[N] LangChain Interrupt 2026 announcements [N]

LangChain just wrapped Day 1 of Interrupt 2026 and announced a few things worth knowing about: SmithDB - A purpose-built distributed database for agent observability. The problem they're solving: agent traces are getting too large and complex for general-purpose databases. SmithDB is built with Rust, Apache DataFusion, and Vortex, designed specifically for multimodal content and long-span tracing. They're reporting P50 latency of 92ms for loading trace trees and 400ms for full-text search, with up to 12x speedup over previous LangSmith performance.