Pdf Link: Zindagi Ka Safar Balraj Madhok

TABLE books (
    id               UUID PRIMARY KEY,
    title            TEXT NOT NULL,
    author           TEXT NOT NULL,
    language         TEXT,
    isbn             TEXT,
    cover_url        TEXT,
    pdf_url          TEXT,          -- S3 key or external link
    rights_status    ENUM('FREE_PUBLIC_DOMAIN','LICENSED_DOWNLOAD','PREVIEW_ONLY','REQUEST_REQUIRED','UNAVAILABLE') NOT NULL,
    preview_page_limit INT DEFAULT 10,
    created_at       TIMESTAMP,
    updated_at       TIMESTAMP
);
TABLE download_logs (
    id               UUID PRIMARY KEY,
    user_id          UUID,
    book_id          UUID,
    timestamp        TIMESTAMP,
    ip_address       INET,
    source           TEXT   -- e.g., 'search', 'direct'
);
TABLE requests (
    id               UUID PRIMARY KEY,
    user_name        TEXT,
    user_email       TEXT,
    book_id          UUID,
    message          TEXT,
    status           ENUM('PENDING','APPROVED','DENIED') DEFAULT 'PENDING',
    created_at       TIMESTAMP,
    reviewed_at      TIMESTAMP,
    reviewer_id      UUID
);

| Category | Requirement | |----------|-------------| | Performance | Search latency < 2 seconds for 95 % of queries. | | Scalability | Horizontal scaling of search service (e.g., Elasticsearch) and storage (object store). | | Security | All traffic over HTTPS. Signed URLs for downloads. Input sanitization for search queries. | | Privacy | Store only minimal PII (email for requests). Comply with GDPR/CCPA. | | Accessibility | WCAG 2.1 AA compliance for UI (screen‑reader friendly, focus order). | | Internationalization | UI and search support Hindi and English (Unicode). | | Monitoring | Metrics: search latency, download count, error rates, DMCA notices. Alerts on spikes. |

POST /api/books/bookId/download
Authorization: Bearer <jwt>

Response (200)

  "downloadUrl": "https://s3.amazonaws.com/bucket/zk-safar.pdf?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=..."