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Learning Paths

Don't pick projects at random. Follow a deliberate trajectory with clear sequencing, checkpoints, and expected interview outcomes.

How it helps
Each path orders projects to maximize skill compounding instead of isolated topic hopping.
What to do
Complete each step, then run interview simulation checkpoints to validate reasoning quality.
Tracking
Sign in to persist progress and resume trajectories from any device.

New here?

Start with Core Distributed Systems for the fastest onboarding.

beginner6 steps6h total
Core Distributed Systems
A structured path from global request routing fundamentals to reliable data movement patterns used in modern backend systems.
Progress0%

Trajectory

URL Shortener at Global Scale

API Rate-Limiting as a Multi-Region Service

Feature Flag Evaluation Engine at Scale

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URL Shortener at Global Scale

Covers classic read-heavy architecture tradeoffs in a compact, high-signal system.

3 free steps · 3 premium steps
intermediate6 steps6h total
Scalability and Reliability
Focuses on high-throughput, multi-region reliability patterns with strong operational safeguards and incident resilience.
Progress0%

Trajectory

Content Delivery Network (CDN) Service

Search Engine Platform

Distributed Job Scheduler with DAG Dependencies

Recommended next

Content Delivery Network (CDN) Service

Builds a solid mental model for edge workloads and cache correctness at scale.

0 free steps · 6 premium steps
intermediate6 steps6h total
Realtime and Streaming Systems
A trajectory for low-latency event systems where ordering, deduplication, and user-visible correctness are critical.
Progress0%

Trajectory

Real-Time Chat & Messaging System

Distributed Presence System (Who's Online?)

Real-Time Leaderboard with Anti-Cheat Detection

Recommended next

Real-Time Chat & Messaging System

Establishes delivery semantics and fanout design for user-facing realtime systems.

0 free steps · 6 premium steps
Premium paths unlock deeper progression
Free projects let you start immediately. Premium unlocks full trajectories end-to-end with no gaps.