Use Valkey as an Alternative for Redis Caching in docker-compose.yml

[tokiwadai]

Summary

Adopt Valkey as an alternative to Redis in the development docker-compose configuration, providing a modern, open-source caching solution while maintaining full compatibility.

Motivation

• Licensing benefits: Valkey is a Linux Foundation project fork of Redis with a more permissive license
• Full compatibility: Valkey is 100% Redis protocol-compatible, requiring no code changes
• Active development: Backed by major tech companies and actively maintained
• Drop-in compatible: Uses the same commands, protocols, and client libraries

Proposed Changes

Update scripts/docker-compose.yml to use Valkey as an alternative caching solution:

Changes Made

services:
  redis:
    image: valkey/valkey:alpine          # Changed from redis:alpine
    container_name: valkey               # Changed from redis
    healthcheck:
      test: ['CMD-SHELL', 'valkey-cli ping | grep PONG']  # Changed from redis-cli
      interval: 1s
      timeout: 3s
      retries: 5
    ports:
      - '6379:6379'
    volumes:
      - ./data/valkey:/data              # Changed from ./data/redis
    command: valkey-server --appendonly yes  # Changed from redis-server

What Changed

Component	Before (Redis)	After (Valkey)
Docker image	redis:alpine	valkey/valkey:alpine
Container name	redis	valkey
CLI command	redis-cli	valkey-cli
Server command	redis-server	valkey-server
Data volume	./data/redis	./data/valkey

What Stayed the Same

• Port: 6379 (Redis-compatible)
• All Redis protocols and commands
• Client library compatibility
• Appendonly persistence mode
• Health check mechanism