title: Is jedis synchronous or async? What consistency guarantee does redis provide?
body: <p>1)Is jedis calls synchronous of async? When I make two consecutive writes through jedis, can I be sure that they will hit redis with the same order when I make them? </p>
  
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  <p>2)What consistency guarantee does redis provid? When I set some value through jedis, is it guaranteed that every subsequent read will see that write? I know in eventually consistency systems you don't have such guarantee. 
  Is it sequential consistency like zookeeper? I read the document. It just said that it's not strong consistency, which means linearizability I assume?</p>