Langfuse v4: Planning the Move to the Observations Data Model

Langfuse v4 makes observations the main table. What breaks, the Cloud cutover on 16 November 2026, and a safe self-hosted upgrade path.
Upgrading Self-Managed ClickHouse in 2026: Breaking Changes from 26.3 LTS to 26.8 LTS and 26.9

ClickHouse 26.3 to 26.9 removes features, changes defaults and tightens grants. What can stop a server starting, and how to plan the upgrade.
ClickHouse Agents and Remote MCP: Governing Agentic Analytics on ClickHouse Cloud

ClickHouse Cloud now runs AI agents and exposes a remote MCP server. What each does, how access is controlled, and what to decide before enabling them.