of structured JSON fields requires API return field mapping rules to cover all necessary derived fields. Some APIs use different field naming conventions. Field alias conversion rules must be configured to adapt to unified data processing logic.
Configuration Settings
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
external_api_auth_type | api_key + hmac_sha256 signature | Adapts to standard authentication rules for most commodity futures and spot data sources, ensuring secure API calls |
request_timeout | 30 seconds | Matches response latency ranges for most commodity APIs, preventing timeout errors from network fluctuations |
call_interval | 60 seconds | Matches the real-time update schedule of futures market data, while avoiding exceeding API rate limits |
field_transform_rule | Automatically map data source fields to system standard fields | Plastics and rubber data includes multiple derived fields, requiring unified conversion to preset yuan per ton and percentage formats |
data_sync_cron | 0 18 * * 1-5 | Adapts to the post-market close update schedule of spot data, syncing full daily data once per workday |
temp_real_time_call | Enabled, call once per minute | Supplementary coverage for futures real-time market data acquisition needs, with no conflict with daily full sync |
The parameter values provided on this page are common starting points for configuration setup. Actual values are affected by material form, data volume, and business rules. Specific issues require case-by-case analysis. Testing on in-house samples is recommended before finalizing settings.
Three Common Configuration Errors
- Issue: API calls return a
403 Forbiddenerror, or prompt authentication failure. Cause: Matching authentication rules are not configured for plastics and rubber data sources, and authentication methods for different data types are mixed. - Issue: Price change percentage fields returned by the API are empty, or units display incorrectly. Cause: Field conversion rules are not configured, and raw fields from data sources are not converted to the system's preset format standards.
- Issue: Scheduled tasks fail to retrieve the latest daily data, or trigger API rate limit prompts. Cause: Call frequency configuration is incorrect. The call interval for spot data sources is set to a minute-level interval, exceeding the API's allowable call limit.
How to Verify Successful Configuration
- Use the configured API debugging tool to send a simulated request, and verify that the returned results include preset plastics and rubber market-related fields.
- Check API call logs to confirm that the authentication process completes normally, with no authentication failure error status codes.
- Review scheduled task execution records to confirm that data sync frequency matches the configured update rules.
- Compare field formats returned by official data sources with formats stored in the system, to confirm that unit and value conversion rules have taken effect.
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.