// Link · 27 May 2026

What the Heck is SmithDB?

LangChain built SmithDB, a purpose-built distributed database in Rust that now powers LangSmith's agent observability. Modern AI agent traces have gotten too big and complex for general-purpose databases, with hundreds of nested spans, multi-modal content, and spans that stay open for hours. SmithDB...

Hacker Noon

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