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Couchbase vs TiDB

Couchbase logo

Couchbase

Software

The modern database for enterprise applications

From
Free
Rated
-
Full reviewWebsite
TiDB logo

TiDB

Software

Open source distributed HTAP database for elastic scale and real-time analytics

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Couchbase the free tier is a single node with 8 GB of storage and forum support only; TiDB not 100% MySQL-compatible, requiring verification before migration
  • They diverge on capability: Couchbase covers JSON Document Model, TiDB covers MySQL Compatible.

Where they differ

Only the attributes on which Couchbase and TiDB actually diverge.

Attributes where Couchbase and TiDB differ
AttributeCouchbaseTiDB
PlatformsLinux, Windows, Mac, Docker, WebCloud, AWS, Azure, Google Cloud Platform, Self-managed
Founded20112015

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Couchbase

  • JSON Document Model
  • SQL++ Query
  • Full-text Search
  • Eventing
  • Analytics
  • Mobile Sync
  • Multi-dimensional Scaling
  • Kubernetes

Only in TiDB

  • MySQL Compatible
  • HTAP Workloads
  • Horizontal Scaling
  • Strong Consistency
  • High Availability
  • Real-time Analytics
  • Elastic Scaling
  • MySQL

Both cover

  • Kafka
  • Spark
  • Linux support
  • Docker support
  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Couchbase

  • Running a distributed NoSQL document database as a managed servicenot TiDB
  • Mobile sync and offline first applications backed by a cloud databasenot TiDB

TiDB

  • Transaction processingnot Couchbase
  • Data storagenot Couchbase
  • Application backendnot Couchbase
  • Reportingnot Couchbase
  • Data analyticsnot Couchbase

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Couchbase

  • The free tier is a single node with 8 GB of storage and forum support only
  • Node rates are hourly and quoted as starting figures, from $0.15 an hour on Basic to $0.49 on Enterprise
  • The Developer Pro and Enterprise plans require 3 nodes, so the hourly rate multiplies before any usage
  • Backup storage is billed separately at $0.07 per GB a month, and analytics backups at $0.14
  • Support response time is a plan feature, at 8 hours on Developer Pro against 30 minutes on Enterprise
  • AI and analytics run as separately priced planes at up to $0.86 an hour per node

TiDB

  • Not 100% MySQL-compatible, requiring verification before migration

Pricing, plan by plan

Couchbase

Free
  • CommunityFree
    • Full features
    • Community support
    • Self-managed
  • Capella FreeFree
    • Managed service
    • Limited resources
    • Cloud hosted

TiDB

Free
  • ServerlessFree
    • 5GB storage
    • 50M request units
    • Free forever tier
  • Dedicated$250/month
    • Dedicated resources
    • SLA guarantees
    • Enterprise support

Which should you pick?

Choose Couchbase if

  • You need json document model.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Docker, Web.
  • You also want sql++ query.
Couchbase review

Choose TiDB if

  • You need mysql compatible.
  • You want to start without paying.
  • You work on Cloud, AWS, Azure, Google Cloud Platform, Self-managed.
  • You also want htap workloads.
TiDB review

Questions people ask

Is Couchbase or TiDB better?
Neither clearly leads. Couchbase starts at Free and TiDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Couchbase or TiDB?
Couchbase starts at Free and TiDB at Free.
Does Couchbase or TiDB run on more platforms?
Couchbase runs on Linux, Windows, Mac, Docker, Web. TiDB runs on Cloud, AWS, Azure, Google Cloud Platform, Self-managed.
Can I use Couchbase for free?
Both have a free tier, so you can try either at no cost before committing.
What is Couchbase best used for?
Couchbase is most often used for running a distributed nosql document database as a managed service, mobile sync and offline first applications backed by a cloud database. Of those, running a distributed nosql document database as a managed service and mobile sync and offline first applications backed by a cloud database are not what TiDB is typically brought in for.
What can Couchbase do that TiDB cannot?
Couchbase covers JSON Document Model, SQL++ Query, Full-text Search, Eventing. TiDB covers MySQL Compatible, HTAP Workloads, Horizontal Scaling, Strong Consistency. Both handle Kafka, Spark, Linux support, Docker support.

Answered from the vendors’ own pages

TiDB: Is TiDB MySQL-compatible?

Yes, TiDB speaks the MySQL protocol, so existing MySQL clients, ORMs, and drivers work without modification. However, TiDB is not 100% MySQL-compatible.

Source
TiDB: How does TiDB scale?

TiDB provides automatic horizontal scaling with compute and storage scaling independently. It splits compute (TiDB servers) from storage (TiKV) to allow adding nodes without data replication.

Source
TiDB: Does TiDB support analytics workloads?

Yes, TiDB is an HTAP database with TiFlash columnar engine providing analytics capabilities alongside transactional processing on the same data without separate pipelines.

Source
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