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Amazon RDS vs PlanetScale

PlanetScale offers a hosted MySQL/Postgres service built for horizontal scaling, but is not an AWS service.

Short answer: Pick Amazon RDS if you want managed relational databases with high availability; pick PlanetScale if you want sharded MySQL/Postgres with unlimited IOPS. Amazon RDS has a free plan; PlanetScale starts at $5/month.

Which to pick

Pick Amazon RDS if you want…

  • Managed relational databases with high availability
  • A free plan to start with
  • Integrations with AWS Outposts or Amazon RDS Proxy (on Amazon RDS's list, not PlanetScale's)

Pick PlanetScale if you want…

  • Sharded MySQL/Postgres with unlimited IOPS
  • Hosted MySQL/Postgres with scaling
  • Integrations with Fivetran, Airbyte or Hightouch (on PlanetScale's list, not Amazon RDS's)

Side by side

What it is
Amazon RDS:Amazon RDS is a fully managed relational database service that simplifies setup, operation, and scaling of multiple database engines on AWS.
PlanetScale:PlanetScale provides managed, horizontally-sharded MySQL, Vitess, and Postgres databases with unlimited IOPS and high-availability.
Best for
Amazon RDS:Managed relational databases with high availability
PlanetScale:Sharded MySQL/Postgres with unlimited IOPS
Who it’s for
Amazon RDS:Developers and enterprises needing managed relational databases on AWS
PlanetScale:Developers and teams needing scalable, high-performance cloud databases.
Pricing
Amazon RDS:Freemium
PlanetScale:Paid
Starting price
Amazon RDS:—
PlanetScale:$5/month (Single-node Postgres)
Free plan or trial
Amazon RDS:Free trial
PlanetScale:—
Plans
Amazon RDS:—
PlanetScale:Single-node Postgres $5 per month · PlanetScale Metal $50 per month
Works with
Amazon RDS:AWS Outposts, Amazon RDS Proxy
PlanetScale:Fivetran, Airbyte, Hightouch, Datadog, Vantage, Debezium, Prometheus, pganalyze

Amazon RDS features

  • Automated management. Handles provisioning, configuration, backups, and patching automatically.
  • Multi-AZ high availability. Provides automated failover with Multi-AZ deployments for resilience.
  • Engine choice. Supports eight database engines including Aurora, PostgreSQL, MySQL, MariaDB, Oracle, SQL Server, and Db2.
  • Flexible deployment. Offers on-premises (Outposts), custom OS/database environments, and proxy services.
  • Scalable storage. Provides General Purpose SSD and Provisioned IOPS storage options up to 64 TiB.
  • Pricing flexibility. Pay-as-you-go on-demand, Reserved Instances, and Free Tier with no minimum fees.

PlanetScale features

  • Horizontal sharding. Vitess and Neki enable explicit sharding for MySQL and Postgres across thousands of nodes.
  • Branch-per-environment. Each branch runs on its own isolated cluster for safe schema changes.
  • Unlimited IOPS on NVMe. PlanetScale Metal uses blazing-fast NVMe drives with unlimited IOPS.
  • High-availability clusters. One primary and two replicas across three availability zones with automated failover.
  • Built-in connection pooling. PgBouncer for Postgres and similar pooling for MySQL reduce connection overhead.
  • Query Insights & observability. Integrated monitoring dashboards for Vitess, Neki, and Postgres workloads.
  • Database Traffic Control™. Set flexible budgets on query traffic to prevent runaway queries.
  • Security & compliance. SOC 1/2, PCI DSS, HIPAA compliance with IP restrictions and private link options.

Amazon RDS vs PlanetScale FAQ

What is the difference between Amazon RDS and PlanetScale?+

PlanetScale offers a hosted MySQL/Postgres service built for horizontal scaling, but is not an AWS service.

Should I use Amazon RDS or PlanetScale?+

Pick Amazon RDS if you want managed relational databases with high availability, a free plan to start with or integrations with AWS Outposts or Amazon RDS Proxy (on Amazon RDS's list, not PlanetScale's). Pick PlanetScale if you want sharded MySQL/Postgres with unlimited IOPS, hosted MySQL/Postgres with scaling or integrations with Fivetran, Airbyte or Hightouch (on PlanetScale's list, not Amazon RDS's).

Is Amazon RDS or PlanetScale free?+

Amazon RDS has a free plan and paid plans. PlanetScale is paid, from $5/month (Single-node Postgres).

Do Amazon RDS and PlanetScale integrate with the same tools?+

Their integration lists don't overlap: Amazon RDS lists AWS Outposts and Amazon RDS Proxy; PlanetScale lists Fivetran, Airbyte, Hightouch, Datadog and 8 more.

Based on each tool's website and DevHunt data. Details may change; check the official sites.