Best In-Memory Databases in 2026

Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.

Key Redis features:

Performance Data Structures Scalability Persistence

Open Source

Create production-ready applications with zero code.

Key Modelence features:

Full-Stack JavaScript Framework Built-in Backend Services Simplified Deployment Rapid Prototyping and Development

Try for free freemium $9 / Monthly Sponsored

Aerospike is a high-performing NoSQL database supporting high transaction volumes with low latency.

Key Aerospike features:

High Performance Scalability ACID Compliance Hybrid Storage

Open Source

Kx Systems has a high-performance vector database, kdb+, with a built-in programming language, q, that sets the standard for time-series analytics.

Key KX features:

High Performance q Programming Language Time-Series Data Handling Scalability

Dragonfly - Scalable in-memory datastore made simple.

Open Source

High-performance, distributed memory object caching system.

Key memcached features:

High Performance Scalability Simplicity Open Source

Open Source

Boring infrastructure, honestly priced.

Key Velstash Cache features:

High Performance Caching Reduced Backend Load Scalability Support Flexible Integration

paid Free Trial €12 / Monthly

Clustering and highly scalable data distribution platform for Java.

Key Hazelcast features:

Scalability In-Memory Data Grid High Availability Ease of Use

MemCachier.

The technology behind Memcached Cloud is built on the proven technology powering the Redis Cloud service.

SAP HANA is an in-memory, column-oriented, relational database management system.

Key SAP HANA features:

High Performance Real-Time Analytics Scalability Advanced Data Processing

Redis Hosting.

Key Google Cloud Memorystore features:

Fully Managed Service High Availability Integration with Google Cloud Ecosystem Support for Redis and Memcached

Database for real-time transactions and analytics.

Key MemSQL features:

Performance Scalability SQL Compatibility Operational Simplicity

KeyDB is fast NoSQL database with full compatibility for Redis APIs, clients, and modules.

Key KeyDB features:

High Performance Redis Compatibility Active Replication Built-in TLS