What the Data for This Category Looks Like
Business data for the basic chemical continuous production category comes from DCS/SIS systems, online analyzers, LIMS systems, equipment condition monitoring modules, energy metering devices, and raw material tank account books. Daily associated documents include operating procedures, process index cards, DCS trend charts, laboratory reports, interlock bypass records, special work permits, and shift logs. Data update frequencies are divided into real-time (e.g., DCS measurement point values), per-shift (e.g., shift logs and work permits), and daily (e.g., laboratory summaries and energy consumption reports). Document fields include units for process parameters such as temperature, pressure, and flow, as well as exclusive identifiers such as interlock numbers and bypass duration.
What Constraints Do These Characteristics Impose on Deployment and Upgrade?
The multi-source real-time and timed data, multiple types of structured and unstructured documents, and high-risk business attributes of this category impose multiple constraints on the deployment and upgrade process. It is necessary to connect to multiple industrial system interfaces such as DCS/SIS and LIMS, adapt data synchronization logic for different update frequencies, and avoid interrupting the real-time data flow required for stable production. The knowledge base must support parsing exclusive document formats such as process index cards and interlock bypass records, and match industry-specific field and unit rules. A business interruption buffer window must be reserved during deployment and upgrade to prevent interlock alarms or data loss triggered by configuration changes.
How to Set the Configuration
These configuration guidelines apply to FastGPT v4.17.0.
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
DB_MAX_LINK | 100–200 connections | Adapt to concurrent requests from DCS real-time data streams, avoid exhausting database connections |
MONGODB_URI | Point to a locally deployed MongoDB instance, set connection timeout to 30 seconds | Store unstructured documents and historical Q&A data, adapt to batch data writes updated per shift or daily |
REDIS_URL | Configure memory eviction policy as allkeys-lru, set expiration time to 600 seconds | Cache real-time DCS measurement point data and popular Q&A results, reduce real-time query latency |
STORAGE_S3_ENDPOINT | Point to the enterprise’s internal object storage endpoint | Store large documents such as DCS trend charts and laboratory reports, adapt to batch data upload requirements |
FE_DOMAIN | Configure as the enterprise’s internal access domain name | Limit front-end access scope, avoid unauthorized external access, align with industrial scenario security requirements |
Three Common Misconfigurations
- Symptom: A network error with status code 502 is returned after creating and deleting an application. Cause:
FE_DOMAINand the back-end service’s cross-origin whitelist are not configured correctly, preventing front-end requests from being properly routed to back-end interfaces. - Symptom: After uploading documents such as interlock bypass records, no corresponding field information appears in search results. Cause: Exclusive field parsing rules for documents are not adapted, and knowledge base chunking does not retain key identifiers such as interlock numbers and bypass duration.
- Symptom: Real-time DCS data synchronization delay exceeds the preset duration, and corresponding inspection Q&A is not triggered. Cause: The expiration time configured in
REDIS_URLis too long, causing cached data to not update in a timely manner, orDB_MAX_LINKis set too low, exhausting the database connection pool and failing to process synchronization requests.
How to Verify Successful Configuration
- Initiate concurrent database requests up to the
DB_MAX_LINKlimit, confirm no connection errors or timeouts occur. - Upload a process index card document, perform a search operation, confirm the results include matching content for industry-specific fields such as temperature and pressure.
- Configure a real-time data synchronization task, check back-end logs to confirm DCS measurement point data is written to storage at the preset interval.
- Access the front-end address bound to
FE_DOMAIN, log in and perform operations to create and delete applications, confirm no network-related errors occur.
The values provided are common starting points and should be measured against the reader's own samples.