I want to buy a MacMini as a development machine. Do you have any suggestions?

The computer provided by the company is not easy to use, and I still have a 19-year-old mbp with 16GB. It's really a little overwhelmed. Development programming is mainly Java, Flink, etc. Possible double opening items. Generally no more. Docker generally runs postgres, redis, etc. It is also possible to run some other databases temporarily to facilitate debugging. Judging from the recent load, I feel that 24G is relatively suitable, but this generation has the AI cake, so is it necessary to use 32G? There is also hard disk space. I think reddit writes 512G faster than 256, but I think 256 + external storage solution. In addition, I don't know how the maven warehouse, Idea index, cache, and Docker-related materials are all lost to external storage.