# Compare local snapshot implement between IRI RC12 and 1.6.0

## Configuration

boolean LOCAL_SNAPSHOTS_ENABLED = true;
boolean LOCAL_SNAPSHOTS_PRUNING_ENABLED = true;

- int LOCAL_SNAPSHOTS_PRUNING_DELAY = 50000;
- int LOCAL_SNAPSHOTS_PRUNING_DELAY_MIN = 40000;
+ int LOCAL_SNAPSHOTS_PRUNING_DELAY = 40000;
+ int LOCAL_SNAPSHOTS_PRUNING_DELAY_MIN = 10000;
int LOCAL_SNAPSHOTS_INTERVAL_SYNCED = 10;
int LOCAL_SNAPSHOTS_INTERVAL_UNSYNCED = 1000;
int LOCAL_SNAPSHOTS_DEPTH = 100;

## monitorThread

private void monitorThread(LatestMilestoneTracker latestMilestoneTracker) {
    while (!Thread.currentThread().isInterrupted()) {
        int localSnapshotInterval = latestMilestoneTracker.isInitialScanComplete() &&
                snapshotProvider.getLatestSnapshot().getIndex() == latestMilestoneTracker.getLatestMilestoneIndex()
                ? config.getLocalSnapshotsIntervalSynced()
                : config.getLocalSnapshotsIntervalUnsynced();

        int latestSnapshotIndex = snapshotProvider.getLatestSnapshot().getIndex();
        int initialSnapshotIndex = snapshotProvider.getInitialSnapshot().getIndex();

        if (latestSnapshotIndex - initialSnapshotIndex > config.getLocalSnapshotsDepth() + localSnapshotInterval) {
            try {
                snapshotService.takeLocalSnapshot(latestMilestoneTracker, transactionPruner);
            } catch (SnapshotException e) {
                log.error("error while taking local snapshot", e);
            }
        }

        ThreadUtils.sleep(LOCAL_SNAPSHOT_RESCAN_INTERVAL);
    }
}