MIR-1159

Ephemeral deploys launching multiple sandboxes

Done public

evan Opened May 20, 2026 Updated May 27, 2026

MIR-1159: keep ephemeral pools at 1 sandbox and fix lease URL races

On garden, our using of ephemeral deploys for mirendev-preview resulted in a pool that had a desired count of 8, which is clearly wrong there should just be one. The logic for managing the pool for ephemeral deploys is clearly wrong.

  - id: dev.miren.compute/sandbox_pool.current_instances
    value: 8
  - id: dev.miren.compute/sandbox_pool.desired_instances
    value: 8