whitehead1415 / deadman-switch

A deadman switch as a service. Ensures "tasks" are completed before a given timestamp.

Deadman Switch

A deadman switch as a service.

Definitions

Task

A task represents some unit of work that must be completed before a specific deadline. If the task is not completed before the deadline, the task expires; causing expiration records to be written to a C* keyspace.

Aggregate

A high level grouping of tasks. Typically, an aggregate should contain no more than 1,000 tasks.

Entity

A secondary grouping of tasks within an aggregate. Typically, an aggregate should contain one or more entity groupings.

Key

A human readable identifier for a single task. The key must be unique within an entity grouping.

Tag

A series of custom task identifiers. These can be used to arbitrarily query expired tasks within a time window (day, week, or month). Tags must be lower case and contain no spaces or special characters.

References

• Akka
• Cassandra
• Eventuate
• Protocol Buffers
• Quill
• ScalaPB