{"version":"2.1.299","anchor":"spawn-to-claim-latency-metric","canonical_anchor":"spawn-to-claim-latency-metric","heading":"Cloud sessions measure how long a spare session waits before use","tier":"internal","area":"Cloud Sessions","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.299\/e\/spawn-to-claim-latency-metric","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.299","markdown":"### Cloud sessions measure how long a spare session waits before use\n\nClaude Code now records the time from a spare cloud session starting to it being picked up, using CCR_SPAWN_TIMESTAMP_MS\n\n**What**\n\nWhen a spare cloud session, one started ahead of time so it is ready when needed, is picked up for use, Claude Code now records how long it has been since it started. The start time is read from the `CCR_SPAWN_TIMESTAMP_MS` environment variable, which is a value passed to a program when it starts.\n\n**Why**\n\nThis is a measurement only and does not change how sessions behave.\n\n- Area: Cloud Sessions\n- Names: `CCR_SPAWN_TIMESTAMP_MS`\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 3\/5\n- Scope: individual\n- Heads-up: no"}