Reference · Glossary

Glossary

Term	Meaning in Micros
Service	Native application code with a lifecycle and declared requirements.
Service instance	One admitted execution of a service, with its worker, state, and owned resources.
Application / graph	The selected services, settings, resource grants, and channel bindings managed together.
Kernel	Shared runtime code that manages service lifecycle, resources, channels, and supervision.
Supervisor	The runtime task that independently checks whether active service work has exceeded its deadline.
Resident base	The kernel, target integration, and enabled management facilities installed on a device.
ABI	The binary contract used by independently compiled service and kernel code.
Platform interface / HAL	Operations implemented by a target adapter beneath the shared kernel.
Arena	Per-instance memory retained between lifecycle hooks and callbacks.
Handle	A checked reference to an opened, owned resource such as a timer or channel endpoint.
Publication / subscription	A service's declared write/read access to a channel.
Channel	Bounded typed-message storage with a declared interface and retention policy.
Coordination	State, action, and event semantics with explicit endpoint routing and lifetime rules.
Composition	Offline validation and resolution of a unit’s selected services, settings, hardware and channels.
Unit recipe	Complete hardware and application input for one device; authored directly or emitted by composition.
Candidate	An application or base selection undergoing its relevant trial checks.
Good selection	A confirmed application recorded for activation and recovery.
Liveness	Evidence that services are running and making progress; application correctness needs its own checks.
Release	Retained application packages and metadata that can be reviewed and, when compatible, redeployed.

See Architecture for the system overview.