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Yisheng Zhou | Software Engineer IILiang Mou | Sr Staff Software EngineerGabriel Raphael Garcia Montoya | Staff Software EngineerIstvan Podor | Staff Software EngineerIntroductionIn the first post of this series, we introduced Pinterest’s next-generation CDC-based ingestion platform built on Kafka, Flink, Spark, and Iceberg. In production, upstream schemas are constantly evolving, and in a distributed CDC pipeline, schema is not just metadata — it is a cross-system contract spanning ...
Part 2: Planning, Tool Use, and Reflection
Key takeaways
Memory gives an agent continuity. It does not give it judgment. Planning, tool use, and reflection are the three capabilities that turn a well-informed model into a system that can act on a real business process.
Treat the execution plan as an artifact, not a transcript. If you can’t persist it, version it, and pause it for human approval, it isn’t a plan — it’s improvisation with extra steps.
A tool named ‘run a ...
