spring-boot/me.ahoo.wow.spring.boot/SnapshotProperties

SnapshotProperties

Where the snapshots are, and how the snapshot maintenance runs. Snapshots may be written to several stores; a store added to them is backfilled from the log: switch the primary to it once it caught up, then drop the old one.

Constructors

SnapshotProperties

constructor()

Properties

maintenanceInterval

var maintenanceInterval: Duration

How often the snapshot maintenance runs: state revision claims, in-place rebuilds and backfill checks.

primary

var primary: String?

The one of the stores the write side and the state reads read, and the snapshot queries unless an aggregate's wow.aggregates.[<context>.<aggregate>].query.snapshot.store names another; the first when not set.

rebuild

var rebuild: SnapshotRebuildProperties

How an in-place rebuild rewrites the snapshots.

stores

var stores: MutableList<String>

The stores of wow.stores every aggregate's snapshots are written to, unless its wow.aggregates.[<context>.<aggregate>].snapshot.stores names others; wow.log.store alone when empty. The first one's built-in subscription is snapshot, each other one's snapshot:<store>.

writeBatch

var writeBatch: Int

How many snapshots of a partition the snapshot subscriptions write together at most.

Functions

options

fun options(): SnapshotOptions

The node's snapshot maintenance and write options.