Optimizing Keyword-Driven Query System for Improved Throughput

A “small bug” once cost almost a full day. Not because it was complex. Because it was invisible. Everything looked fine: • API responses were correct • database had valid data • no errors in logs But users were seeing wrong results. After hours of tracing, the issue was: A single condition checking the wrong type. Python if status == "1": The actual value was an integer. So the condition silently failed. No crash. No warning. Just wrong behavior. That day changed how I write backend code. Now I double-check: • data types • implicit conversions • assumptions Because real bugs are rarely dramatic. They’re subtle. What’s the smallest mistake that caused the biggest issue for you? #PythonDeveloper #Debugging #BackendBugs #SoftwareEngineering #DjangoDeveloper #RealWorldCoding #DevLife

𝗙𝗮𝘀𝘁𝗔𝗣𝗜 𝗶𝘀𝗻'𝘁 𝗳𝗮𝘀𝘁 𝗯𝗲𝗰𝗮𝘂𝘀𝗲 𝗼𝗳 𝗙𝗮𝘀𝘁𝗔𝗣𝗜.  𝗜𝘁'𝘀 𝗳𝗮𝘀𝘁 𝗯𝗲𝗰𝗮𝘂𝘀𝗲 𝗼𝗳 𝘄𝗵𝗮𝘁'𝘀 𝘂𝗻𝗱𝗲𝗿𝗻𝗲𝗮𝘁𝗵. Most people stop at "FastAPI is faster than Flask." Few ask 𝘸𝘩𝘺. Here's what's actually happening: 𝗙𝗹𝗮𝘀𝗸 runs on 𝗪𝗦𝗚𝗜. One request = one thread = blocked until done.  Your thread waits while the DB responds. It does nothing. Just sits there. 𝗙𝗮𝘀𝘁𝗔𝗣𝗜 runs on 𝗔𝗦𝗚𝗜. One thread handles 𝘵𝘩𝘰𝘶𝘴𝘢𝘯𝘥𝘴 of connections. While one request waits for DB, the thread picks up another. No idle time. But FastAPI doesn't do this alone. The real stack: • 𝗨𝘃𝗶𝗰𝗼𝗿𝗻 — the ASGI server (built on uvloop) • 𝗦𝘁𝗮𝗿𝗹𝗲𝘁𝘁𝗲 — the async engine (handles requests, WebSockets, middleware)  • 𝗙𝗮𝘀𝘁𝗔𝗣𝗜 — the developer layer (validation, docs, type hints) Think of it this way: Starlette = 𝘵𝘩𝘦 𝘦𝘯𝘨𝘪𝘯𝘦. FastAPI = 𝘵𝘩𝘦 𝘥𝘢𝘴𝘩𝘣𝘰𝘢𝘳𝘥.  Uvicorn = 𝘵𝘩𝘦 𝘧𝘶𝘦𝘭. Flask was built for a 𝘀𝘆𝗻𝗰𝗵𝗿𝗼𝗻𝗼𝘂𝘀 world. FastAPI was built for an 𝗮𝘀𝘆𝗻𝗰-𝗳𝗶𝗿𝘀𝘁 world. The speed difference isn't a feature.  It's a 𝗳𝗼𝘂𝗻𝗱𝗮𝘁𝗶𝗼𝗻 difference. Next time someone says "FastAPI is fast", ask them: 𝘐𝘴 𝘪𝘵 𝘍𝘢𝘴𝘵𝘈𝘗𝘐, 𝘰𝘳 𝘪𝘴 𝘪𝘵 𝘚𝘵𝘢𝘳𝘭𝘦𝘵𝘵𝘦? #FastAPI #Flask #Starlette #Python #AsyncProgramming #BackendEngineering #SystemDesign #SoftwareEngineering

🚀 Day 9/10 — Optimization Series Config-Driven Pipelines (Avoid Hardcoding) 👉 Basics are done. 👉 Now we move from working code → optimized code. You build a pipeline… It works perfectly… But you hardcode everything 😐 file_path = "data/sales_2024.csv" api_url = "https://lnkd.in/gsfHEDWP" 👉 Looks simple… but becomes a problem later. 🔹 The Problem Hard to update values ❌ Not reusable ❌ Breaks across environments ❌ 🔹 What is Config-Driven Approach? 👉 Move all dynamic values to a config file 🔹 Example (config.json) { "file_path": "data/sales_2024.csv", "api_url": "https://lnkd.in/gsfHEDWP" } 🔹 Use in Python import json with open("config.json") as f: config = json.load(f) file_path = config["file_path"] api_url = config["api_url"] 🔹 Why This Matters Easy to update 🔄 Reusable pipelines ♻️ Environment-friendly 🌍 🔹 Real-World Use 👉 Dev / Test / Prod configs 👉 Data pipelines 👉 API integrations 💡 Quick Summary Config-driven = flexible + scalable pipelines 💡 Something to remember If your values change often… they don’t belong in your code. #Python #DataEngineering #LearningInPublic #TechLearning

