What the data for this category looks like
Daily documents for this category include maintenance plans, patrol logs, defect disposal notices, road construction permits, and road property damage compensation forms. Fields cover road segment identifiers, defect types, disposal time limits, compensation amounts, and more. Data mainly comes from highway maintenance management systems, bridge and tunnel monitoring systems, road patrol systems, and traffic flow monitoring data. The update frequency is daily. Most document structures use structured forms, while some patrol logs are unstructured text. Document generation combines structured fields and natural language content.
Constraints imposed by these characteristics during deployment and upgrade
Daily updated data for this category mixes structured and unstructured data. Deployments must support configuration for high-frequency incremental data synchronization, to avoid excessive server resource usage from full synchronization. Multi-source system data requires multiple data source connection configurations, to ensure field formats from different systems can be uniformly parsed and avoid missing fields in generated documents. Documents such as road construction permits and compensation forms have strong compliance requirements. Deployments must reserve extended space for field verification, to ensure generated content meets business specifications. During upgrades, data synchronization links must remain uninterrupted, to avoid delays in daily maintenance document generation caused by version updates.
How to set configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
PG_URL | postgresql://username:password@localhost:5432/fastgpt?pool_max=25 | This category produces multiple structured documents daily. Sufficient database connection pools are needed to handle concurrent document generation and data synchronization requests |
REDIS_URL | redis://:yourpassword@localhost:6379/0?maxmemory-policy=allkeys-lru | Used to cache frequently queried results of patrol logs and defect data, reducing pressure on the backend database |
DB_MAX_LINK | 20–30 | Matches the database connection pool configuration, to avoid exhausting database connection resources from concurrent requests |
STORAGE_S3_ENDPOINT | Fill in according to local storage or cloud storage service provider addresses | Used to store generated electronic and scanned paper documents such as road construction permits and compensation forms |
FILE_TOKEN_KEY | Random 32-bit string generated per business security requirements | Used to sign document download links, preventing unauthorized access to sensitive road management documents |
Three common mistakes
- Scenario: After local Docker deployment, the PostgreSQL container exits abnormally every few hours. Recovery requires deleting the container and redeploying. Cause: No reasonable value set for
DB_MAX_LINK. Concurrent document generation and data synchronization requests exhaust the database connection pool, and container resources are fully occupied leading to a crash. - Scenario: After directly upgrading from an old version to FastGPT v4.17.0, the field settings for road construction permit generation templates do not take effect. Cause: Configuration migration was not completed per the version upgrade instructions. The old template's field mapping rules do not adapt to the format requirements of the new version.
- Scenario: Generated road property damage compensation forms do not automatically associate with the latest traffic flow monitoring data. Cause: No synchronization trigger logic configured for multiple data sources. Data from non-maintenance systems is not synchronized to the vector database in real time, and expired data is used for document generation.
How to confirm configurations are correct
- Log in to the FastGPT backend system status panel, check the database connection count, and confirm it does not exceed the
DB_MAX_LINKconfiguration value. - Manually trigger a patrol log document generation task, and check if the generated document includes preset business fields such as road segment number and defect location.
- View the storage directory or cloud storage console, and confirm that generated road construction permit documents have been successfully uploaded and valid access links have been created.
- Wait one hour and check the data synchronization logs, and confirm that incremental synchronization of multi-source maintenance data has been completed.
The values given are common starting points and should be measured against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.