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System Design
System design from zero: clarifying requirements, estimating scale, load balancing, caching, databases, sharding and reliability. Every number is worked in the open and checked.
Start learning ❯❯47 lessons · 14 topics · 0/47 completed
Course contents
Work top to bottom — the sidebar is the course. Topics later in the list assume the ones before them.
What Is System Design
Beginner · ⏱ 6 min · standalone lesson
The Interview Roadmap
Start: Clarify the Requirements ❯Scale and Estimation
- Thinking in Scale
- Latency and Throughput
- Latency Numbers Worth Knowing
- Back-of-Envelope Estimation
- Estimating Storage and Bandwidth
Requests End to End
Start: Clients and Servers ❯Scaling the App Tier
Start: Vertical and Horizontal Scaling ❯Caching
- Caching: Where and Why
- Cache-Aside and Read-Through
- Write-Through and Write-Back
- Eviction and Invalidation
Content and Files
Start: What a CDN Does ❯Databases at Design Level
Start: SQL or NoSQL ❯Partitioning and Sharding
Start: Why Partition Data ❯Consistency and Availability
- Consistency in Plain Words
- Availability in Plain Words
- The CAP Theorem
- Strong and Eventual Consistency
Async Work
Start: Message Queues ❯Services and APIs
Start: Monolith or Microservices ❯Reliability
Start: Single Points of Failure ❯Design a Photo-Sharing App
Beginner · ⏱ 12 min · standalone lesson