🚀 Efficient Duplicate Detection with Hash Sets | LeetCode Today, I tackled the Contains Duplicate problem. While the brute force approach is often the first instinct, optimizing for time complexity is where the real fun begins! 💡 The Problem: Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct. ⚡ My Approach: I utilized a Hash Set to track elements as I traversed the array. This allows for near-instantaneous lookups compared to nested loops. 👉 The Logic: Initialize an empty set seen. Iterate through the array once. For each number, check: "Have I seen this before?" (Is it in the set?) If Yes → Return True immediately. If No → Add the number to the set and keep moving. 🔥 Complexity Analysis: ⏱ Time Complexity: $O(n)$ – We only pass through the list once. 📦 Space Complexity: $O(n)$ – In the worst case (all unique elements), we store all $n$ elements in the set. 🏆 The Result: ✔️ Accepted: All 77 test cases passed. ✔️ Performance: 9 ms runtime, beating 73.44% of Python3 submissions! 📌 Key Takeaway: Using a Set turns a potential $O(n^2)$ search into a sleek $O(n)$ operation. Choosing the right data structure isn't just about passing tests; it's about writing scalable, "production-ready" code. 💻 Tech Stack: #Python | #DataStructures | #Algorithms #leetcode #dsa #coding #programming #softwareengineering #100DaysOfCode #pythonprogramming #tech #growthmindset

Most operational software I encounter wasn't built to talk to anything else. With FastAPI, you can build a lightweight API layer on top of almost any system, whether it's a database, a legacy application, or a third-party platform. Once that layer is in place, other systems can pull data from it, push data to it, or trigger actions automatically. The result isn't just a technical improvement. It means processes that used to require manual exports, emails back and forth, or someone running a report every morning can simply run on their own. The only thing required is a small Python application. Deployed, maintained, and adapted when business requirements change. No large dev team needed. How many manual actions does your most painful data process require? Drop a number below! D-Data #Python #FastAPI #DataEngineering #SoftwareEngineering #BusinessAutomation #APIIntegration

🎯 Precision Engineering: Beyond Basic Queries "A great API doesn't just give you data—it gives you the right data, or a clear reason why it can't. 🛡️ Today I expanded my TodoApp by implementing Path Parameters. Moving beyond fetching 'all' records, I’ve added logic to retrieve specific tasks by their ID. Key technical highlights from this update: ✅ Input Validation: Used FastAPI’s Path to ensure only valid IDs (greater than 0) are processed. ✅ Robust Error Handling: Integrated HTTPException to return a clean 404 Not Found status if a user requests an ID that doesn't exist. ✅ Clean Code: Refactored using Annotated dependencies to keep the route handlers lean and readable. Building a backend isn't just about the 'Happy Path'—it's about handling every edge case with precision. Next: Implementing POST requests to allow users to create their own tasks! 🚀" #FastAPI #Python #BackendDevelopment #WebAPI #CleanCode #SoftwareEngineering

They say 90% of software engineering is debugging, and today I definitely felt that! 😂 After a marathon session of untangling server conflicts, navigating API versioning updates, and restructuring database schemas on the fly, I am thrilled to finally share my latest project: NutriScan-AI. 🚀🍏 I wanted to build something that bridged the gap between raw data and practical, everyday AI. NutriScan-AI is a full-stack web application that allows users to snap a photo of any meal and instantly receive a complete nutritional breakdown and ingredient analysis. 🧠 How it works under the hood: Frontend: A clean, dark-mode UI built with HTML/CSS that handles user image uploads. Backend: A robust Python (Flask) server handling the API routing and logic. AI Integration: Integrated Google's Gemini 2.5 Flash Vision API to process the image pixels and accurately identify complex food items. Database: Engineered a PostgreSQL relational database to securely log user scans and perform fuzzy-search lookups for detailed macro-nutrients (Calories, Protein, Carbs, Fat). git - https://lnkd.in/gW7VqJrM Always learning, always building. On to the next challenge! #ArtificialIntelligence #Python #Flask #PostgreSQL #FullStackDevelopment #GeminiAI #SoftwareEngineering #TechJourney #StudentDeveloper

