#system-design

#system-design5

Systems 2026-07-14

[Threads Marketing Agent, Part 3] Multi-Account Engagement Automation with an Anti-Detect Browser — Brain/Hands Split, CDP Driving, Detection-Aware Pacing

VPS as the brain, Mac mini as the hands
Systems 2026-07-06

[Threads Marketing Agent, Part 2] Designing a Generation Pipeline — A 4-Axis Content Model, Queue-Based Scheduling, 3-Layer Attribution

A 4-axis content model, an SQLite queue, and 90% bot clicks
Systems 2026-06-29

[Threads Marketing Agent, Part 1] Designing a Crawler That Beats Three Tiers of Anti-Bot — From TLS Fingerprints to CDP Detection

The real bottleneck was crawling, not the LLM
Scaling 2026-05-29

Scaling QPS 10x in Production: 3 Strategies That Actually Move the Needle

Caching, database tuning, and moving side work off the request
Reliability 2026-03-29

Why You Should Never Use KeyDB as a Pub/Sub Broker for Centrifugo

Five years of hang issues behind a perfect-looking active-replica