FastAPI & Next.js project: Flight Booking App With DevOps. Day 1 - 100 - Master Cursor Pagination! | FastAPI Generics + Next.js | Flight Booking Engine | Day 72

In Day 72, we implement Cursor-Based Pagination to power a lightning-fast "Next / Previous" navigation flow. We are taking the System Design concepts from Day 71 and turning them into a reusable, type-safe Python implementation. We aren't just writing a one-off function. We are using Python Generics (TypeVar, Generic[T]) to build a standardized Pagination Schema that guarantees query speed, no matter how many millions of bookings we have. 💡 In this live build: Generic Response Models: Using Pydantic Generics (CursorPaginatedResponse) to enforce type safety across all endpoints. The Cursor Logic: How to generate secure Base64 tokens for next_cursor and prev_cursor. SQLAlchemy Filters: Replacing slow OFFSET queries with efficient WHERE id cursor lookups. Frontend State: Managing the cursor tokens in Next.js to disable/enable "Next" and "Previous" buttons dynamically. Bidirectional Navigation: Handling the logic to go forward AND backward without losing your place. By the end, you will have a robust pagination engine that scales to millions of rows—proven by code, not just theory. 📘 Watch the full playlist: 👉 https://www.youtube.com/playlist?list=PLdtwawCR2QjmdfhM-7SzDOVGop373bbgW 📂 GitHub Repo (Public Mirror): 👉 https://github.com/KNehe/aero_bound_ventures-public.git 🔥 Subscribe to master High-Performance Backend Engineering. #FastAPI #CursorPagination #DatabasePerformance #PythonGenerics #SystemDesign #NextJS #FullStack