·10 min read
AI Agent Memory Architectures: Short-Term, Long-Term, and Checkpointing — What Interviews Actually Test
Every agent demo dies the same death in production: it forgets. Context windows overflow, sessions end, processes crash. Designing agent memory — working context, episodic recall, durable checkpoints — is now a standard AI system design interview topic. Here is the architecture, layer by layer.
·9 min read
LangGraph Tutorial: Building Stateful, Multi-Step AI Agent Workflows (Free)
Plain LangChain chains run in a straight line. Real agents loop, branch, and retry. LangGraph models an agent as an explicit graph with shared state — here is how the core pieces fit together, with a minimal worked example.