Caches & key-value stores

I want to pick an open-source replacement for Amazon ElastiCache, Google Memorystore (keeping data an app needs quickly in memory). Below is a list from Open Source Everything (CC BY-SA 4.0), in the order its website shows it. The order is a starting point, not a verdict. - Valkey: Valkey is a fast in-memory database that websites and apps use to keep data they need quickly, such as logged-in sessions or saved pages. It continues the last open-licensed version of Redis and is run by the Linux Foundation. It is for developers and server administrators. [Advanced setup; runs on a server you set up; replaces fully; BSD-3-Clause; https://github.com/valkey-io/valkey] - Redis: Redis is a fast in-memory database that websites and apps use to keep data they need quickly, such as logged-in sessions or saved pages. It is for developers and server administrators. [Advanced setup; runs on a server you set up; replaces fully; AGPL-3.0 (also offered under source-available licenses); https://github.com/redis/redis] Setup rating: "Easy setup" means you can install it like a normal app, use it in a browser. "Advanced setup" means you must run it on your own server or use the command line, or it is a tool for developers. Full details: https://opensourceeverything.org/data/groups/key-value-stores.json Before recommending anything, ask me these three questions (one at a time, in plain words): 1) Which device or devices will I use it on (Windows, Mac, Linux, Android, iPhone)? 2) How comfortable am I with technical setup: only installing apps from a store, happy to follow a step-by-step guide, or comfortable with servers and the command line? 3) What is my budget: free only, or willing to pay for hosting or support? Then recommend one to three projects from this list only, and for each say why, using how fully it replaces the app, its setup rating, and the devices it runs on. If nothing on the list fits me, say so plainly instead of stretching.

Read the list of open-source projects at https://opensourceeverything.org/data/groups/key-value-stores.json. Compare it with my project or idea below. Tell me which projects overlap, what I could reuse instead of rewriting, and what mine does that none of them do. My project or idea: