Stability & Reliability
A vocabulary for state, lifecycle, ownership, and predictable interfaces.
Stability is a relationship
A stable state is one in which the selected package, device identity, interface, resources, and lifecycle assumptions remain coherent. It is not a universal rating of a product or an assurance about every workload.
Reliability depends on transitions
Start, idle, suspend, resume, removal, and replacement each change which requests and resources are valid. A stack is easier to reason about when every transition has a clear owner and completion signal.
State labels carry evidence
Enumerated, started, pending, suspended, rejected, and completed describe relationships between layers. A device can be present while a function is not active, so state should always include its subject.
Preserve what is known
Package identity, interface role, resource ownership, and the relevant transition provide more reliable reference material than an unexplained label. The library describes these conditions without presenting repair or diagnostic procedures.
Reference facts
- Stable state
- A coherent relationship among identity, package, interface, resources, and lifecycle.
- Reliability lens
- Defined transitions, ownership, status, and boundaries.
Questions and answers
Does stability mean no errors can occur?
No. It describes a coherent active relationship and does not prove every edge condition or optional feature.
Why attach a subject to a state?
“Present,” “started,” or “pending” can describe a device, interface, request, service, or queue. The subject makes the statement meaningful.