I used to study by re-reading notes. It felt productive but I retained almost nothing. Then I discovered spaced repetition and it changed how I learn.
How It Works
Instead of reviewing everything at once, you review material at increasing intervals:
- Just learned → review in 1 day
- Remembered once → review in 3 days
- Remembered twice → review in 7 days
- Remembered three times → review in 14 days
You spend more time on things you find hard and less on things you already know. It's brutally efficient.
For Developers
This is especially useful for:
- System design concepts — CAP theorem, load balancing, caching strategies
- Algorithm patterns — sliding window, two pointers, BFS/DFS
- Language quirks — JavaScript closures, Python generators, Go channels
- Interview prep — behavioral questions, company-specific knowledge
My Flashcard App
I built a flashcard quiz app with multiple built-in decks covering JavaScript, React, system design, and general CS. You can flip cards, mark them as correct or wrong, and see your progress through each deck.
Try it: Flashcard Quiz
Takeaway
Stop re-reading. Start recalling. Active recall with spaced repetition is the most evidence-backed learning technique in cognitive science.