What this category's data looks like
Data sources for infrastructure engineering investment research in the financial industry include bidding announcements, project cost estimates, construction logs, material price ledgers, supervision reports, completion settlement documents, and more. Update cadences vary by data type: bidding announcements are updated in real time as they are published, construction logs are updated daily, material price ledgers are updated weekly or monthly, and completion documents are archived after project completion.
Document structures include fields such as project number, construction location, estimated cost, construction period, material list, and participating units. Units cover professional engineering units including RMB yuan, days, square meters, cubic meters, and others. The size of individual documents varies widely.
Constraints these characteristics create for database and operations workflows
Multi-source heterogeneous data sources require databases to support multi-table joins and cross-data source synchronization, eliminating data silos. Differentiated incremental synchronization strategies must be configured for different update cadences, balancing real-time performance and database load. Long documents and multi-field structures require databases to support large field storage and professional field validation, preventing dirty data from entering the knowledge base. Large volumes of historical project data also require databases to support partitioned storage, avoiding excessive single-table data volume that impairs query performance, to meet historical data backtracking needs for investment research scenarios.
Configuration guidelines
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
DB_MAX_CONNECTIONS | 20-30 | Infrastructure engineering investment research frequently runs multi-table join queries. Too low a connection count causes query queuing, while too high a count increases database load pressure |
TEXT_INDEX_CONFIG | pg_trgm + industry-specific thesaurus | Infrastructure engineering contains a large number of technical terms. General full-text indexes cannot match these terms accurately. pg_trgm supports fuzzy matching and can load industry-specific thesauruses |
SYNC_INTERVAL | 300 seconds | Bidding announcements have high real-time requirements, while construction logs are updated daily. This synchronization interval balances real-time performance and database load |
PARSE_FILE_MAX_SIZE | 200 MB | Individual files such as project cost estimates and completion reports for infrastructure engineering are large, requiring adaptation to long-document parsing requirements |
RECALL_TOP_K | Top 10 entries | Investment research requires multi-dimensional reference to engineering data from different sections and periods. Excessive recall increases context redundancy |
The parameter values provided on this page are all conventional recommendations used as starting points for configuration. Actual values are affected by material form, data volume and business rules. Specific issues require specific analysis, and testing on local samples is recommended before finalizing.
Three common mistakes
- Phenomenon: An error
text index required for $text queryis triggered during full-text retrieval. Cause: A dedicated full-text index for infrastructure engineering technical terms is not configured, and only the default general-purpose index is used. - Phenomenon: Database connection fails after a version upgrade. Cause: Snapshots of incremental synchronized project data were not backed up in advance, and the encrypted configuration of the connection string was not retained during the upgrade process. This applies to upgrade scenarios for FastGPT 4.8.9 and above.
- Phenomenon: The number of query return results does not match expectations. Cause: Query join fields were not adjusted according to the multi-table join characteristics of infrastructure engineering, leading to the recall of redundant data.
How to confirm the configuration is complete
- Execute a database index query statement to confirm that a full-text index matching infrastructure engineering technical terms has been created.
- Check the incremental synchronization log to confirm that the latest project announcement data has been updated according to the configured synchronization interval.
- Upload an engineering document that meets the configured size limit to confirm that the parsing task is completed within the configured timeout period.
- Initiate a multi-condition join query to confirm that the returned results include the configured join field data.
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.