Skill Suites
Code-first guides on AI, DevOps, and shipping software
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Grad School
A browser game where getting good at it and understanding the mathematics are the same activity. Five courses built on Karpathy’s Neural Networks: Zero to Hero: route a gradient backward by hand, train a neuron and watch the loss fall, run attention under a causal mask, aim the query yourself, and cure a sick network from its vitals.
Latest articles
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Replication & Conflict Resolution: The Complete System Design Reference
Single-leader, multi-leader, and leaderless replication, quorums, version vectors, and CRDTs — a complete reference on replication and conflict resolution for interviews.
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Time, Causality & Ordering in Distributed Systems: Complete Reference
How distributed systems order events with no global clock — Lamport clocks, vector clocks, hybrid logical clocks, and TrueTime — explained for…
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Consensus & Consistency Models: The Complete System Design Reference
A deep reference on consensus and consistency models — linearizability, CAP, FLP, Paxos, Raft, and strict serializability — for senior system design…
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Build a PII-Redaction Proxy in Front of Your LLM with Spring Boot
Build a PII-redaction proxy in Spring Boot that strips personal data before it reaches an LLM, forwards only tokenized prompts, and re-hydrates…
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Add SSH Keys to Hostinger for Passwordless Login & Deploys
How to add SSH keys to Hostinger via hPanel or ssh-copy-id for passwordless login and automated deploys, plus a ~/.ssh/config alias and…
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How to SSH into Hostinger Shared Hosting (Enable, Connect, Port 65002)
How to SSH into Hostinger shared hosting: enable SSH in hPanel, find your IP and username, connect on port 65002 from macOS,…
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Deploy an Angular App to Hostinger Shared Hosting with Bitbucket Pipelines (2026)
Automatically deploy an Angular app to Hostinger shared hosting with Bitbucket Pipelines: enable SSH (port 65002), wire keys, build in CI, rsync…
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SSH Config: Multiple Keys for Multiple Hosts (Per-Host SSH Keys)
Use ~/.ssh/config to assign multiple SSH keys to multiple hosts: per-host IdentityFile, IdentitiesOnly to avoid lockouts, and two GitHub accounts on one…
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Rich Lesson Authoring in an LMS: A Block Editor for Sections, Media & Embeds (Part 15)
Add a genuine block editor (Editor.js) to an LMS instructor workspace: lessons as ordered sections with images, video, tables, code and embeds,…
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