Repsheet

fsrs (full spaced repetition system) uses a memory model called dhp — it looks at difficulty, half-life, and recall probability to decide when you should review a coding problem.

recall probability tracks how likely you are to remember something. half-life is how long that memory lasts. difficulty shows how tough a problem is for you. fsrs uses all three to plan your reviews.

by looking at how you've done before and how long it's been, fsrs builds a study plan that helps you learn faster and remember longer.