🚀 rst-queue v0.1.6: Scaling Terabytes with Megabytes In a world of bloated data systems, we often find ourselves throwing more hardware at software problems. But what if our tools were engineered to be small, grounded, and incredibly powerful? Introducing rst-queue v0.1.6, a high-performance async queue system built for the modern developer who values efficiency above all else. Inspired by the psychology of the Leafcutter Ant, this project is the first major release from the Datarn initiative. Why rst-queue? Most Python-based queues are limited by the Global Interpreter Lock (GIL) and high memory overhead. rst-queue is different. By using Rust and the Crossbeam framework, we’ve built a system that: ⚡ Bypasses the GIL: Achieve true parallelism with native Rust worker pools. 🐜 Microscopic Footprint: 30-50x less memory usage than traditional message brokers. 🛡️ Dual Modes: Choose between AsyncQueue (In-memory for 1M+ items/sec) or the new AsyncPersistenceQueue (Durable storage with Sled KV). Grounded in the Kernel The secret to our speed is "Simple OS Layering." We’ve designed rst-queue to sit as close to the OS kernel as possible, utilizing direct system calls and memory-mapped I/O. This isn't just a library; it's a high-velocity data crossing (Taran) for your most critical applications. Get Started in Seconds We believe in zero-setup excellence. You can add high-performance queuing to your Python project with a single command: Bash pip install rst-queue==0.1.6 Join the Datarn Movement At Datarn, we are building a suite of "Small but Mighty" tools for data-intensive domains like B2B e-commerce and real-time analytics. rst-queue is just the beginning. Explore the project on PyPI: https://lnkd.in/d54yqdea Contribute on GitHub: https://lnkd.in/d_x3E-zj #Python #RustLang #DataEngineering #OpenSource #Efficiency #Datarn #PerformanceOptimization #SoftwareArchitecture

𝗗𝗮𝘆 𝟲𝟲/𝟳𝟱 | 𝗟𝗲𝗲𝘁𝗖𝗼𝗱𝗲 𝟳𝟱 𝗣𝗿𝗼𝗯𝗹𝗲𝗺: 714. Best Time to Buy and Sell Stock with Transaction Fee 𝗗𝗶𝗳𝗳𝗶𝗰𝘂𝗹𝘁𝘆: Medium 𝗣𝗿𝗼𝗯𝗹𝗲𝗺 𝗦𝘂𝗺𝗺𝗮𝗿𝘆: Given an array prices where prices[i] represents the stock price on day i, and a transaction fee, find the maximum profit you can achieve. Constraints: • You can make multiple transactions • You must sell before buying again • Each transaction incurs a fixed fee 𝗠𝘆 𝗔𝗽𝗽𝗿𝗼𝗮𝗰𝗵: This problem is solved using Dynamic Programming with state optimization. Instead of maintaining a full DP table, we track two states: • buy → Maximum profit when holding a stock • sell → Maximum profit when not holding a stock • Initialization: – buy = -∞ (we haven’t bought yet) – sell = 0 • Transition for each price: – buy = max(buy, sell - price) (Either keep holding or buy today) – sell = max(sell, buy + price - fee) (Either keep not holding or sell today after paying fee) • Final answer: sell This works because at every step, we decide whether to take an action (buy/sell) or skip, while always keeping track of the best possible profit. 𝗖𝗼𝗺𝗽𝗹𝗲𝘅𝗶𝘁𝘆 𝗔𝗻𝗮𝗹𝘆𝘀𝗶𝘀: • Time Complexity: O(n) • Space Complexity: O(1) 𝗞𝗲𝘆 𝗧𝗮𝗸𝗲𝗮𝘄𝗮𝘆: Stock problems often reduce to state machines. Tracking “holding” vs “not holding” states and optimizing transitions can simplify even complex trading constraints like transaction fees. 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻 𝗟𝗶𝗻𝗸: https://lnkd.in/gz6hgkXw #Day66of75 #LeetCode75 #DSA #Java #Python #DynamicProgramming #Greedy #MachineLearning #DataScience #ML #DataAnalyst #LearningInPublic #TechJourney #LeetCode

Day 7/30 🔹 Problem: Split expenses among friends (equal & custom split) 🔹 What I focused on today: Handling multiple scenarios based on user choice 🔹 My Thinking Process: Take total expense and number of people Ask user how they want to split (equal or custom) If equal → divide total by number of people If custom → take individual contributions 👉 Same problem, different approaches based on user need 🔹 Inputs I used: Total expense Number of people Choice (equal/custom) Individual amounts (for custom split) 🔹 Code: total = float(input("Enter total expense: ")) people = int(input("Enter number of people: ")) choice = input("Enter '1' for equal split or '2' for custom split: ") # Equal Split if choice == "1":   share = total / people   print("Each person should pay:", share) # Custom Split elif choice == "2":   sum_amount = 0   for i in range(people):     amount = float(input("Enter amount paid: "))     sum_amount = sum_amount + amount   if sum_amount == total:     print("Expenses match the total.")   else:     print("Amounts do not match total.") else:   print("Invalid choice") 🔹 Example: Total = 1000, People = 4 Equal → Each pays 250 🔹 Key Takeaway: Real-world problems often need flexible logic to handle different scenarios, not just one fixed solution #Day7 #Python #30DaysOfCode #LearningInPublic #DataAnalytics #ProblemSolving