A layered approach to agent evaluation: from deterministic checks and trajectory evals to LLM-as-judge and human review.

Three things that broke in production and exactly how I fixed them

Why we stopped routing agents one step at a time and compiled the full pipeline upfront

How splitting conversation and understanding into two changed everything

Why a single database eventually stops being enough, how sharding splits data across multiple nodes, and why consistent hashing is the elegant solution to the painful problem of adding or removing shards.

What CQRS is and why it separates reads from writes, what Event Sourcing means when you store events instead of state, how they fit together, and the real tradeoffs before you reach for either pattern.

Why Kafka partitions become unequal, what happens when one partition hogs all the work, and the concrete strategies teams use to fix hot keys, rebalance load, and prevent consumer starvation.

Things that bit me building production agents with LangGraph

What Kafka solves when many things happen at once, how streams, topics, partitions, producers, and consumer groups fit together, and why it stays fast, ordered, and durable.

Monolith and microservice fundamentals with pros and cons, how they differ, the role of an API gateway, OAuth vs OpenID Connect, and a concise introduction to event-driven architecture.

Why basic TTL isn't enough, how expiry causes traffic spikes, and practical strategies: jitter, early expiration, mutex locking, SWR, and cache warming, with clear tradeoffs and when to use which.

What the thundering herd problem is, where it occurs, its impact on systems, and practical techniques to prevent or reduce it, with a focus on understanding system behavior and interview relevance.

A real-world engineering lesson on what breaks when React's build-time assumptions disappear, and how compiling JSX at runtime changes the way you think about flexibility, safety, and performance.

An introduction to this section where I'll be sharing tutorials, guides, insights, and learnings from my journey as a developer.