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Tech riderRev. 1 Oct 2026

RonDB

Ch 136.7of 32 Key-Value Databases
  1. 1Runs onAPI, Linux, self-hosted
  2. 2CostsFree plan
  3. 3Deploymentboth
  4. 4Data persistenceYes
  5. 5High availabilityYes
  6. 6SQL supportYes
  7. 7Supported data modelskey-value, relational, in-memory, on-disk columns
7 lines stated Written from the maker's own pages: rondb.com, docs.rondb.com
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Overview

RonDB is ranked #13 of 32 in key-value databases on Specifiction. It runs on API, Linux, Self-hosted. There is a free plan.

RonDB plans and pricing

All plans
Serverless RonDB via Hopsworks Free quotas on Feature Groups (tables) · quotas on memory usage docs.rondb.com · 1 Oct 2026

Compared on key-value databases

Deployment
bothrondb.com
Data persistence
Yesrondb.com
High availability
Yesrondb.com
SQL support
Yesrondb.com
Supported data models
key-value, relational, in-memory, on-disk columnsrondb.com

Facts

What it does
RonDB is a distributed, shared-nothing storage engine and an open-source fork of MySQL NDB Cluster for real-time applications.docs.rondb.com · 1 Oct 2026
Storage scale
RonDB supports up to 1 PiB of storage.docs.rondb.com · 1 Oct 2026
Scaling
RonDB supports online horizontal and vertical scaling for storage and MySQL-server compute.docs.rondb.com · 1 Oct 2026
Transactions
RonDB is ACID compliant through MySQL-server support, with in-memory data persisted using REDO logs and checkpoints.docs.rondb.com · 1 Oct 2026
Performance model
RonDB targets low latency, high availability, high throughput and scalable storage, which it calls LATS.docs.rondb.com · 1 Oct 2026
SQL access
Applications can access RonDB through the MySQL Server API with SQL compatibility and parallel query support.rondb.com · 1 Oct 2026
AI integrations
RonDB supports AI application storage integrated with Spark and Kafka.rondb.com · 1 Oct 2026
Redis compatibility
Rondis implements a Redis server using RonDB storage and the Redis wire protocol.docs.rondb.com · 1 Oct 2026
REST security
The RonDB REST API supports Hopsworks API-key authentication and recommends TLS when API keys are used.docs.rondb.com · 1 Oct 2026
Encryption at rest
RonDB supports encryption of on-disk data including local checkpoints, tablespaces, REDO logs and UNDO logs, but not backups.docs.rondb.com · 1 Oct 2026
Deployment options
RonDB can be tested locally, run in Docker, managed in AWS, Azure or GCP using own cloud credentials, or deployed on-premises by inquiry.docs.rondb.com · 1 Oct 2026
Replication
RonDB supports synchronous cross-availability-zone active-active replication with 1 to 3 replicas and asynchronous cross-region replication across clusters with conflict resolution.docs.rondb.com · 1 Oct 2026
Primary use case
RonDB is used as the online feature-store database for low-latency, high-availability machine-learning applications in Hopsworks.docs.rondb.com · 1 Oct 2026
Transactional limit
RonDB uses read-committed isolation and does not support range locks.docs.rondb.com · 1 Oct 2026
Maker support
RonDB is brought to you by the RonDB team at Hopsworks AB, which provides dedicated support for high-performance online feature-store requirements.docs.rondb.com · 1 Oct 2026

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Where it ranks on Specifiction

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