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Go Track

Weekly Goals​

  • System Design (HLD + LLD)
    • Design:
      • Rate limiter service.
      • Auth service.
      • File storage service.
      • Log processing pipeline.
    • Practice LLD: structs, interfaces, patterns.
  • DSA
    • Maintain 2–3 problems/day.
  • Prep
    • Capture LLD diagrams/code skeletons for machine coding.

Use together with:

Weekly Overview Table​

DayFocus
1Rate limiter service (HLD + LLD)
2Auth service (HLD + LLD, tokens, sessions)
3File storage service (S3-style, presigned URLs)
4Log processing pipeline (ingest → store → query)
5LLD patterns & struct diagrams (SOLID, patterns)
6Consolidation: pick 1–2 services & refine designs
7Weekly review & final system design reflection

Day 1 – Rate Limiter Service (HLD + LLD)​

4-Hour Plan​

  • Block 1 (HLD – 60–75 min)

    • Requirements, design, API.

  • Block 2 (LLD – 60 min)

    • Sketch interfaces in Go:
      • RateLimiter, TokenBucketRateLimiter, SlidingWindowRateLimiter.
    • Apply Strategy pattern.

  • Block 3 (DSA – 60 min)

    • 2–3 problems.

  • Block 4 (Review – 30 min)

    • Save LLD sketch.

6-Hour Plan​

  • Add:
    • Pseudo-code (60 min): Go-like pseudo-code using Redis.

Day 2 – Auth Service (HLD + LLD)​

4-Hour Plan​

  • Block 1 (HLD – 60–75 min)

    • Requirements, components, API.

  • Block 2 (LLD – 60 min)

    • Interfaces:
      • AuthService, TokenService, PasswordHasher.
      • UserRepository.

  • Block 3 (DSA – 60 min)

    • 2–3 problems.

  • Block 4 (Review – 30 min)

    • Map to existing auth implementation.

6-Hour Plan​

  • Add:
    • Sequence diagram (60 min).

Day 3 – File Storage Service (HLD + LLD)​

4-Hour Plan​

  • Block 1 (HLD – 60–75 min)

    • Requirements, components.

  • Block 2 (LLD – 60 min)

    • Struct design:
      • FileService, StorageProvider (interface), S3StorageProvider.
    • Use Repository and Adapter patterns.

  • Block 3 (DSA – 60 min)

    • 2–3 problems.

  • Block 4 (Review – 30 min)

    • Document presigned URL flow.

6-Hour Plan​

  • Add:
    • Edge case discussion (60 min).

Day 4 – Log Processing Pipeline (HLD + LLD)​

4-Hour Plan​

  • Block 1 (HLD – 60–75 min)

    • Requirements, components.

  • Block 2 (LLD – 60 min)

    • Structs:
      • LogIngestor, LogProcessor, LogRepository.

  • Block 3 (DSA – 60 min)

    • 2–3 problems.

  • Block 4 (Review – 30 min)

    • Batch writes and backpressure.

6-Hour Plan​

  • Add:
    • Failure mode analysis (60 min).

Day 5 – LLD Patterns & Struct Diagrams​

4-Hour Plan​

  • Block 1 (Concepts – 60–75 min)

    • Review SOLID principles.
    • Patterns: Strategy, Factory, Adapter, Observer, Repository.

  • Block 2 (Practice – 60 min)

    • Check SOLID in one service.

  • Block 3 (DSA – 60 min)

    • 2–3 problems.

  • Block 4 (Review – 30 min)

    • Update skill gap template.

6-Hour Plan​

  • Add:
    • Struct diagram sketches (60 min).

Day 6 – Consolidation: Refine 1–2 Service Designs​

4-Hour Plan​

  • Block 1 (Selection – 30 min)

    • Choose 1–2 systems.

  • Block 2 (Refinement – 90 min)

    • Refine APIs, data models, LLD.

  • Block 3 (DSA – 60 min)

    • 2–3 problems.

  • Block 4 (Review – 30 min)

    • Save refined designs.

6-Hour Plan​

  • Add:
    • Code skeletons (60 min): Go skeletons.

Day 7 – Weekly Review & Final System Design Reflection​

4-Hour Plan​

  • Block 1 (Review – 60–75 min)

    • Review all systems designed.
    • Update skill gap template.

  • Block 2 (Reflection – 60 min)

    • Write 3–5 key lessons.

  • Block 3 (DSA – 45–60 min)

    • Mixed problems.

6-Hour Plan​

  • Add:
    • Mock design (45–60 min).