What the data for this category looks like
Market and yield rate data for chemical raw materials comes primarily from domestic bulk commodity spot trading platforms, industry association monitoring databases, and futures exchange contract data. Yield rate data is calculated using the same-day quotation and the average price over a specified historical period. Data update frequencies fall into three categories: spot quotations update daily, futures contract prices update every 15 minutes during trading hours, and monthly inventory and production capacity data updates every ten days. Each data record includes fields such as the general raw material name, CAS registry number, origin, specification model, same-day quotation, previous period quotation, and total trading volume. Most units are yuan/ton, kg/batch, or USD/barrel. Some special raw materials include additional parameters such as purity and moisture content.
What constraints these characteristics impose on deployment and upgrade
Chemical raw material market and yield rate data has multi-source attributes, complex field structures, and differentiated update frequencies. These traits impose clear constraints on the deployment and upgrade process. Synchronizing multi-source data requires configuring different update intervals to avoid resource redundancy. Complex specifications and additional parameters require additional configuration of field validation and mapping rules to prevent invalid data from entering the knowledge base. High-frequency updated futures data requires adjusting timeout and retry parameters to ensure synchronization stability. During the upgrade process, pay attention to changes in front-end rendering logic to avoid page exceptions caused by multi-specification field display. Also, maintain compatibility with field mapping rules from older configuration files.
How to set the configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
DATA_SYNC_INTERVAL | 15 minutes (futures source), 24 hours (spot source) | Adapts to the real-time update rhythm of chemical raw material futures and daily update rhythm of spot data, balances data timeliness and server resource usage |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Chemical raw material data documents often include long text fields with multiple specifications and origins. Parsing takes longer than standard documents, so the default timeout duration is insufficient |
CUSTOM_FIELD_MAPPING | CAS number → raw material identifier, origin → production location, same-day quotation → current price | Matches the unique field naming differences in chemical raw material data, unifies the format standard for importing into the knowledge base |
UPLOAD_FILE_MAX_SIZE | 1000 MB | Monthly industry inventory reports often include historical data for multiple product categories, so file volume exceeds the default upload limit |
ERROR_RETRY_TIMES | 3 times | Multi-source data synchronization is easily affected by network fluctuations. Reasonable retries reduce the rate of synchronization failures |
FIELD_VALIDATION_RULES | Enable CAS number format verification | Prevents invalid CAS number data from entering the knowledge base, improves subsequent retrieval accuracy |
The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material form, data volume, and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing settings.
Three common errors
- Scenario: An uncaught exception error is returned when calling the data workflow after private deployment. Cause: The unit for
DATA_SYNC_INTERVALin the configuration file is not filled according to specifications, causing synchronization tasks to fail to trigger normally. - Scenario: The data preview page displays layout errors after upgrading to v4.8.20. Cause: Front-end rendering logic is adjusted after the upgrade, and does not adapt to the long text display of multi-specification fields for chemical raw materials.
- Scenario: Scheduled synchronization tasks fail multiple times, returning status code 413. Cause: The
UPLOAD_FILE_MAX_SIZEparameter is not adjusted, so the monthly inventory report file volume exceeds the default limit.
How to confirm the configuration is set correctly
- Manually import a chemical raw material spot data document with multiple specifications, verify that fields are fully mapped with no missing items.
- Trigger a single futures source data synchronization, check that the synchronization log shows successful execution and elapsed time falls within the expected range.
- Access the data preview page after upgrading, confirm that the display format of multi-specification fields meets business requirements with no layout errors.
- Check that all parameter values in the configuration file match the recommended values in this document.
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.