planId: 5eb207a9-39d8-4dab-a5fb-7dd033d6904c archivedAt: "2026-04-30" completionStatus: complete todos:

id: scaffold status: completed
id: templates status: completed
id: curated-list status: completed
id: patterns status: completed
id: problems-easy-medium status: completed
id: problems-hard status: completed
id: cheatsheets status: completed
id: sd-fundamentals status: completed
id: sd-building-blocks status: completed
id: sd-hld status: completed
id: sd-lld status: completed
id: sd-patterns-deepdives status: completed
id: interview-prep status: completed
id: cross-link-map status: completed
id: validation-pass status: completed

DSA + System Design Learning Mind-Map Repo (archived plan)

Goal

A markdown-first knowledge base that doubles as a mind map for fast recall and teaching. Every artifact follows a strict template so:

Pattern recognition is one glance away
Similar problems are cross-linked (same pattern → same recipe)
Go + JavaScript snippets sit beside each problem
System design covers Fundamentals → Building Blocks → HLD → LLD → Deep Dives
Output is codex-validatable (consistent shape, no missing sections)

Folder Structure (final)

DSA mind-map home — entry point
12-week roadmap — 12-week phased plan
Problem mind-map template — strict template every problem file follows
Similar problems map — cross-link table
patterns/ — 20 pattern mind-maps
topics/<topic>/problems/NNN-name.md — one file per curated problem (226 unique on disk; see Problem index)
cheatsheets/
system-design/fundamentals/
system-design/building-blocks/ (+ id-generation.md added during implementation)
system-design/hld/ — 20 case studies
system-design/lld/ — 16 LLD/OOD docs
system-design/design-patterns/ — GoF + concurrency
system-design/deep-dives/ — Kafka, Redis, DynamoDB, Postgres, Cassandra
system-design/templates/ — HLD, LLD, RESHADED interview framework
interview-prep/company-playbooks/ — Google, Meta, Amazon, Microsoft, Apple, Netflix
scripts/validate-problems.sh — section checker

Per-Problem Mind-Map Template (12 sections)

At a Glance — topic, pattern, difficulty, companies, frequency
Problem (one-liner)
Recognition Cues
Diagram — Mermaid (and/or ASCII) for quick visual scan; placed early
Approaches — brute → better → optimal
Optimal Solution — Go + JS
Walkthrough
Edge Cases
Pitfalls
Similar Problems
Variants
Mind-Map Tags

Curated Problem Set

Source blend: NeetCode 150 + Grind deltas + Striver picks + Sean Prashad fills + SDE3-tier Hards.

Execution delivered 226 unique problem files (deduplicated canonical paths; e.g. 152 only under topics/dp-1d/).

Pattern Catalog (~20 patterns)

Two Pointers • Sliding Window • Fast & Slow Pointers • Binary Search (+ on answer) • BFS • DFS / Backtracking • Top-K Heap • Merge Intervals • Cyclic Sort • In-place Linked List Reversal • Tree DFS / DP-on-trees • Topological Sort • Union-Find • Trie • Monotonic Stack/Queue • Prefix Sum • Bit Manipulation • DP • Greedy • Divide & Conquer

System Design Coverage

Fundamentals (~10), Building Blocks (~16 with ID generation), HLD (~20), LLD (~16), Design Patterns (GoF + concurrency), Deep Dives (5 stores).

Quality Gates (achieved)

Problem files: ./scripts/validate-problems.sh checks all 11 ## headings
Relative .md links validated clean at archive time
Patterns link to real topics/... filenames

Out of Scope (original plan)

Runnable test suites / CI (Phase 2 optional)
Video assets
Behavioral mocks beyond STAR template

Optional Phase 2 (not in original plan)

GitHub Actions running scripts/validate-problems.sh
Add remaining LeetCode rows from PROBLEM_INDEX only where you want expansion
Per-problem unit tests in solutions/go / solutions/js if switching from notes-first