scheduledtimed

Scheduledtimed is a generic term used in computing to describe a daemon or service that schedules and executes tasks at predetermined times or intervals. It is conceived as a time-based job scheduler that can function as a stand-alone service or as part of a larger system management framework. A typical scheduledtimed instance monitors a schedule store, which may be a flat file, a database, or a configuration management system. Each entry defines a trigger (such as a cron-like expression, a calendar date, or a relative interval), the command to run, and optional environment settings and constraints (working directory, user identity, resource limits). When the trigger fires, scheduledtimed launches the job, capturing output and error streams as configured, and records the result in logs or a job history.

Key design considerations for scheduledtimed include accuracy and drift handling, time zone management, and support for various trigger syntaxes. Concurrency control is important to prevent simultaneous runs of the same job, and failure handling often includes retry policies, backoff strategies, and alerting hooks. Observability features such as logging, metrics, and audit trails are commonly integrated to provide visibility into scheduling behavior and execution outcomes.

In practice, scheduledtimed concepts are realized by a range of technologies and patterns, from traditional Cron implementations to modern timer units in systemd, as well as workflow engines and enterprise schedulers. The term is commonly used in documentation as a generic reference to the functionality shared by these time-based scheduling components.

See also: cron, at, systemd timer, time-based scheduling, task scheduler.