NewDistributedLog creates a new DistributedLog instance.

NewLog creates a new log using the provided directory.

START: stream_layer_dial.

A Config is the configuration for the log.

The DistributedLog struct represents a distributed log that is used to store and retrieve data.

A Log is a sequence of segments, the log is designed to be append-only.

A Replicator here is pull-based, it copies other servers logs to the local server.

START: fsm_append.