What the data for this category looks like
Data related to snack food profit yields comes from offline supermarket POS systems, dealer inventory and sales ERP systems, e-commerce platform sales APIs, and raw material procurement quotation platforms. Update frequencies vary: e-commerce terminal sales data updates hourly. Offline POS and dealer data updates daily or weekly. Each data entry uses structured JSON or CSV format. It includes fields such as sku_id, batch_no, purchase_price, retail_price, sales_volume, region, and stat_date. Price fields use units of yuan per package or yuan per kilogram. Sales volume fields use units of pieces or kilograms.
Constraints on database and operations work
Multi-source heterogeneous data sources require the database to support multi-protocol synchronization. It must be compatible with CSV exports from POS systems, ERP APIs, and real-time data streams from e-commerce platforms. Mixed update frequencies require layered scheduling for database operations configurations. This distinguishes processing priorities between real-time and batch data. A large number of frequently updated SKUs requires database tables to support partitioning by stat_date. This avoids excessive single-table data volume that causes query delays. Sales data from different regions must be stored split by region. This reduces the scan range for individual queries and improves the efficiency of profit yield calculations.
How to set the configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
DB_POOL_MAX_SIZE | 20–30 | Matches the concurrency requirements of multi-source data synchronization. Snack food has a large number of SKUs, leading to higher concurrent read and write request volumes |
SYNC_TASK_INTERVAL | 300 seconds | Balances synchronization latency for hourly e-commerce data and daily offline data, while avoiding excessive resource usage |
DB_TABLE_PARTITION_KEY | stat_date | Partitions by statistical date, adapting to business scenarios where profit yield data is queried by cycle and improving query efficiency |
PLUGIN_DB_CONN_TIMEOUT | 15 seconds | Adapts to connection latency across multiple data sources, avoiding long waits that block workflow processes |
DB_BACKUP_CRON | 0 2 * * * | Runs backups at 2:00 AM daily, avoiding peak business hours and ensuring data security |
RECALL_DB_FRAGMENT_LENGTH | 800–1200 characters | Matches the length of individual snack food data records, ensuring that recalled database fragments fully contain SKU and cycle information |
The parameter values provided on this page are standard recommended starting points for configuration. Actual values are affected by data format, volume, and business rules. Each scenario requires specific analysis, and it is recommended to test on your own samples before finalizing settings.
Three common mistakes
- Symptom: After connecting a MySQL data source, the large language model output does not include database source text fragments, and only returns summarized conclusions. Cause: The
RECALL_DB_FRAGMENT_LENGTHparameter is not configured, or its value is set too small, causing recalled source text fragments to be truncated and unrecognizable for reference by the large language model. - Symptom: Every request in a conversation triggers a full database query, and historical query results are not reused. Cause: The
DB_QUERY_CACHE_TTLparameter is not configured, or its value is set to 0, causing the caching mechanism to fail and repeatedly occupying database resources. - Symptom: An
ORA-01017error occurs after configuring an Oracle database connection plugin. Cause: The correct service name is not specified in the plugin configuration, or database port access permissions are not enabled, causing connection verification to fail.
How to confirm the configuration is complete
- Log in to the database management panel, check if new partitions are automatically created for tables partitioned by
stat_date, to verify that the partitioning configuration is active. - Submit a query request that includes a specified
sku_idandstat_date, check if the returned results contain complete database source text fragments, to verify that the recall configuration is correct. - Test the connection to the Oracle database plugin, check if the interface displays a successful connection with no
ORA-01017or similar error prompts, to verify that the plugin configuration is correct. - View the system monitoring panel, confirm that the active connection count of the database connection pool does not exceed the value set for
DB_POOL_MAX_SIZE, to verify that the connection pool 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.