Developer Reference

Engineering Notes & Cheatsheets

High-density architectural cheatsheets covering database indexing, caching strategies, memory profiling, and PyTorch tensors.

Notes15 min read

SQL: Complete Step-by-Step Foundation & Advanced Reference

Comprehensive step-by-step SQL reference covering PostgreSQL basics, CRUD, DDL/DML, constraints, string & date functions, joins, subqueries, window functions, and CTEs.

SQLPostgreSQLDatabaseBackendArchitecture

View Cheatsheet

Reference Note25 min read

Data Structures & Algorithms: The Complete Foundation Reference

Comprehensive architectural reference covering memory layout, asymptotic analysis, essential data structures, traversal algorithms, and optimal problem-solving patterns.

DSAAlgorithmsTime ComplexityTreesGraphsDynamic Programming

View Cheatsheet