@lianghai it’s a mixture of several things. In principle I re-create the database contents from scratch every time with this code: https://github.com/Codepoints/unicode2mysql/
It needs some modifications for new fields and/or values in the UCD XML file that is the basis for all data.
I also need Noto Fonts and Unifont to update to have glyphs for the new cps, need to handle new scripts, sudden 404s when accessing resources and so on.
Then I update the actual website code itself, which is quite quick usually. And…