Three LangGraph Rewrites: Checkpointing Production Agents

1Key Takeaways

• Originally published on AIdeazz — cross-posted here with canonical link.
• Our first LangGraph agent, designed to process inbound support requests, silently dropped 80% of its jobs for two weeks.
• The state object, intended to carry a job_id and customer_query , was being overwritten with an empty dictionary at the start of every new graph execution.
• We only caught it when a customer complained about a missing ticket.