Modal launches Sticky Sessions: serverless containers that keep state across requests

graceisford · x · 2026-10-31

Modal's new Sticky Sessions route every request in a session to the same container, built on low-latency Modal Servers via a @modal.sessioned() decorator — targeting voice agents, streaming speech-to-text, and multiplayer games. The post also recounts how Phonic stuck with Modal thanks to sticky routing and hands-on support, with engineers debugging infra together until 2 AM.

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