AI Engineering in Practice10 min read
Modular architectures for agentic AI: 4 layer pattern
How to structure an agentic AI codebase so it survives growth. The 4-layer pattern, the cut lines, and the refactor that keeps a project shippable.
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136 posts in total
AI Engineering in Practice10 min read
How to structure an agentic AI codebase so it survives growth. The 4-layer pattern, the cut lines, and the refactor that keeps a project shippable.
AI Engineering in Practice10 min read
How to instrument an agentic AI service with Prometheus. The 4 metrics that matter, the histogram trap, and the dashboard that surfaces regressions.
LLM Engineering11 min read
Why linear LangChain chains fall over on real agents and how LangGraph's stateful graphs replace them. The state model, loops, and upgrade path.
AI Engineering11 min read
How circuit breakers prevent LLM outages from cascading through your agent. The 3 states, the failure window, and the 50-line implementation.
AI Engineering in Practice9 min read
How to survive LLM provider outages with Tenacity retries and fallback models. The retry policy, the fallback chain, and the 60-line pattern.
AI Engineering11 min read
How to manage context windows in production AI agents. The 4 strategies that keep long sessions bounded without losing critical context.
AI Engineering in Practice11 min read
How to sanitize agent API inputs beyond frontend validation. Prompt injection defense, payload limits, and the 4 layers every agent service needs.
AI Engineering in Practice11 min read
How to version an agentic API without breaking clients. The URL prefix pattern, the deprecation playbook, and when to ship v2.
AI Engineering in Practice10 min read
Why uv replaces pip, pip-tools, and poetry for production agentic AI services. The speed, the lockfile, and the 5-minute migration.
AI Engineering in Practice10 min read
How to wire Langfuse into an agentic AI service for full observability. The trace hierarchy, the decorator pattern, and what to log per span.
LLM Engineering11 min read
How to use sub-graphs in LangGraph to keep complex RAG pipelines sane. The composition pattern, the state isolation rule, and when to split.
LLM Engineering10 min read
How to render a RAG pipeline as a graph with LangGraph StateGraph. The diagram, the state schema, and the debugging workflow that saves hours.

Cofounder of AEOsome.com and Chief Mentor at learnwithparam.com with 14+ years building production systems. I've trained 50+ engineers on AI engineering - these programs distill what actually works into structured paths you can follow at your own pace.
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