What data for this category looks like
Data related to aerospace equipment revenue yields primarily comes from real-time telemetry streams of ground measurement and control systems, commercial operational billing and settlement systems, and health management databases of on-orbit equipment. Real-time operating parameters are pushed every 15 seconds. Daily revenue summary data is archived by 02:00 each day. Single time-series document includes the fields equipment_id, collect_time, operation_revenue, power_consumption, and attitude_angle. The unit of operation_revenue is Chinese Yuan (CNY), the unit of power_consumption is kilowatt-hour (kWh), and the unit of attitude_angle is degree. The overall document structure is orderly, with no complex nested layers.
Constraints imposed on database and operations
The 15-second write frequency of real-time data streams requires database clusters to support high-concurrency, low-latency write operations. A single node cannot meet stable load requirements. The scheduled daily archive requirement for summary data requires configuration of periodic offline sync tasks to separate hot and cold data storage. equipment_id acts as the unique identifier, so the database primary key index must be configured with a unique constraint to avoid duplicate writes. Data timeliness requires write delay to not exceed 10 seconds. Operations must configure real-time monitoring alerts to trigger notifications when delay exceeds the threshold. Fixed field units require format validation rules during the write process to prevent data with invalid units from being stored in the database.
How to set configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
MONGO_CONNECTION_POOL_SIZE | 50–80 | Matches the 15-second write frequency of aerospace equipment data, balances connection count and memory usage based on cluster node count |
MAX_CONCURRENT_REQUESTS | 30–50 | Average single write request latency is under 200ms, prevents request queue backlog from excessive concurrency |
DATA_SYNC_INTERVAL | 86400 seconds | Daily revenue summary data is archived by 02:00 daily, sets sync cycle to ensure data is stored on time |
WRITE_VALIDATION_RULES | Validate equipment_id and collect_time formats | Enforces requirements for unique identifiers and timestamps of aerospace equipment data, prevents invalid data from being written |
MONGO_WRITE_TIMEOUT | 5000 milliseconds | Meets real-time data latency requirement of under 10 seconds, reserves sufficient time for write and network transmission |
DB_BACKUP_CRON | 0 3 * * * | Runs full backup at 03:00 daily, avoids peak business hours |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by data format, volume and business rules. Specific scenarios require individual analysis, and testing on your own samples is recommended before finalizing settings.
Three Common Mistakes
- Symptom:
503 Service Unavailablestatus code appears during concurrent requests, and tool selection logic triggers repeatedly. Cause: TheMAX_CONCURRENT_REQUESTSparameter is not configured correctly, with the concurrency limit set too low, leading to request queue overflow. - Symptom: Database cannot be created after local deployment, and the interface displays the
database connection failederror. Cause: TheMONGO_URIparameter is not configured correctly in environment variables, or the MongoDB service is not started and the corresponding port is not open. - Symptom: As concurrency increases, latency for MongoDB queries and writes exceeds thresholds, and real-time data updates fail. Cause: The
MONGO_CONNECTION_POOL_SIZEsetting is too small, exhausting the connection pool and causing requests to queue, or write timeout alerts are not configured.
How to Verify Successful Configuration
- Check the MongoDB connection pool monitoring dashboard to confirm that current connections do not exceed the configured pool limit. Adjust parameters based on real-time write load.
- Simulate write requests at 15-second intervals, and verify that format validation for the
collect_timeandequipment_idfields takes effect. Invalid data cannot be written to the database. - Trigger the scheduled backup task, confirm that the database backup file is generated successfully, and check that the backup path matches the configured storage path.
- Review system operation logs to confirm that no queue backlog errors appear for concurrent requests, and verify that the
MAX_CONCURRENT_REQUESTSparameter is functioning correctly.
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.