I see a screenshot there defines an anki card? Couldn't find any mention about anki in docs or on the github (I only skimmed though). Would be interesting to see if there is a possible interplay.
I myself use vanilla org mode for this purpose (spaced repetition). My workflow is the following:
1. Create a hierarchical structure with leaves representing
bits of knowledge. For example postgres/indexes{btree, GIN, ...}
2. Have a study session with materials (books, video, etc).
3. Try to recreate a concise version of each subject and place it under leaves, so put text in btree, GIN, etc. If I cannot do something I skip it and fill as much as possible.
4. Verify written, fix if necessary.
Then, the document will sit there for a while and when I feel that I need to review a certain subject I would open a tree node and try to recall the child nodes, or sometimes go directly to leaf nodes and try to explain each. Then verify with the data there, maybe do additional research if something isn't clear.
I initially wanted to make anki cards for every piece of information that goes to leaf nodes, but it seemed that hierarchical organization suits me better. It would be interesting to try an automatic card system that would keep track of when I reviewed the concepts and remind me to do so.