What does the prefix 'mongodb+srv://' in a connection string indicate?

The presence of the prefix 'mongodb+srv://' in a connection string indicates that the connection string is utilizing the DNS Seedlist Connection Format, which is a standard way of connecting to a MongoDB cluster. This format allows the client to perform a DNS lookup to obtain the list of MongoDB servers in the cluster, facilitating simplified management and providing the capability to easily connect to a MongoDB deployment that may include multiple servers. Each server's address is automatically retrieved, helping to manage situations where servers may be added or removed as part of the cluster.

This option reflects the ability of modern connection strings to adapt to changes in the cluster and enhances usability for developers by abstracting the complexity of handling individual server addresses. Other prefixes, like 'mongodb://' or variations, do not imply this DNS-based functionality, which is specific to the 'mongodb+srv://' prefix.