HTTP Interfaces and External Systems for Air Governance

What this category of data looks like

Air governance project revenue yield and daily market report data primarily come from on-site monitoring sensors, corporate environmental protection operation logs, and emission reduction accounting systems of local ecological environment departments. Two update schedules apply. Pollutant concentration data from real-time monitoring points refreshes every 5 minutes. Full statistical data used for daily reports is updated for the previous day during the early morning hours each day. Standard data uses JSON format. It includes monitoring point code, PM2.5/PM10/SO2/NOx concentration values, governance equipment start/stop duration, energy consumption data, emission reduction accounting values, corresponding subsidy or revenue amounts, and other fields. monitor_point_id is a 16-character string identifier. daily_income is the same-day revenue amount, with the unit yuan.

What constraints these characteristics impose on HTTP interfaces and external systems

The multi-schedule update feature of air governance data requires HTTP interfaces to support two operation modes: real-time single-point query and batch daily report retrieval. The complex data structure with multiple fields requires interfaces to support field filtering. This avoids invalid data transmission consuming bandwidth. The binding of emission reduction revenue to official accounting vouchers requires external systems to carry voucher parameters when calling the interface. The interface will filter related data if no voucher parameters are provided. The full update peak during the early morning hours each day requires interface rate limiting configurations to match the request pressure during this period. This prevents external systems from being blocked during peak hours.

Configuration Settings

Configuration Item	Suggested Value	Rationale
`API_REQUEST_TIMEOUT`	`10 seconds`	Transmission delay for real-time monitoring data is typically within 5 seconds. Setting this timeout prevents blocking of external system request queues
`BATCH_FETCH_SIZE`	`50 items per request`	The number of air governance monitoring points typically ranges from tens to hundreds. Fetching 50 items per request balances transmission efficiency and server load
`FIELD_SELECTION_ENABLED`	`Enabled`	Air governance data has many fields. When enabled, core fields such as `monitor_point_id` and `daily_income` can be returned as needed, reducing bandwidth usage
`RATE_LIMIT_PER_MINUTE`	`100 requests`	Peak request volume during the daily early morning update period is approximately 80 requests per minute. Setting this value reserves reasonable buffer to avoid rate limiting blocks
`VOUCHER_REQUIRED`	`Enabled`	Emission reduction revenue data must be linked to official accounting vouchers. When enabled, invalid requests without valid vouchers are intercepted

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 case-by-case analysis. It is recommended to test on your own samples before finalizing settings.

Three Common Misconfigurations

A call to the interface returns 400 Bad Request with the prompt invalid field filter. This occurs when FIELD_SELECTION_ENABLED is not enabled, and a custom field list is passed directly. The interface cannot recognize the request parameters in this case.
Frequent timeouts occur when pulling daily report data during the early morning hours each day. This occurs when RATE_LIMIT_PER_MINUTE is not adjusted. The request volume exceeds the interface rate limit threshold during peak hours, resulting in server interception.
The daily_income field received by the external system is empty. This occurs when VOUCHER_REQUIRED is not enabled, and no accounting voucher ID is carried. The interface filters revenue data without vouchers in this scenario.

How to Confirm Proper Configuration

Call the configured interface, check that the returned fields match the preset FIELD_SELECTION_ENABLED configuration. Confirm that only the specified core fields are returned.
Send batch requests during the daily early morning peak period. Check that all interface return status codes are 200 OK, and confirm that the rate limiting configuration is active.
Send a request with a valid accounting voucher ID. Check that the daily_income field in the response contains valid values, and confirm that the data verification configuration is working correctly.
Send a real-time data query request. Check that the returned delay meets expectations, and confirm that the timeout configuration is reasonable.

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.