CacheCanvas
An interactive textbook-style app that turns dry systems-programming topics (caches, pipelining, paging, branch prediction) into drag-and-drop visualizers you can poke at to see hits, misses, and tag lookups happen in real time.
undergraduate CS students studying computer architecture and operating systems
- Step-through animations of L1/L2/L3 reads with adjustable block size, associativity, and replacement policy
- Auto-generated practice problems that grade your cache-line math and address-tagging answers
- Side-by-side comparison view of direct-mapped vs. set-associative vs. fully-associative layouts
- Spaced-repetition quiz mode targeting the questions that actually show up in systems courses and tech interviews
Posts like this cache walkthrough regularly hit the front page of Hacker News because working engineers and students consistently say they 'never really got it' from textbooks; interactive visualization is the missing layer between a diagram and intuition.
HN post with 19 points and the recurring pattern of 'I never understood caches' comments show steady learner appetiteFree Cache Simulator | Simulations4All ↗
Most existing cache sims are bare Java applets or PDF diagrams; few combine guided narrative with interactive knobsFree Cache Simulator | Simulations4All ↗
Students already pay for Chegg, Brilliant, and zyBooks; a focused visualizer fits a $5-10/mo or $30 one-time modelFree Cache Simulator | Simulations4All ↗
Cache hierarchy fundamentals have been stable since the 1980s and remain on every CS curriculum and systems interview
A single web developer can ship the core visualizer in weeks using Canvas or D3; backend needs are minimal