Installation and network configuration
If the Interact server is required to maintain session data across multiple Interact API calls and you are using the Ehcache cache manager to improve performance, use sticky load balancing and local session management instead of distributed session management.
Using Ehcache, distributed mode incurs the cost of communication between the Interact runtime servers to keep the sessions consistent. Local session management can avoid that cost.
InIBM® Marketing Platform configuration settings for the Interact runtime server, set the Interact > cacheManagement > EHCache > Parameter Data > cacheType property to local.