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valkey-encoding-tuning

Valkey (and Redis) internally encodes hash keys as a listpack, which is very memory-efficient. But, if a field in the hash exceeded the hash-max-listpack-value (by default, 64 characters), then it will be encoded as a hashtable instead.

This tool will scan/analyze the whole Valkey dataset, to calculate the data size statistics for the hash keys, helping the administrators to determine the optimal value for encoding hash objects.

Requirements

  • Go 1.20+ (or compatible version)
  • Valkey server (local or remote)

Installation

Clone the repository:

git clone https://github.com/Percona-Lab/valkey-encoding-tuning.git
cd valkey-encoding-tuning

Install dependencies:

go mod tidy

Usage

Build the project:

make build

Run the tool:

./valkey-encoding-tuning [flags]

Or directly:

go run ./cmd/... [flags]

Example

go run ./cmd/... \
  --address=127.0.0.1:6379 \
  --username=default \
  --password=hello-world