Optimize Laravel queries using SQL JSON aggregation - reduce multiple relation queries to a single SQL statement

A security and performance inspector for Django & DRF. Features static analysis, config checks, N+1 query detection, and SARIF support for GitHub Code Scanning.

An end-to-end business analytics SQL portfolio built on a custom e-commerce database — designed to answer real business questions about customers, revenue, retention, and product performance using advanced SQL techniques.

Reduce multi-relation Doctrine queries to a single SQL statement using JSON aggregation. Solves Doctrine's N+1 problem.

Database Reliability Engineering platform for HA/DR, 100TB+ migrations, performance guardrails, and self-healing data systems.

AI Query Optimizer Report

A curated knowledge base and second brain for MySQL architecture, query optimization, and database administration. Structured for deep learning via Obsidian.

Documentation-as-Code knowledge base for Platform Engineering: Linux systems, backend development (Java/Python/SQL), infrastructure (Docker/CI-CD), and LTS-safe operations runbooks.

19 production-ready PostgreSQL queries solving real e-commerce analytics challenges. Advanced SQL techniques: CTEs, window functions, complex joins & stored procedures.

Personal portfolio showcasing end-to-end projects in Backend Development, Big Data Pipelines, and BI. Focused on Python, PySpark, Node.js, and SQL optimization.

An enterprise-grade, multi-vendor e-commerce platform built with Django & DRF. Features dual JWT/Session auth, an asynchronous cart API, Khalti payment integration, and highly optimized SQL queries (zero N+1 issues).

🗄️ IBM Relational Database Administrator with GenAI Certificate Portfolio – A comprehensive collection of projects, labs, and assignments showcasing expertise in relational database administration, 🏘️data warehousing, 🔁ETL pipelines, and 🤖Generative AI integration for modern database management.

Scalable ETL pipeline and PostgreSQL optimization for 40M+ records. Features memory-efficient Python preprocessing and B-Tree indexing for a 95% reduction in query latency.

Sistema web para mineração e consulta de slow_logs do MySQL.

Querying, data manipulation, performance optimization, and AWS-specific SQL

Fast C extension for grouping consecutive monotonic sequences into ranges. O(n), works with any Comparable+succ type. Useful for compacting large IN() clauses in SQL.

Spring Boot demo comparing JPA lazy loading (N+1 problem) vs EntityGraph optimization. Shows performance difference between 11 queries vs 1 query for Books-Authors many-to-many relationship. Includes query counting, tests, and metrics.

PostgreSQL query performance optimization using indexing

SQL performance analysis and optimization advisor with SQLMesh integration

Interactive Data Analytics Dashboard for German Crime Victim Statistics (2023-2024). High-performance visualization of 430k+ records using PHP, MySQL, and Chart.js.