Rachel.
Senior Full-stack Developer specializing in backend systems. Expert in database optimization, asynchronous programming in Python, and building resilient API architectures.
All Articles by Rachel
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Drizzle ORM Schema & Queries Cheatsheet: The Complete Reference
A comprehensive reference for Drizzle ORM schemas, relationships, query builder APIs, and advanced migrations.
PyTorch & CUDA ML Operations Cheatsheet: The Complete Reference
Optimize deep learning workloads: PyTorch tensor manipulations, CUDA memory management, multi-GPU training, and mixed precision.
Pandas Dataframe & Operations Cheatsheet: The Complete Reference
A comprehensive reference for Pandas: dataframes, series, indexing, merging, grouping, aggregations, and high-performance optimizations.
NumPy Array Manipulations Cheatsheet: The Complete Reference
Master NumPy: array initialization, indexing, slicing, broadcasting, linear algebra, and performance tuning.
FastAPI & Pydantic v2 Boilerplate Cheatsheet: The Complete Reference
Build high-performance APIs: FastAPI routers, Pydantic v2 models, dependency injection, async database integration, and security.
uv Cheat Sheet: The Fast Python Package Manager (2026)
Complete uv reference — install packages, manage projects, run scripts, pin Python versions, and migrate from pip, poetry, and pyenv with working commands.
ClickHouse Cheat Sheet: Commands, Schema Design & Performance
Complete ClickHouse reference — SELECT patterns, aggregations, array functions, window functions, schema design, materialized views, row-level security, and performance tuning in 2026.
PostgreSQL Performance Tuning: Query Plans & Connection Pooling
Practical PostgreSQL tuning guide: read EXPLAIN ANALYZE, fix slow queries, use PgBouncer for pooling, and optimize autovacuum for high-performance databases.
Python Type Hints: A Practical Guide for Real Codebases
Use Python type hints effectively with annotations, generics, and Pydantic. Learn to avoid common production gotchas and master tools like mypy and pyright.
Database Indexing: B-trees, Composite Indexes & Performance
Learn how database indexes work, from B-trees to partial indexes. Understand composite index order and how to use EXPLAIN ANALYZE for better performance.
Python Async/Await: The Complete Guide for Developers
Master Python asyncio, including async/await syntax, event loops, and concurrent execution. Learn real-world patterns to build production-ready async systems.
AI-Assisted Eloquent: Database Design with Laravel Boost
Leverage Laravel Boost and AI to generate migrations, design Eloquent relationships, and optimize database schemas. A complete Laravel 13 AI development guide.
PostgreSQL JSONB: Query Patterns & Performance Optimization
Master PostgreSQL JSONB — operators, indexing, querying deep data, aggregation, and performance tuning. Real-world patterns for modern applications.
How to Use SendGrid SMTP Server for Sending Email
SendGrid SMTP settings, API key setup, and code examples for PHP, Python, and Node.js — send transactional email through Twilio SendGrid in 2026.
How to Use Zoho Mail SMTP Server for Sending Email
Zoho Mail SMTP settings for free and paid plans — server address, ports, app-specific password setup, and PHP, Python, and Node.js code examples for 2026.
Testing and Debugging Agent Skills Before You Deploy
Skills that work alone fail differently inside an agent loop. Unit test your tools, mock AI calls, and debug the full tool_use cycle in Node.js.