uniq -c requires incoming data to be sorted first, this can be a slow process.

count will take any line delimited input from a file, or stdin, and count unique lines.

go get github.com/djhworld/count

count will store an entry for each unique item it finds in a map. If every line of your input is unique, memory usage will be the size of the input plus the overhead for storing a key in the map.

$ echo "hello\ngoodbye\nhello" | count
hello	2
goodbye	1

$ cat netflix-views.tsv | awk '{ print $1 }' | count
arrested development	1838
stranger things	2039
house of cards	3985

$ count items.txt
item1	395
item2	829