Hussein Nasser Courses

B-Tree vs B+Tree in Production Database Systems

Explore practical B-Tree and B+Tree implementations in production databases like PostgreSQL and MySQL, understanding performance benefits and real-world considerations.

• YouTube
• 42 minutes
• Self-Paced
• Free Video

WebTransport is a Game Changer Protocol

Discover WebTransport's revolutionary approach to web communication, exploring its multiplexing capabilities, real-time bidirectional streaming, and advantages over WebSockets and gRPC.

• YouTube
• 31 minutes
• Self-Paced
• Free Video

Node.js HTTP Module - Understanding Connection and Request Events

Dive into Node.js HTTP module fundamentals, exploring connection events, request handling, and streaming through practical examples with curl, browsers, and telnet.

• YouTube
• 26 minutes
• Self-Paced
• Free Video

Long Polling - Backend Communication Techniques

Explore backend communication techniques including polling, pushing, and long polling with their pros and cons in this engineering-focused episode.

• YouTube
• 26 minutes
• Self-Paced
• Free Video

Primary Key vs Secondary Key - What You Probably Didn't Know

Uncover the crucial differences between primary and secondary keys and their impact on database performance in this focused technical discussion.

• YouTube
• 11 minutes
• Self-Paced
• Free Video

Bloat in Databases

Discover how database bloat impacts performance and learn techniques to identify, prevent, and resolve storage inefficiencies in your database systems.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

HTTP/3 over QUIC - HPACK and QPACK

Explore HTTP/3's evolution with QUIC protocol, examining HPACK and QPACK compression techniques for modern web performance optimization.

• YouTube
• 13 minutes
• Self-Paced
• Free Video

Key vs Non-Key Column Database Indexing

Discover how key vs non-key column indexing works and learn to boost database performance by strategically adding non-key columns to your indexes.

• YouTube
• 17 minutes
• Self-Paced
• Free Video

Asynchronous IO in Postgres 18 - The Backend Engineering Show

Explore Postgres 18's groundbreaking asynchronous IO features including worker and io_uring modes, comparing sync vs async calls and uncovering performance improvements for database operations.

• YouTube
• 40 minutes
• Self-Paced
• Free Video

AWS DNS Outage Analysis - Why the DNS Failed in October 2025

Uncover the root cause behind AWS's major DNS outage on October 19, 2025, analyzing DynamoDB failures, EC2 errors, and network load balancer issues in this detailed breakdown.

• YouTube
• 23 minutes
• Self-Paced
• Free Video

The Role of CPU in the Kernel

Understand how the CPU operates within the kernel, exploring its fundamental role in operating system architecture and process management.

• YouTube
• 11 minutes
• Self-Paced
• Free Video

PostgreSQL 18 Asynchronous I/O Methods

Discover Postgres 18's new asynchronous I/O methods and their impact on database performance optimization in this technical deep dive.

• YouTube
• 22 minutes
• Self-Paced
• Free Video

Page Faults - Understanding Memory Management in Operating Systems

Explore page faults in operating systems: virtual memory, VMA areas, kernel mode, and various fault types including first access, stack expansion, CoW, and swap faults.

• YouTube
• 47 minutes
• Self-Paced
• Free Video

5 Backend Design Patterns for Managing Threads and Sockets

Master 5 essential backend design patterns for managing threads and sockets, from single-threaded to load-balanced multi-listener architectures for scalable applications.

• YouTube
• 45 minutes
• Self-Paced
• Free Video

All Kernel Page Faults Explained

Understand kernel page faults: demand paging, copy-on-write, stack growth, and memory protection mechanisms in operating systems.

• YouTube
• 19 minutes
• Self-Paced
• Free Video