Pickle is a binary format for serializing and de-serializing Python objects.
Learn more about Pickle format in Graphite.
ATSD provides support for the Pickle format used by when Carbon daemons.
[(metric-1, (timestamp-1, value-1)), (metric-1, (timestamp-2, value-2)), ...]
The TCP port used by ATSD to receive data sent in Pickle protocol from carbon-relays is configured in
server.properties file. The default TCP port is 8084.
The maximum message length is 64 kilobytes.