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PolarDB-X vs Vitess

PolarDB-X: Alibaba's open-source, MySQL-compatible shared-nothing distributed SQL with Paxos and columnar indexes. Vitess: CNCF-graduated sharding and clustering layer that makes a fleet of MySQL servers look like one database.

key differences

  • Vitess is built for larger datasets (Multi-PB) than PolarDB-X (≤ 1 PB).
  • Transactions: PolarDB-X offers full ACID; Vitess offers limited.
  • Only PolarDB-X has stored procedures, ttl / expiry, columnar storage, encryption at rest, time travel.
  • Only Vitess has full-text search, materialized views.

choose polardb-x for

  • +Scaling large MySQL e-commerce databases
  • +High-concurrency order and payment systems
  • +Consolidating sharded MySQL into one logical database
  • +Operational analytics via columnar indexes

best at · OLTP, HTAP, Real-time analytics

choose vitess for

  • +Scaling a large MySQL application beyond one primary
  • +Multi-tenant SaaS sharded by customer
  • +Consolidating many MySQL databases under one routing layer
  • +Zero-downtime schema migrations on huge tables

best at · OLTP, Metadata, Content

PolarDB-XAlibaba's open-source, MySQL-compatible shared-nothing distributed SQL with Paxos and columnar indexes.
VitessCNCF-graduated sharding and clustering layer that makes a fleet of MySQL servers look like one database.
overview
Primary model
Relational
Relational
Also supports
Document, Columnar / OLAP
Document
Type
Database engine
Database engine
Status
Active
Active
Developer
Alibaba Cloud
Vitess Authors (CNCF; maintained largely by PlanetScale)
First release
2021
2012
Latest version
5.4.21 (Sep 20, 2026)
24.0.5 (Oct 13, 2026)
License
Open source (permissive)Apache License 2.0
Open source (permissive)Apache License 2.0
Free tier
—
✓
popularity
WhichDB Score
5.0
21.2
Rank
#391
#142
GitHub stars
1.7K
21.4K
Stack Overflow questions
–
54
scale & guarantees
Comfortable data size
Large (≤ 1 PB)
Massive (Multi-PB)
Horizontal scaling
Native
Native
Multi-region
Read replicas
Read replicas
ACID
Full
Limited
Consistency
Strong
Strong, Eventual
Schema
Strict
Strict
Architecture
Distributed, Client server
Distributed, Primary replica, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
✓
—
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
Alibaba Cloud
–
capabilities
Transactions
✓
✓
Joins
✓
✓
Secondary indexes
✓
✓
Full-text search
—
✓
Vector search
—
—
Geospatial
—
—
JSON
✓
✓
Change data capture
✓
✓
Triggers
—
—
Stored procedures
✓
—
Materialized views
—
✓
TTL / expiry
✓
—
Pub/Sub
—
—
Columnar storage
✓
—
In-memory
—
—
Durable persistence
✓
✓
Compression
✓
✓
Encryption at rest
✓
—
Role-based access
✓
✓
Time travel
✓
—
Branching
—
—
Online schema changes
✓
✓
Streaming ingest
—
—
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
SQL
SQL
Client languages
Java, Python, Go, PHP, JavaScript
Java, Go, Python, JavaScript, PHP, Ruby, C#
Best for
OLTP, HTAP, Real-time analytics
OLTP, Metadata, Content
Add more to this comparisonNot sure either fits? Try smart match

PolarDB-X vs Vitess: FAQ

What is the difference between PolarDB-X and Vitess?

PolarDB-X: Alibaba's open-source, MySQL-compatible shared-nothing distributed SQL with Paxos and columnar indexes. Vitess: CNCF-graduated sharding and clustering layer that makes a fleet of MySQL servers look like one database. Vitess is built for larger datasets (Multi-PB) than PolarDB-X (≤ 1 PB). Transactions: PolarDB-X offers full ACID; Vitess offers limited. Only PolarDB-X has stored procedures, ttl / expiry, columnar storage, encryption at rest, time travel.

When should I choose PolarDB-X over Vitess?

Choose PolarDB-X for scaling large MySQL e-commerce databases; high-concurrency order and payment systems; and consolidating sharded MySQL into one logical database. Choose Vitess for scaling a large MySQL application beyond one primary, multi-tenant SaaS sharded by customer and consolidating many MySQL databases under one routing layer.

Is PolarDB-X or Vitess more popular?

Vitess ranks #142 on the WhichDB Score (21.2/100) and PolarDB-X ranks #391 (5.0/100). Popularity is not fit: check the requirements that matter for your project.

Are PolarDB-X and Vitess open source?

Yes. PolarDB-X is open source. License: Apache License 2.0. Yes. Vitess is open source. License: Apache License 2.0.