System design

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Tier by tier

Complete every exercise of a tier to add its nine to your rank in this lab.

  1. 90%

    Beginner free

    0 of 9 passed

    1. Your first web application: to do
    2. Size the virtual machine: to do
    3. Survive a server crash: to do
    4. Serve images to Europe: to do
    5. Take the pressure off the database: to do
    6. Launch day: to do
    7. The runtime pays the bill: to do
    8. Two servers are not redundancy: to do
    9. The database will crash at 11:00: to do
  2. 99%

    Intermediate

    0 of 7 passed

    1. URL shortener: locked
    2. Pay only for office hours: locked
    3. Checkout that never waits: locked
    4. Too many connections: locked
    5. Authentication is the bottleneck: locked
    6. Search without melting the database: locked
    7. A slow payment provider: locked
    Unlock with the Intermediate plan
  3. 99.9%

    Advanced

    0 of 10 passed

    1. A cart that never forgets: locked
    2. Shard the write path: locked
    3. Stop the cascade: locked
    4. Stop the scrapers: locked
    5. Partitions cap your parallelism: locked
    6. The celebrity problem: locked
    7. A replica set that survives a zone: locked
    8. A cold cache at peak: locked
    9. Absorb the flood at the edge: locked
    10. Cold starts in the tail: locked
    Unlock with the Advanced plan
  4. 99.99%

    Expert

    0 of 8 passed

    1. The disaster recovery drill: locked
    2. Fail over in seconds, not minutes: locked
    3. A ledger that outlives its region: locked
    4. No region depends on another: locked
    5. Telemetry that survives a region: locked
    6. Exactly-once at 8,000 transfers per second: locked
    7. Read locally, write home: locked
    8. Capstone: payments across regions: locked
    Unlock with the Expert plan
  5. 99.999%

    Architect

    0 of 6 passed

    1. Five times cheaper, just as reliable: locked
    2. Contain the blast radius: locked
    3. Plan the 10x launch: locked
    4. Not everything needs consensus: locked
    5. Untangle the distributed monolith: locked
    6. Strangle the monolith, safely: locked
    Unlock with the Architect plan