Twitter is a microblogging service that lets users post "tweets" of up to 140 characters. These can also be posted via its API (

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Redis drives Timeline, Twitter’s most important service. Timeline is an index of tweets indexed by an id. Chaining tweets together in a list produces the Home Timeline. The User Timeline, which consists of tweets the user has tweeted, is just another list.

Here is a quick rundown of creating a simple Twitter bot in Ruby.