Engineering Blog & Tech Deep Dives

Kashinath Chavan • Interview Prep & Database • Aug 22

SQL for Power Plant Performance Monitoring: Querying Time-Series Data with Window Functions

Monitoring power plant efficiency requires analyzing time-series data from sensors. Learn how to use window functions to calculate rolling averages, detect anomalies, and optimize query performance with large datasets.

⏱️ 3 min read 👁️ 15 views 👏 0 claps ⭐ Featured

SQL for Power Plant Performance Monitoring: Querying Time-Series Data with Window Functions

Kashinath Chavan • Data Structures & Algorithms • Aug 22

Python Practice Programs & Logic Building: 100+ Essential Coding Exercises

Master coding round interviews with 100+ solved logic problems: Palindromes, Fibonacci series, Matrix transformations, Armstrong numbers, and recursive tree traversals.

⏱️ 2 min read 👁️ 231 views 👏 50 claps ⭐ Featured

Python Practice Programs & Logic Building: 100+ Essential Coding Exercises

Kashinath Chavan • Interview Prep & Database • Aug 20

SQL for Financial Transaction Analysis: Fraud Detection with Recursive CTEs

Detecting fraudulent transactions in real-time requires tracing complex money flow paths. Learn how recursive CTEs can trace transaction trees, find circular patterns, and flag suspicious activity.

⏱️ 3 min read 👁️ 10 views 👏 0 claps ⭐ Featured

SQL for Financial Transaction Analysis: Fraud Detection with Recursive CTEs

Kashinath Chavan • Interview Prep & Database • Aug 18

SQL for E-commerce Inventory: Flash Sales, Low Stock Alerts, & Stock Reconciliation

Running a flash sale requires real-time inventory tracking. Learn how to prevent overselling, reconcile stock across warehouses, and alert on low inventory with production-ready SQL queries.

⏱️ 3 min read 👁️ 7 views 👏 0 claps

SQL for E-commerce Inventory: Flash Sales, Low Stock Alerts, & Stock Reconciliation

Kashinath Chavan • Interview Prep & Database • Aug 17

SQL for Healthcare Analytics: Patient Wait Times, Readmission Rates & HIPAA-Compliant Aggregations

Healthcare data analysis requires careful handling of PHI. Learn how to compute wait times, readmission rates, and resource utilization while maintaining privacy and compliance.

⏱️ 2 min read 👁️ 6 views 👏 0 claps

SQL for Healthcare Analytics: Patient Wait Times, Readmission Rates & HIPAA-Compliant Aggregations

Kashinath Chavan • Database & SQL • Aug 16

PostgreSQL Query Optimization: Understanding B-Tree Indexes, EXPLAIN ANALYZE & Buffer Hits

Demystify query performance in PostgreSQL. Learn how sequential scans, index scans, bitmap heap scans, and memory work behind every high-speed SQL query.

⏱️ 1 min read 👁️ 260 views 👏 64 claps

PostgreSQL Query Optimization: Understanding B-Tree Indexes, EXPLAIN ANALYZE & Buffer Hits

Kashinath Chavan • Career & Git Roadmaps • Aug 16

Complete Python & Django Full-Stack Developer Roadmap for Freshers (2026)

A comprehensive step-by-step career guide for college students and fresh graduates to transition from zero coding knowledge to a hired Full-Stack Python Django Software Engineer.

⏱️ 1 min read 👁️ 445 views 👏 98 claps

Complete Python & Django Full-Stack Developer Roadmap for Freshers (2026)

Kashinath Chavan • Interview Prep & Database • Aug 14

SQL for Travel Booking: Finding Cheapest Multi-City Itineraries with Recursive Queries

Building a flight search engine requires finding optimal routes. Learn how to use recursive CTEs to explore city graphs, compute total prices, and find the cheapest multi-city itineraries.