# Runtime Model (https://jackin.tailrocks.com/reference/runtime/)



* **[Runtime Instance Model](/reference/runtime/runtime-instance-model)** — vocabulary, invariants, lifecycle statuses, and the launch and hardline decision models.
* **[Instance & Resource Naming](/reference/runtime/instance-resource-naming)** — how container names, Docker resources, image names, state directories, and cache paths are derived.
* **[Configuration File](/reference/runtime/configuration)** — `config.toml` schema, storage locations, and persisted state.
* **[Schema Versions](/reference/runtime/schema-versions)** — config/workspace/manifest versioning, migration timeline, and the version format.
* **[Run Diagnostics](/reference/runtime/diagnostics)** — per-run JSONL event schema, container lifecycle tracking, stage timings, and how to use the run ID for crash triage.