ljeng/cheat-sheet resource
Knowledge base for software engineers and research engineers observed · 2026-08-28
Health v2 · maintenance only
75/100
- Activity 94
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 2554
- days_rel: n/a
- days_push: 38
- n_releases_24m: 0
Adoption not part of the score
1304 stars · 156 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A markdown-based knowledge base and cheat sheet covering coding, algorithms, data structures, system design, operating systems, and research engineering topics. It is published as a static reference site for software and research engineers.
Use cases
- review algorithms before a coding interview
- study system design concepts like distributed systems and load balancers
- brush up on data structures such as trees, heaps, and hash maps
- learn operating system fundamentals like threads, locks, and scheduling
- reference graph algorithms like Dijkstra's and A*
- review probability and discrete math for research engineering
When to choose
- you want a free, concise reference for CS fundamentals and interview prep
- you prefer markdown notes over interactive courses
- you need quick refreshers on algorithms, OS, and system design in one place
When to avoid
- you need structured exercises, graded problems, or interactive learning
- you want a comprehensive textbook-depth treatment of any single topic
- you need guaranteed maintenance or a specific license for redistribution
Facets
learning-resource · maturity active
documentation markdown developer-tools education developer-tools operating-systems mathematics cross-platform cheat-sheet interview-prep system-design data-structures coding-interview computer-science study-notes algorithms web-server
2 sources
- readme: https://github.com/ljeng/cheat-sheet · fetched 2026-08-28 · 89a3842b0dba
- homepage: https://ljeng.github.io/cheat-sheet/ · fetched 2026-08-29 · 6ec4d19f8a8d
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| ljeng/cheat-sheet | main | 75 |
For agents
markdown · JSON · MCP: product_card(name="ljeng/cheat-sheet")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem