How do I store and manage multiple access tokens in Catalyst connectors?

You can store the access token for multiple users in a cache segment by specifying a unique key name for each user. If the value is present in the cache, it will return the same access token value for all subsequent calls, till it expires. After it expires, Connectors will automatically get a new access token and store it in the cache. The Lead Manager App tutorial (Java) implements the logic of handling the access tokens of multiple users via Catalyst Connectors.