Summary & Learning Roadmap

flowchart TB
    Start[Start 🚀] --> Stage1[Stage 1: Foundation
Install → In-Memory → Architecture
1-2 days]
    Stage1 --> Stage2[Stage 2: Data Types
String → List → Set → Sorted Set → Hash
3-5 days]
    Stage2 --> Stage3[Stage 3: Features
TTL → Persistence → Pub/Sub → Transactions → Caching
3-5 days]
    Stage3 --> Stage4[Stage 4: Production
Replication → Sentinel → Cluster → Security
5-7 days]
    Stage4 --> Stage5[Stage 5: Advanced
Streams → Eviction → Locks → Scripting
3-5 days]
    Stage5 --> Stage6[Stage 6: Integration
Node.js → Docker → Best Practices → Interview
2-3 days]

    style Start fill:#7c3aed,color:#fff
    style Stage1 fill:#3b82f6,color:#fff
    style Stage2 fill:#059669,color:#fff
    style Stage3 fill:#f59e0b,color:#fff
    style Stage4 fill:#ec4899,color:#fff
    style Stage5 fill:#06b6d4,color:#fff
    style Stage6 fill:#10b981,color:#fff

flowchart TB
    Need[What do you need to do?] --> Single{Store a single<br/>value or counter?}
    Single -->|Yes| String["String ✅<br/>SET / GET / INCR"]
    Single -->|No| Ordered{Need ordered<br/>collection?}

    Ordered -->|Yes, FIFO| List["List ✅<br/>RPUSH / LPOP"]
    Ordered -->|Yes, by score| SortedSet["Sorted Set ✅<br/>ZADD / ZRANGE"]
    Ordered -->|No| Unique{Need unique<br/>members?}

    Unique -->|Yes| SetOps{Need set<br/>operations?}
    SetOps -->|Yes| Set["Set ✅<br/>SADD / SINTER"]
    SetOps -->|No| Object{Store an<br/>object?}

    Unique -->|No| Object

    Object -->|Yes| Hash["Hash ✅<br/>HSET / HGETALL"]
    Object -->|No| Streaming{Need message<br/>queue or events?}

    Streaming -->|Real-time| PubSub["Pub/Sub ✅<br/>PUBLISH / SUBSCRIBE"]
    Streaming -->|Persistent| Stream["Stream ✅<br/>XADD / XREAD"]

    style Need fill:#7c3aed,color:#fff
    style String fill:#3b82f6,color:#fff
    style List fill:#3b82f6,color:#fff
    style SortedSet fill:#3b82f6,color:#fff
    style Set fill:#3b82f6,color:#fff
    style Hash fill:#3b82f6,color:#fff
    style PubSub fill:#3b82f6,color:#fff
    style Stream fill:#3b82f6,color:#fff