WEBINAR
FanDuel reports migrating their ledger system from MySQL to CockroachDB was “actually super simple.” Since the move, operations have become easier, they can scale seamlessly with increasing traffic, and they’re confident their platform will remain always available to users.
They are one of hundreds of customers to successfully migrate to CockroachDB.
Meet your migration assistant.
Every migration is unique, with its own schema quirks, risks, and application needs. The Migration Assistant reduces manual effort and guesswork in planning and execution.
MOLT: CockroachDB’s Migration Toolkit
If a hands-on approach to migrations is more your speed, use our MOLT (Migrate Off Legacy Technology) toolkit. It integrates schema conversion, distributed data loading, continuous replication, and row-level validation into a flexible, configurable workflow.
MOLT CONVERT — Schema conversion:
Turn your legacy schema into CockroachDB-compatible PostgreSQL automatically. MOLT Convert parses your source schema and maps it to CockroachDB-compatible DDL. It identifies unimplemented features, rewrites unsupported syntax, applies CockroachDB schema best practices, and surfaces incompatibilities before they become blockers.
Supports PostgreSQL, MySQL, Oracle, and SQL Server
Summary Report with required fixes, compatibility notes, and suggestions
Available in CockroachDB Cloud Console
MOLT FETCH — Data migration:
Move your data, at scale, with confidence, and with a safety net. MOLT Fetch handles the heavy lifting of data migration. It exports concurrently from multiple tables and shards, stages data via cloud storage or direct copy, and includes a checkpoint so interrupted migrations pick up exactly where they left off.
concurrent export from multiple source tables and shards
data movement via AWS S3, GCP GCS, local file servers, or direct copy
exception logging for full visibility into any errors
available as a standalone CLI tool, downloadable binary, or Docker image.
MOLT REPLICATOR — Continuous replication:
(Continuous Replication)
Keep your source database running while you migrate, then cut over when you're ready.
For teams that can't afford downtime, MOLT Replicator streams ongoing changes from your source database to CockroachDB in real time. After the initial bulk load, replication keeps both systems in sync. When you're ready to cut over, writes are paused only briefly (seconds to minutes, not hours).
And if you need to roll back? Failback support syncs changes from CockroachDB back to your original source so you can retry with zero data loss.
minimal-downtime migrations with continuous CDC-based replication
failback support for safe recovery
supports PostgreSQL, MySQL, and Oracle sources
available as a standalone CLI tool, downloadable binary, or Docker image
MOLT VERIFY — Data Validation:
Know your migration is complete and accurate. MOLT Verify connects to both your source and target databases and performs a systematic comparison between table structure, column definitions, and row-level data to confirm your migration is accurate before you cut over.
validates billions of records systematically and efficiently
flags schema drift, type conversion issues, and data discrepancies
supports PostgreSQL, MySQL, and Oracle sources
available as a standalone CLI tool, downloadable binary, or Docker image
Move with as much help as you need.
Whether you want full control or a team to own the outcome, we have a migration service model built for you.
Advisory
Includes a migration plan review and remote guidance from Cockroach Labs migration engineers throughout your cutover window. You own the execution and we make sure the plan is solid.
Best for: Teams that want to lead their own migration with expert guidance available when it matters.
Embedded
Includes a part-time embedded Enterprise Architect, scoped planning support, and structured office hours. You learn as you go with a dedicated expert by your side.
Best for: Teams that want expert support throughout the migration while building internal CockroachDB expertise.
Enterprise
A fully-scoped, milestone-driven migration delivery with hands-on support from Cockroach Labs engineers. We handle everything from planning to cutover with clear accountability at every stage.
Best for: Teams that want Cockroach Labs to help own the outcome.
Migration Partners
Your next database can start with a plan.