What do you mean by informatica MDM Server Cache?

The ServerCache contains almost everything defined in the REPOS table, plus other items to improve performance, such as SearchTokens for storing pagination state for the Search API. Commonly used metadata can be accessed from the cache instead of being retrieved from the database. It is initialized on boot and replicated to all nodes.

public static enum CacheType {DATA_OBJECTS, REPOS_OBJECTS, ALWAYS_ENABLE, DISABLE_WHEN_LOCK, ONE_MINUTE,

CMX_INTERNAL, SEARCH_TOKENS, MDM_SESSION_MANAGEMENT }

DISABLE_WHEN_LOCK = regular objects that must be locked when modified in the Hub Console

ALWAYS_ENABLED = always retrievable low-level objects. B. Version string and user information

ONE_MINUTE = audit-related metadata

CMX_INTERNAL = Active state mapping and class loader URL.

SEARCH_TOKENS = search token for maintaining pagination status for search* related SIF APIs

MDM_SESSION_MANAGEMENT = security credentials and informatica MDM user sessions