When should MID Server clusters not be used?

MID Server clusters are designed to enable high availability and load balancing for various communication types. However, in the context of LDAP connections, using a MID Server cluster may not be ideal. LDAP relies heavily on maintaining a stable connection to the directory server, which can be disrupted when requests are load-balanced across different MID Servers. This connection state is critical in ensuring timely and consistent authentication or directory queries.

When an LDAP query is initiated, it typically depends on a consistent session per client, which could become problematic if requests are routed inconsistently across multiple MID Servers in a cluster. Consequently, it's best practice to limit LDAP connections to a single dedicated MID Server to ensure reliability and performance.

In contrast, standard HTTP requests, Web Service calls, and REST API integrations can generally benefit from the load balancing and failover capabilities afforded by MID Server clusters, making them suitable for these types of operations.