Garnet

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A high-performance, rich, and extensible cache-store for modern applications.

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Tracked since2026

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The Bottom Line

Entry price

Free, no paid tier

Biggest pro

High performance and low latency for large services

Biggest con

Requires familiarity with .NET ecosystem for advanced extensibility

TL;DR - Garnet

High-performance, scalable cache-store built on .NET C#.
Compatible with Redis clients via RESP protocol and supports many Redis data structures.
Offers extensibility, cluster mode, and efficient TLS for modern applications.

Pricing: Free forever

Best for: Individuals & startups

What is Garnet?

Editorial review

Garnet is an open-source, high-performance, and extensible cache-store developed by Microsoft. It is designed to provide a fast, scalable, and secure solution for data storage and retrieval, particularly for large services requiring low latency and high throughput. Garnet leverages a thread-scalable storage layer called Tsavorite and offers cache-friendly shared-memory scalability with tiered storage support. It supports the popular RESP wire protocol, making it compatible with unmodified Redis clients across various programming languages. Garnet offers a substantial portion of the Redis API, including raw strings and complex data structures like sorted sets, bitmaps, and HyperLogLog. Written in modern .NET C#, it runs efficiently on Windows and Linux, and is built to avoid garbage collection overheads. Developers can extend its capabilities using new .NET data structures and benefit from efficient TLS support out of the box.

Available on: Windows, Linux

LCLouis CorneloupUpdated May 26, 2026 · how we evaluateSourcemicrosoft.github.io ↗

Pros & Cons

Pros

High performance and low latency for large services
Cost reduction for large services due to efficiency
Broad compatibility with existing Redis clients and APIs
Modern and secure with .NET C# and TLS support
Extensible for custom data structures and functionalities

Cons

Requires familiarity with .NET ecosystem for advanced extensibility
May have a learning curve for those unfamiliar with Redis-like systems

Key Features

Thread-scalable storage layer (Tsavorite)Cache-friendly shared-memory scalabilityTiered storage supportCluster mode (sharding and replication)Pluggable network design for high performanceSupports RESP wire protocolCompatible with unmodified Redis clientsSupports Redis API surface (strings, sorted sets, bitmaps, HyperLogLog)

Pricing

Free

Garnet is completely free to use with no hidden costs.

View pricing

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Still deciding?

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Garnet FAQ

How does Garnet achieve high performance and low latency?

Garnet leverages a thread-scalable storage layer called Tsavorite, which contributes to its high performance. It also offers cache-friendly shared-memory scalability with tiered storage support, designed for large services requiring low latency and high throughput.

Which teams would benefit most from using Garnet?

Teams building large services that require fast, scalable, and secure data storage and retrieval would find Garnet beneficial. Its design caters to applications needing low latency and high throughput while aiming for cost reduction through efficiency.

How does Garnet compare to Redis in terms of compatibility?

Garnet supports the popular RESP wire protocol, making it compatible with unmodified Redis clients across various programming languages. It also offers a substantial portion of the Redis API, including raw strings and complex data structures.

Can developers extend Garnet's core functionalities?

Yes, developers can extend Garnet's capabilities by using new .NET data structures. This extensibility allows for custom functionalities beyond its out-of-the-box offerings.

Does Garnet include a free tier?

Garnet is free to use, as it is an open-source project developed by Microsoft. There are no paid plans required to utilize its features.

What kind of data structures does Garnet support?

Garnet supports a variety of data structures, including raw strings and complex types like sorted sets, bitmaps, and HyperLogLog. This broad support makes it versatile for different application needs.

Source: microsoft.github.io

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