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Claude Code Changelog Details Updates to Memory, Telemetry, and Gateway Configuration

Recent updates to Claude Code include new warnings for critical memory usage, enhanced OpenTelemetry tracing, and configurable PostgreSQL connection timeouts for Claude applications.

By Illumora Editorial

Source · Sep 17, 2026, 12:12 AM · On Illumora · Sep 17, 2026, 12:18 AM

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Read the source →Claude Code What's New + releases — Claude Code changelog - Claude Code Docs
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The Claude Code changelog outlines several updates focused on system stability, observability, and user experience. These changes address how the system manages memory, reports telemetry data, and handles database connections.

Key Points

  • A visible warning now appears when memory usage becomes critical, providing steps to free memory or restart safely.
  • The CLAUDE_CODE_MCP_STARTUP_WAIT_MS setting has been added to control the waiting period for connecting MCP servers during the first non-interactive turn.
  • An effort attribute has been added to the claude_code.llm_request OpenTelemetry trace span, aligning with the api_request event.
  • The claude_code.managed_settings_resolved OpenTelemetry event now includes managed-settings sources and policy helper state, with redacted settings and digests available via OTEL_LOG_MANAGED_SETTINGS=1.
  • store.connect_timeout_seconds has been added to the Claude apps gateway config to adjust the PostgreSQL connection timeout, defaulting to 5 seconds.
  • The enduser.sub (IdP subject) is now included in telemetry sent by Claude Desktop and Cowork through a Claude apps gateway.
  • A Claude apps gateway warning now appears when a replica exceeds 256 open requests sent upstream.
  • Click-to-expand functionality has been added for collapsed teammate and agent messages in fullscreen mode.

Context

According to the Claude Code changelog, these updates aim to improve the robustness and diagnostic capabilities of the platform. The enhancements range from user-facing interface improvements to deeper system-level configurations and telemetry reporting.

Why It Matters

These updates provide builders with more control over system behavior and enhanced visibility into operations. The changes can help in diagnosing performance issues, monitoring system health, and customizing deployment configurations for Claude applications.

What To Do

  • Review the Claude Code changelog for specific details on each update.
  • Note the new CLAUDE_CODE_MCP_STARTUP_WAIT_MS setting for managing startup wait times.
  • Examine the updated OpenTelemetry trace spans and events for enhanced observability.
  • Adjust store.connect_timeout_seconds in the Claude apps gateway config if PostgreSQL connection issues are observed.
  • Watch for memory usage warnings and follow the recommended steps to maintain system stability.