Changing the size of the RAM cache

Content Gateway provides a dedicated RAM cache for fast retrieval of popular small objects. The default RAM cache size is calculated based on the number and size of the cache partitions you have configured. You can increase the RAM cache size for better cache hit performance.


	Warning If you increase the size of the RAM cache and observe a decrease in Content Gateway performance (such as increased latencies), the operating system might require more memory for network resources. Return the RAM cache size to its previous value.


	Note If you have partitioned your cache according to protocol or hosts, the size of the RAM cache for each partition is proportional to the size of that partition.

In the Content Gateway manager, go to the Configure > Subsystems > Cache > General tab.

In the Ram Cache Size field, enter the amount of space (in bytes) you want to allocate to the RAM cache. Although the user interface will accept larger values, do not exceed 512 MB.

The default size is 104857600 (100 MB).


	Note A value of "-1" directs Content Gateway to automatically size the RAM cache to be approximately 1 MB per 1 GB of disk cache.

Click Apply.

Go to the Configure > My Proxy > Basic > General tab and click Restart.