Commerce Engine Connect Memory Cache settings
The Commerce Engine (CE) Connect Memory Cache stores catalog items to allow for quicker access from the storefront. The size of Commerce catalogs and the complexity of their structure can affect memory cache behavior. You can use the CE Connect Memory Cache settings to fine-tune the configuration to meet requirements of your Commerce storefront.
The CE Connect Memory Cache settings are located in the
c:\inetpub\wwwroot\<site>\App_Config\Include\Y.Commerce.Engine folder, in the
The CE Connect Memory Cache provides the following settings (and default values):
<cacheMemoryLimitMegabytes>500</cacheMemoryLimitMegabytes>: Establishes the limit of memory to reserve for the caching of the Catalog items (mostly SellableItems). Once the limit is reached, then the standard scavenging process starts, just like any other Sitecore cache.
<cacheMemoryScaleFactor>3</cacheMemoryScaleFactor>: Due to the variety of the catalog structure, the raw value of the calculated cache memory size might not accurately reflect the real memory consumption. The
cacheMemoryScaleFactorvalue is used to multiply the raw value of each cache entry. The sum of all cache entries is then compared with the value of the
cacheMemoryLimitMegabytesin order to decide if the scavenging process starts. The value must be an integer.Note
When fine-tuning the configuration of the cache memory size, you should consider both the
cacheMemoryScaleFactorvalues. From the memory dump, the
currentSizeproperty value of the
Sitecore.Caching.Cacheobject provides the calculated memory size (multiplied by the value of the scale factor). If, when compared, the calculated memory size is larger than the actual cache memory usage (as indicated by the size of the Commerce Cache in the memory dump), you can set the
cacheMemoryLimitMegabytesslightly higher than the desired value to delay the scavenging process, as the actual memory consumption has been over-estimated.
<physicalMemoryLimitPercentage>0</physicalMemoryLimitPercentage>: Sets the percentage amount of physical memory to use for caching. This parameter is for future usage and can be ignored at the moment.
<pollingInterval>00:03:00</pollingInterval>: Sets the interval between the scavenging process for the Commerce Cache.
<cacheExpiryInSeconds>1800</cacheExpiryInSeconds>: Sets the amount of time to retain an item in the cache. An item that has been cached for longer than the value specified in the
cacheExpiryInSecondsparameter is considered staled. The scavenging process removes staled items from the cache.