Django Performance Optimization: Fixing Slow APIs with select_related and prefetch_related

🚀 Day 17 – Python API Integration Today I explored the power of Django REST Framework and how it simplifies building RESTful APIs in Python. 🔹 Key takeaways: Understood how Django REST Framework extends Django to build APIs efficiently Created a Django project and app structure (countryapi, countries) Built a Model (Country) to represent data Learned how Serializers convert Django models into JSON Used ModelViewSet to handle CRUD operations automatically Configured DefaultRouter to generate API endpoints 🔹 Implemented API endpoints: GET → Retrieve countries POST → Create new country PUT / PATCH → Update data DELETE → Remove data 💡 What stood out: Django REST Framework reduces a lot of boilerplate by providing built-in tools for serialization, routing, and request handling — making API development faster and more structured. 📌 This is a big step forward in building production-ready backend systems. #Python #DataEngineering #Django #DjangoRESTFramework #APIs #BackendDevelopment #LearningJourney #selfLearning

Optimizing Django Queries: How to Avoid N+1 Problems One of the quickest ways to slow down your Django backend is the classic N+1 query issue. While working on Inboxit, I had to be deliberate about this especially when dealing with relationships between models. The fix I use most often: prefetch_related() It’s perfect for optimizing reverse relationships (when you have a ForeignKey pointing to your model and you need to access related data). Instead of making one query per object (which explodes with more records), prefetch_related fetches all the related data in just two queries one for the main objects and one for the related ones. This small change keeps response times fast and your API scalable as usage grows. Have you run into N+1 issues in your Django projects? What’s your go-to optimization technique? #Django #DRF #Python #BackendDevelopment #QueryOptimization #TechNigeria #webdev

Building Web Applications with Django and PostgreSQL https://lnkd.in/gAfrHDzH #python #tips #skills #bootcamp #development #courses #elearning #world #edtech #facts #usa #uk #software #developer #ai #harisystems

📄⚙️ All-in-One PDF Toolkit using Django | Full-Stack Python Project I built a web-based PDF processing application using Django that allows users to perform multiple operations on PDF files in just a few clicks. 🔹 Features Implemented: ✅ Extract text from PDF files ✅ Rotate PDF pages ✅ Add custom watermark to PDFs ✅ View PDF metadata/details ✅ Merge two PDFs into one ✅ Encrypt PDFs with password protection 💻 Tech Stack: • Python • Django • PyPDF2 • ReportLab • HTML / CSS 💡 This project is part of my journey to convert Python scripts into real-world web applications using Django. Instead of running scripts locally, I’m now building interactive tools that users can access through a browser. It also helped me understand: File handling in web applications Backend processing with Django Working with binary streams (BytesIO) Building multi-functional tools in a single interface 🚀 Moving forward, I plan to integrate more advanced features and deploy these tools for real-world use. GitHub Repo: https://lnkd.in/dgCFWWTB #Python #Django #WebDevelopment #PDFTools #FullStackDevelopment #BackendDevelopment #Programming #BuildInPublic #SoftwareEngineering

Not all Python backend frameworks are the same 🤯 If you're new to backend or just curious how apps are built, here’s a simple breakdown: 🔹 Flask → Lightweight & flexible 👉 You build everything yourself 🔹 Django → Full-stack framework 👉 Comes with admin panel, auth, database tools 🔹 FastAPI → Fast & modern 👉 Built for high-performance APIs 💡 Simple way to understand: Flask = Empty kitchen 🍳 Django = Full restaurant 🍽️ FastAPI = Smart automated kitchen ⚡ Each one is powerful — it just depends on your use case 👉 Which one do you prefer or want to learn? #Python #BackendDevelopment #Django #FastAPI #Flask #WebDevelopment #Programming #TechExplained

Async Programming in Python (asyncio) — Write Faster, Non-Blocking Code Most Python code runs synchronously 👉 One task at a time (slow for I/O-heavy apps) But what if your app could handle multiple tasks simultaneously without waiting? That’s where asyncio comes in. 🧠 What is Async Programming? Async allows your program to: ✔️ Start a task ✔️ Pause it when waiting (API, DB, file) ✔️ Switch to another task 👉 Result: Better performance for I/O operations ⚙️ Basic Example import asyncio async def fetch_data(): print("Fetching...") await asyncio.sleep(2) print("Done!") asyncio.run(fetch_data()) 👉 await = pause here, let other tasks run 🔥 Why It Matters Async is widely used in: ✅ APIs (FastAPI, Django async views) ✅ Web scraping ✅ Real-time apps (chat, notifications) ✅ Microservices ❌ Not useful for CPU-heavy tasks 👉 Best for I/O-bound operations only #Python #AsyncIO #BackendDevelopment #Performance #Django #FastAPI

Django Forms vs ModelForms If you're building with Django, you've probably seen Forms and ModelForms… but knowing when to use each is what makes your code cleaner and more efficient 👇 Django Forms...Great for: - Custom forms (contact forms, search forms) - Data not tied to the database - Advanced/custom validation logic Django ModelForms...Great for: - Database-driven forms - CRUD operations (Create, Update, Delete) - Rapid development with less code Use Forms when flexibility matters. Use ModelForms when working directly with models to save time and avoid repetition. Which one do you use more in your projects? #Django #Python #WebDevelopment #BackendDevelopment

Day 02 of 30 | Django MVT Pattern 🐍 Before writing any code in Django, you need to understand how it thinks. MVT = Model + View + Template. Every request your user makes follows this exact flow: → Browser sends a request → urls.py routes it to the right View → View asks the Model for data → Model queries the database → View sends data to the Template → Template renders HTML and returns it to the browser I made a video explaining each part. My English is A2. The diagram helps. 👀 #Django #Python #30DaysOfDjango #LearningInPublic #Developer #SaaS

🐍📰 Get Started With Django Part 3: Django View Authorization This tutorial covers how to restrict your web pages to users with different roles through Django view authorization. #python