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Databases & messaging · #knexjs
Knex.js savepoints let you roll back part of a transaction without aborting the whole batch. Learn the API, MySQL/PostgreSQL differences, and a concrete batch-insert pattern that skips bad rows while keeping good ones.
Learn how to paginate efficiently in Knex.js using limit/offset with a separate count query, why deep offsets hurt performance, and how to switch to keyset pagination for large datasets.
Compare Knex.js CLI vs programmatic migrations for production: concurrency safety, rollback, timeout handling, and a concrete validation script you can run today.
When a series of DB operations must either all succeed or fail together, Knex.js transactions with nested savepoints let you roll back only the failed part without discarding earlier work. This guide walks through the pattern, shows a concrete example, and highlights trade‑offs.
Use Knex transactions to keep related writes atomic, pass the transaction object to every query, and watch your connection pool.
Learn how to use Knex.js transactions with async/await, create nested savepoints for partial rollbacks, and build a reliable user‑registration flow that rolls back entire or partial changes on error.
Learn how to implement offset‑based pagination in Knex.js with a reusable helper, see a concrete example, and understand the performance trade‑offs.
Learn why using the top-level Knex instance inside a transaction callback breaks rollback, see the correct pattern, and understand limits like connection‑pool exhaustion and savepoint behavior.
Learn how to wrap related Knex.js queries in a transaction callback so updates commit together or roll back as a unit, with a worked account-transfer example and pool-safety tips.
mysql
postgresql
nodejs