MySQL vs MariaDB
Compare two related SQL databases without assuming modern versions are interchangeable.
Which database fits the application?
Choose from the versions your application and hosting provider explicitly support. MySQL and MariaDB share a history and compatible client workflows in many cases, but their modern features and behaviour have diverged. MariaDB can be a sensible supported platform choice; it should not be purchased on a promise of universal drop-in compatibility.
Seven differences that change the shortlist
| Buying question | MySQL | MariaDB |
|---|---|---|
| Shared history | Original MySQL database product family | A MySQL-derived SQL database with its own development path |
| Community access | GPL Community Edition | GPLv2 Community Server |
| Commercial purchase | Oracle commercial editions and support | MariaDB enterprise subscriptions and services |
| Client compatibility | Native MySQL drivers and client ecosystem | Many MySQL-compatible clients; verify the selected driver |
| Modern SQL behaviour | Version-specific MySQL behaviour | Version-specific differences from modern MySQL |
| Document requirements | Native JSON implementation | JSON functionality with different implementation details |
| Migration risk | A MariaDB-to-MySQL move needs testing | A MySQL-to-MariaDB move needs testing |
Four worked buying briefs
These are hypothetical scenarios with explicit assumptions. They do not establish equal capabilities, measured usability or a negotiated price.
| Migration area | Evidence to collect | Acceptance condition |
|---|---|---|
| SQL behaviour | Queries, routines, triggers and SQL modes | Critical results reconcile on the target |
| Connections | Drivers, authentication and service accounts | Every application component connects correctly |
| Operations | Backup, restore and replication rehearsal | Recovery and cutover are demonstrated |
| Support | Application and provider version matrix | The target is supported for the planned lifetime |
Hosting renewal
The host offers a MariaDB database instead of MySQL; can the site move?
MySQL: Record the current MySQL version, SQL mode and application support requirements.
MariaDB: Ask for the target MariaDB version and run the application’s integration suite there.
Proposed pass condition: checkout, scheduled tasks and administration all work with reconciled records.
Authentication change
Will every application and backup tool connect after the move?
MySQL: Inventory authentication plugins and account configuration on the MySQL source.
MariaDB: Check supported authentication and connector behaviour on the MariaDB target.
Do not treat a successful administrator login as proof that every service account will work.
Document-heavy application
Do existing JSON operations behave as the application expects?
MySQL: Capture sample MySQL JSON queries, indexes and validation assumptions.
MariaDB: Reproduce those operations in the intended MariaDB version and inspect results.
Use nested values, nulls and updates from real fixtures; this is a compatibility brief, not a speed contest.
Support-led production estate
Which team owns incidents and release upgrades?
MySQL: Ask Oracle or the hosting provider to scope the MySQL edition and support coverage.
MariaDB: Ask the MariaDB supplier to scope Server, enterprise components and response coverage.
Get the same hours of coverage, recovery target and upgrade responsibilities in both proposals.
Build a compatibility inventory
Start from what is installed rather than the names on the homepage. Record database versions, tables, routines, triggers, event jobs, character sets, collations and SQL modes. Include the tools that do not sit in the main application repository, such as reporting exports and backup agents.
Then run a representative staging copy on the target. Compare important business totals and edge cases, not just whether the home page loads. If a supplier calls the change straightforward, ask it to name the features and versions for which that assessment applies.
Price the migration and the rollback
A lower subscription line is only one part of a switch. Estimate query changes, connector updates, data-copy time and release testing, then decide how long writes can be paused. Give an owner to every step of the cutover.
Keep rollback criteria measurable: failed reconciliation, an unsupported driver or a missed recovery target should stop the move. Test how new writes would be recovered if the target must be abandoned after launch. A backup taken before cutover is helpful, but it does not by itself solve that reconciliation problem.
Questions before you choose
Is MariaDB a drop-in replacement for MySQL?
Not universally. Shared origins and protocol compatibility help, but modern releases differ. Validate the exact source and target versions and the features your application uses.
Are both community databases free?
MySQL Community Edition is GPL software and MariaDB Community Server is GPLv2 software. Enterprise components, managed hosting and commercial support have separate terms.
Can I reuse every MySQL tool with MariaDB?
Many compatible tools can connect, but verify authentication, version support and the operations each tool performs. A successful connection alone does not establish full compatibility.
Which is faster?
This comparison does not establish a performance winner. Test the intended queries, indexes, data and hardware against your own service target.
Turn the comparison into your own evaluation
Use the same criteria and priorities for both products, keep unknowns unassessed and record the plan and evidence behind your ratings.
Build a MySQL vs MariaDB scorecard →Keep the assumptions with the figures
Use the date, billing cycle, units and limits with each example. Check current account terms before purchasing. Unverified prices and model costs stay unpriced.
Download the buying examples as JSON ↓Share the comparison
Use these examples when discussing the shortlist with your team.