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DynamoDB vs YugabyteDB

DynamoDB logo

DynamoDB

Software

Fast, flexible NoSQL database service for any scale

From
On request
Rated
-
Full reviewWebsite
YugabyteDB logo

YugabyteDB

Software

Open source distributed SQL database for cloud native apps

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only YugabyteDB has a free tier, so it costs nothing to try first.
  • Each has a real cost: DynamoDB noSQL-only; does not support complex relational queries or SQL joins; YugabyteDB missing PostgreSQL functions and extensions despite claiming compatibility
  • They diverge on capability: DynamoDB covers Single-digit Millisecond Latency, YugabyteDB covers PostgreSQL Compatible.

Where they differ

Only the attributes on which DynamoDB and YugabyteDB actually diverge.

Attributes where DynamoDB and YugabyteDB differ
AttributeDynamoDBYugabyteDB
Starting priceOn requestFree
Pricing modelusage-basedUnknown
Free tierNoYes
PlatformsAWSCloud, On-premises, Kubernetes
Founded20062016

Identical on both: 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 DynamoDB

  • Single-digit Millisecond Latency
  • Serverless
  • Auto-scaling
  • Global Tables
  • Point-in-time Recovery
  • Encryption
  • Streams
  • Lambda

Only in YugabyteDB

  • PostgreSQL Compatible
  • Distributed SQL
  • Geo-distribution
  • Linear Scalability
  • High Availability
  • ACID Transactions
  • CDC Support
  • PostgreSQL

Both cover

  • Web support

What people use each for

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

DynamoDB

  • High-scale, variable-workload applicationsnot YugabyteDB
  • Mobile and IoT device backendsnot YugabyteDB
  • Real-time analytics and dashboardsnot YugabyteDB
  • Multi-region, globally distributed applicationsnot YugabyteDB

YugabyteDB

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

Where each one falls short

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

DynamoDB

  • NoSQL-only; does not support complex relational queries or SQL joins
  • Limited query flexibility; requires thinking in terms of keys and indexes rather than ad-hoc queries

YugabyteDB

  • Missing PostgreSQL functions and extensions despite claiming compatibility
  • Not a true PostgreSQL replacement requiring schema and query compatibility testing before migration
  • Requires careful isolation level management or risk data corruption in production
  • Lacks built-in OLAP capabilities, requiring external systems for analytics
  • Coupled compute and storage scaling reduces optimization flexibility

Pricing, plan by plan

DynamoDB

On request

No published plan breakdown. See the DynamoDB review.

YugabyteDB

Free

No published plan breakdown. See the YugabyteDB review.

Which should you pick?

Choose DynamoDB if

  • You need single-digit millisecond latency.
  • You work on AWS.
  • You also want serverless.
DynamoDB review

Choose YugabyteDB if

  • You need postgresql compatible.
  • You want to start without paying.
  • You work on Cloud, On-premises, Kubernetes.
  • You also want distributed sql.
YugabyteDB review

Questions people ask

Is DynamoDB or YugabyteDB better?
Neither clearly leads. DynamoDB starts at On request and YugabyteDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, DynamoDB or YugabyteDB?
YugabyteDB has a free tier; the other does not. Paid plans start at On request for DynamoDB and Free for YugabyteDB.
Does DynamoDB or YugabyteDB run on more platforms?
DynamoDB runs on AWS. YugabyteDB runs on Cloud, On-premises, Kubernetes.
Can I use YugabyteDB for free?
Yes. YugabyteDB has a free tier, so you can try it without paying. DynamoDB starts at On request.
What is DynamoDB best used for?
DynamoDB is most often used for high-scale, variable-workload applications, mobile and iot device backends, real-time analytics and dashboards, multi-region, globally distributed applications. Of those, high-scale, variable-workload applications and mobile and iot device backends are not what YugabyteDB is typically brought in for.
What can DynamoDB do that YugabyteDB cannot?
DynamoDB covers Single-digit Millisecond Latency, Serverless, Auto-scaling, Global Tables. YugabyteDB covers PostgreSQL Compatible, Distributed SQL, Geo-distribution, Linear Scalability. Both handle Web support.

Answered from the vendors’ own pages

YugabyteDB: Is YugabyteDB a true drop-in replacement for PostgreSQL?

No, YugabyteDB is PostgreSQL-compatible but not a zero-change drop-in replacement. It requires compatibility testing with queries, stored procedures, and ORM configurations before migration.

Source
YugabyteDB: What isolation levels does YugabyteDB support?

YugabyteDB allows per-query selection between serializable isolation for critical operations and read-committed for analytics. However, this flexibility requires careful management to avoid accidental data corruption.

Source
YugabyteDB: Does YugabyteDB support both SQL and NoSQL workloads?

Yes, YugabyteDB offers YSQL for PostgreSQL-compatible SQL and YCQL for Cassandra-like NoSQL workloads, using the same DocDB storage engine to support both simultaneously.

Source
YugabyteDB: Can YugabyteDB scale compute and storage independently?

No, YugabyteDB couples compute and storage scaling, unlike TiDB which separates them. This means scaling decisions are less flexible and optimization is more complex.

Source
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