SQLite to Turso migration utility
A focused Node.js migration script for a specific operational need: copy local SQLite data into a cloud-hosted Turso database with a traceable run.
- Runtime
- Node.js
- Source
- Local SQLite
- Destination
- Turso / libSQL
- License
- MIT
What problem does it solve?
A local SQLite database is convenient during early development or for a small installation, but a deployed application may later need a remotely available libSQL-compatible database.
The utility connects to a local SQLite file and a Turso database, creates expected destination tables when configured to do so, then migrates table data with logging. Existing destination rows can be updated with local values.
When it can be useful
This is a repository-level utility, not a hosted upload service. Clone it, review it, and run it in a controlled environment.
Move a prototype into a hosted environment
Transfer the data from a local SQLite-backed application after the deployment architecture changes.
Repeat a controlled migration during development
Use environment-based configuration and logs while validating a destination database before a cutover.
Study a small migration workflow
Inspect how the script connects through sqlite3 and @libsql/client, iterates tables, and handles destination writes.
How the migration works
Configuration is supplied through environment variables for the source database path, Turso URL, authentication token, and log verbosity.
The script reads local SQLite tables and migrates their data to Turso. Table migrations run in parallel. When a required destination table is missing, the repository can use SQL from its initial-table-creation module.
Rows that already exist at the destination can be updated with local data. Because schema and identity rules are application-specific, the code and table-creation definitions should be reviewed before every real migration.
Known limitations
- The repository is a focused script, not a general migration framework or managed service.
- Destination table creation depends on SQL maintained in the project and is not inferred for every possible SQLite schema.
- Parallel table migration can conflict with foreign-key ordering or application-specific dependencies.
- Large databases, unusual SQLite types, triggers, views, indexes, virtual tables, and extensions require separate validation.
- A successful script run does not replace row counts, integrity checks, and application-level verification.
Common mistakes
Running without a tested backup
Preserve the source database and take a destination snapshot or use an isolated destination before the first real run.
Assuming schemas are identical
Review destination table definitions, primary keys, defaults, constraints, and type behavior before copying data.
Ignoring foreign-key order
Parallel migration may need adjustment when parent and child tables must be written in a defined sequence.
Treating logs as validation
A completed run should be followed by counts, checksums where appropriate, integrity checks, and application smoke tests.
FAQ
Questions about the migration utility
Is this a hosted SQLite upload service?
No. It is source code that you clone, review, configure, and run in your own environment.
Does it migrate every SQLite feature?
No. The tool focuses on tables and row data. Application-specific schemas, indexes, triggers, views, extensions, and integrity requirements need separate review.
Will it update rows already in Turso?
The project is designed to update destination rows when a matching row already exists, but you should confirm the key and update behavior for your schema.
What should I verify after migration?
Compare row counts, sample records, constraints, relationships, and application behavior. Keep the source unchanged until the destination has been accepted.