Ensure to specify the Hot SKU control parameters to avoid performance degradation.
In the customer_overrides.properties file, specify the following Hot SKU control parameters.
Hot SKU Control Parameter | Description |
---|---|
yfs.yfs.hotsku.useHotSKUFeature | Control used to enable/disable the Hot SKU feature. By default, this parameter is set to N. |
yfs.yfs.hotsku.useTimeOutLocking | Control used to enable or disable the lock request timeout option in the Hot SKU feature. By default, the parameter is set to "N". |
yfs.yfs.hotsku.registerAvailabilityOnLockTimeout | If the value of this property is set to Y,
and the SKU turns hot for the first time, and if availability is not
yet registered, then availability is registered without lock. Based
on the availability picture, the normal hot SKU logic determines whether
lock is needed. Note: Ensure that the yfs.yfs.hotsku.useTimeOutLocking parameter
is enabled by setting the value to Y.
|
yfs.yfs.hotsku.useAvailabilityAcrossNodes | This property controls whether the safety level
is checked across nodes or for a single node. By default, the value
of this property is set to N.
|
yfs.yfs.hotsku.secondsToClassifyAsAbnormalTime | Threshold used to determine when a lock request is "abnormal". If a lock request exceeded this threshold, that lock request is counted as an "abnormal" lock request. Defaults to 0.5 seconds. |
yfs.yfs.hotsku.windowTimeInMinutes | Interval of one tracking window during which "abnormal" lock
requests are tracked. A subsequent window begins once the first window
ends. Default interval is 10 minutes. |
yfs.yfs.hotsku.numberOfAbnormalLocks ForSwitchToHotSKU |
Threshold used to determine when to promote an inventory item
to Hot SKU status. If the number of "abnormal" lock requests for an item exceeds this value within the tracking window, that item is promoted to Hot SKU status. see Three usage scenarios for recommended settings. |
yfs.yfs.hotsku.numRequestsInTrackingWindow ToKeepAsHotSku |
Minimum number of requests needed within the tracking window to keep the item in Hot SKU status. |
yfs.yfs.hotsku.showExtraMessagesAsInfo | Enables extra messages to be displayed at info logging level. Default value is "N". |
yfs.yfs.hotsku.itemMapPurgeLeadTime | This parameter is used when the number of Hot SKU items in the cache has reached its limit (specified by yfs.yfs.hotsku.maxItem MapSizeInMemory). When cache is full, eject Hot SKU if it has not been accessed in yfs.hotsku.itemMapPurgeLeadTime minutes. Default value is 10. |
yfs.hotsku.lockOnlyOnLowAvailability | This property determines whether locking should be avoided until availability gets low. By default, the property assumes that the availability is checked for the first time and all the items have high availability. If this property is set to Y, then, it is assumed that the availability is high and lock will be avoided. If the property is set to Y, then, the availability calculation will not lock the YFS_INVENTORY_ITEM if the INV_INVENTORY_ITEM_LOCK doesn’t exist for the demand type. |
yfs.hotsku.assumeUnavailableOnLockTimeout | This property determines whether an item should
be assumed unavailable if in case the lock cannot be acquired. This
property is applicable only when yfs.hotsku.lockOnlyOnLowAvailability
is set to Y. If the yfs.hotsku.useTimeOutLocking property and yfs.hotsku.assumeUnavailableOnLockTimeout is set to Y, it will be assumed that there is no inventory available for this item if a timeout occurs. Inventory will be assumed unavailable for this sourcing rule detail. If there are multiple sourcing rule details, then normal expansion will continue and lock will be attempted again. |
For Sterling Selling and Fulfillment Foundation Internal Use Only | |
yfs.yfs.hotsku.qtyMultiplier | Defaults to 30. Do not modify without IBM® guidance. |
yfs.yfs.hotsku.highRequestQuantityMultiplier | Defaults to 2. Do not modify without IBM guidance. |
yfs.yfs.hotsku.maxItemMapSizeInMemory | Defaults to 1000. Do not modify without IBM guidance. |