<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>polote</author><text>If Khan Academy uses Youtube to serve their video and uses Fastly to serve static content, what makes it hard to scale ?&lt;p&gt;I mean being able to scale that easily is a great thing, but is there anything worth sharing with the world in their case ?</text><parent_chain></parent_chain></comment><story><title>How we successfully handled 2.5x traffic in a week</title><url>http://engineering.khanacademy.org/posts/handling-2x-traffic-in-a-week.htm</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>xhkkffbf</author><text>This is a good example of how cloud tools make this kind of scaling easy.&lt;p&gt;The trickier part can be the cost-- which this piece notes will increase roughly linearly with the number of users. If Khan Academy is free, I think this means those who are generous are going to need to keep giving to keep it that way. Let&amp;#x27;s step up, everyone.</text><parent_chain></parent_chain></comment><story><title>How we successfully handled 2.5x traffic in a week</title><url>http://engineering.khanacademy.org/posts/handling-2x-traffic-in-a-week.htm</url></story>