Using Change Logs Effectively
The change log resources (described in Change Logs) expose all the content items in a protection domain, ordered by their last date of modification.
The Content Store offers two mechanisms for optimizing the efficiency of change logs:
previouslink. This is the basic method of using an CUE change log – the method you should use if you cannot or do not need to make use of server-sent events.
Server-sent events (SSE). This is an optional technique you can use in addition to polling the
previouslink that provides much better scalability. It is the recommended method of using CUE change logs.
These mechanisms are described in the following sections.