SequenceLeaseSize is the number of indexes leased at a time.

FifoRange is a query for tasks within an index range.

PebbleClient manages a connection to a pebble file store.

ScheduledRange is a query for tasks within a time range.

SettingStore manages persistent storage for queue settings.

SyncedSettings are queue settings that are synchronized to disk.

TaskIterator iterates over a range of tasks in the database.

TaskStore manages persistent storage for tasks.