Secondary development ideas for guidance and solutions

The second development thought asks the guidance younger brother project needs to make a php system, because considering does not have the suitable system, plan to use dede for the second development, the question comes... 1. the dede system is relatively large. because I have used very few features, is it a bit redundant to expand on the basis of dede? 2. if some dede class libraries are used, it is found that the dede class libraries are basically connected to each other and it is difficult to provide guidance for a single secondary development.
The younger brother project needs to build a php System. considering that there is no suitable system, he plans to use dede for secondary Development. the problem arises...

1. the dede system is relatively large. because I have used very few features, is it a bit redundant to expand on the basis of dede?

2. if some dede class libraries are used, it is found that the dede class libraries are basically connected to each other and it is difficult to use them separately.

3. if I re-develop it myself, I will not mention the huge amount of work, and I am not sure to compliment the performance, security, and stability.


For guidance, for guidance...

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Do you think the performance and security of dede are good?
In order to take care of the consumers, this CMS is almost a silly Management, which brings performance problems. You can select the best version and platform for development based on your familiarity with PHP.

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The best is your own. if you think you can't do it, it's someone else. What else do you have to consider.
Dedecms is black every year