01 / FOUNDATIONS
All concepts →Core concepts
The building blocks. Explained clearly.
A handbook for software systems
Understand the systems behind software.
Complex systems. Clear thinking.
Learn how engineering systems work, where they fail, and how to make sound design decisions.
Less boilerplate. More understanding.
01 Learn the idea02 Follow the visual03 Know the limits
Find your starting point
Explore the handbook
02 / PUT IT TO WORK
All problems →System problems
Real requirements. Concrete designs.
03 / THE BIG PICTURE
All domains →Architecture domains
Patterns in the context that matters.
Choose your next step
Learn by doing.
01
Learn concepts
Build a clear mental model of the systems behind software.
02
Solve problems
Apply engineering ideas to practical system challenges.
03
Practice interviews
Explain your reasoning and defend your design choices.
Featured concept
Rebalancing partition keys along the hash ring
Distribute millions of keys across dynamic storage nodes with virtual node rings and minimal key migration on scale-out.
Inspect the hash ringHash(Key)Ring Pos
ClockwiseNext Node
VNodesEven Skew
Learn by doing
Choose a practical track
High-level design / HLD
Connect services, data, and scale.
Low-level design / LLD
Turn requirements into clean abstractions.
Algorithms & coding
Make the logic work, then make it efficient.