List data type
The List data type is an insertion ordered sequence of strings. It is implemented as a doubly linked list which means that you have high performance push and pop operations to the beginning and end of the list.
You add new elements to the beginning of a list with LPUSH, or list push. And you can read and remove an element from the beginning of a list with LPOP.
There are equivalent commands for the right side, or end of a list, via RPUSH and RPOP.
The two most widely used list range commands are LRANGE, which allows you to get a subset of the list elements, and LTRIM which allows you to limit the size of the list. LTRIM is useful when you require a fixed list size, such as the 10 most recent blog posts.
The fact that a list is insertion ordered means that it is ideal for tracking lists of recent items, such as recent blog posts or recent signups in a lead generation form.
Lists also work exceptionally well for social media streams and message queues.
