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Scheduling Embedding Updates

When the source text data is updated, how and when the embeddings are updated is determined by the value set to the schedule parameter in vectorize.table and vectorize.init_rag.

The default behavior is schedule => '* * * * *', which means the background worker process checks for changes every minute, and updates the embeddings accordingly. This method requires setting the updated_at_col value to point to a colum on the table indicating the time that the input text columns were last changed. schedule can be set to any cron-like value.

Alternatively, schedule => 'realtime creates triggers on the source table and updates embeddings anytime new records are inserted to the source table or existing records are updated.

Statements below would will result in new embeddings being generated either immediately (schedule => 'realtime') or within the cron schedule set in the schedule parameter.

INSERT INTO products (product_id, product_name, description)
VALUES (12345, 'pizza', 'dish of Italian origin consisting of a flattened disk of bread');

UPDATE products
SET description = 'sling made of fabric, rope, or netting, suspended between two or more points, used for swinging, sleeping, or resting'
WHERE product_name = 'Hammock';