Recent Redis License Change

[HAL9000COM]

Redis recently announced a license change and version starting from v7.4 is no longer considered open source.
Is Misskey backend now compatible with other alternatives like KeyDB?

[syuilo]

Is Misskey backend now compatible with other alternatives like KeyDB?

Yes

[HAL9000COM]

Thanks for reply. Would test some alternatives.

[HAL9000COM]

KeyDB works fine with Misskey.
Kvrocks and Garnet seem to have compatibility issue with the same error message. Maybe related to version check in BullMQ.

TypeError: Invalid version. Must be a string. Got type "object".
    at new SemVer (/misskey/node_modules/.pnpm/semver@7.5.4/node_modules/semver/classes/semver.js:19:13)
    at compare (/misskey/node_modules/.pnpm/semver@7.5.4/node_modules/semver/functions/compare.js:3:3)
    at Object.lt (/misskey/node_modules/.pnpm/semver@7.5.4/node_modules/semver/functions/lt.js:2:29)
    at isRedisVersionLowerThan (/misskey/node_modules/.pnpm/bullmq@5.4.0/node_modules/bullmq/dist/cjs/utils.js:149:19)
    at RedisConnection.init (/misskey/node_modules/.pnpm/bullmq@5.4.0/node_modules/bullmq/dist/cjs/classes/redis-connection.js:143:53)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

Still confused by the license change, but at least we have a working alternative.