macrostack
Tool profile · In-memory data stores & caching

Garnet

Microsoft Research's cache — MIT, and unusually fast under contention.

92
sovereignty

Garnet is a Redis-protocol cache store out of Microsoft Research, written in C#, and its published throughput under high client concurrency is striking — the workload where Redis's single-threaded design shows most. MIT licensed, around 12k stars, used inside Microsoft before release. It is the most permissively licensed serious option here. The caution is ecosystem: a .NET server is an unusual dependency for teams that are not already there, and it is the newest of these by some distance.

OPEN SOURCEMITSELF-HOSTLOCAL-FIRST
LicenseMIT
PricingFree and open source.
Open sourceYes
Self-hostableYes
Local-first dataYes

What it does well

  • +MIT — the most permissive licence in this comparison
  • +Exceptional throughput under high concurrency
  • +Microsoft Research behind it, with real production use
  • +Redis protocol compatible, so clients work unchanged

Where it falls short

  • −Newest option here with the shortest track record
  • −A .NET runtime dependency many teams will not want
  • −Smaller community than Valkey or DragonflyDB
  • −Not all Redis commands and data types are implemented

Garnet as an alternative to

Where Garnet shows up in our comparisons, and how it ranked.

Garnet head-to-head

Straight comparisons against the tools people weigh it against.

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