What the data for this category looks like
Market data for the optoelectronics sector is sourced from public securities industry market interfaces. Real-time index points are pushed every 15 minutes during trading hours on trading days. Complete daily summary data is generated before 17:00 after market close. The data uses standard JSON format. The root node contains a data list. Each entry includes sector identifier, sector Chinese name, latest index point, daily price change value, daily trading volume, and daily trading amount. Index points are measured in points, trading volume in ten thousand shares, and trading amount in ten thousand yuan. Field names differ from individual stock market data. Absolute price change values are used instead of percentage-based price change metrics.
What Constraints These Characteristics Impose on HTTP Interfaces and External Systems
The real-time update rhythm of the optoelectronics sector requires HTTP interface call frequency to match the 15-minute update cycle. This prevents missing real-time data pushes due to overly long call intervals. The sector-level aggregated data structure requires external systems to support batch data processing. It must adapt to the return structure for multi-symbol aggregation. The special field naming and units require external systems to configure separate field mapping rules. This avoids confusion with market data from other electronic sub-sectors. Additionally, interfaces for post-market complete data and real-time intraday data differ. External systems must distinguish call scenarios. This prevents pulling incomplete field sets. Market interfaces also have current limiting rules for trading days. Call volume per unit time must be controlled. This avoids triggering current limiting blocks.
How to Set Configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
request_interval | 10 minutes | Matches the 15-minute intraday update rhythm of the optoelectronics sector, ensures coverage of all real-time data points |
data_source_type | industry sector market data | Distinguishes individual stock and sector data sources, adapts to the aggregated data structure of the optoelectronics sector |
timeout | 30 seconds | Prevents task blocking caused by temporary response delays of the market interface |
field_mapping | section code: code, index point: price, daily price change: change | Aligns with the field naming of optoelectronics sector data, reduces subsequent data cleaning costs |
update_trigger | triggered at fixed intervals | Adapts to the 15-minute intraday update rhythm, replaces event-triggered mode |
max_retries | 3 times | Handles occasional temporary current limiting or network fluctuations of the market interface |
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 individual analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- Symptom: The configured HTTP interface returns
503 Service Unavailable, and the interface address and authentication key are confirmed to be correct. Cause: The optoelectronics sector market interface triggers current limiting during the post-market batch update window on trading days. High-frequency calls exceed the interface's call threshold. - Symptom: The
当日涨跌field is empty in data pulled by the external system. Cause: The system did not distinguish between intraday and post-market interfaces. It called an interface that only returns real-time index points, and did not retrieve the complete daily field set. - Symptom: Scheduled pull tasks fail to obtain the latest daily data multiple times in a row. Cause: The pull interval is set too long, exceeding the 15-minute update cycle, and misses real-time data push points.
How to Confirm the Configuration Is Correct
- Manually call the configured HTTP interface, verify that the returned fields match the mapping configured in
field_mapping. - Start the scheduled pull task, wait for a complete update cycle, then check if the number of pulled data entries matches the expected sector data volume.
- Check the interface call logs, confirm that the number of calls per unit time does not exceed the current limiting threshold of the market interface.
- Compare the real-time optoelectronics sector data queried manually with the pulled field values, confirm consistency.
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.