What is Chunked Inserts?
Splitting large seed or import batches into bounded chunks that respect statement and payload limits. D1-backed seeding fails on giant multi-row inserts; a few hundred rows per batch sails through.
Related terms
FK-Ordered Seeding
Inserting seed rows parent-first so every foreign key finds its target: users before projects, projects before messages. BYOB seeds run in dependency order with ids captured per step for child inserts.
Seed Data & Fixtures
Realistic demo rows loaded in foreign-key order, chunked to respect limits. Good seeds make every preview feel like a real product on first load.
Cloudflare D1 Database
SQLite at the edge: a relational database replicated near users with SQL semantics developers already know. BYOB DB provisions one per project with schema viewing and SQL inspection.
B-Tree Index
The default balanced-tree structure making equality and range lookups fast without scanning every row. Add one where queries filter, join, or sort — then confirm with EXPLAIN before assuming victory.
Composite Index
One index spanning several columns for queries that always filter them together, ordered most-selective first. A three-column composite beats three single-column indexes on the same query shape.
Partial Index
An index covering only rows matching a predicate, such as live subscriptions where status is active. Smaller, faster, and cheaper to maintain than indexing rows queries never touch.