Difference between analysis port and analysis fifo

UVM
1

hi all,
what is the difference between analysis port and analysis fifo and what is the rule of thumb to use one over another.

2

In reply to pawan:

The ‘port’ is a TLM construct providing a publisher/subscriber mechanism. One publisher - many subscribers and the port is in the publisher.
The ‘analysis fifo’ is also a TLM construct having exports and has the ability to store data with the behavior first-in, first-out (FIFO).