Is it possible to build the entire social networking application on cassandra? Sure, it takes longer to set up, but it scales much better. Correct?
请列出应当使用Casses的情况。
Cassandra正在Digg、Facebook、Twitter、Reddit、Rackspace、云克、Cisco等地使用,因此对你的第一个问题的答复是肯定的。
清单的简短版本描述了应当使用Casses的情况。
You need the possibility to add new nodes to yout cluster, with no downtime.
You need a richer data model (column oriented) than simple key/value
You need the possibility to have both synchronous and asynchronous replication for each update.
是的,Casses公司在Digg、Facebook、Twitter、Redit、Rackspace、Wukick、Cisco等地非常使用并显示其业绩,并显示其真正可扩展的无机数据库,其代码基数和记忆消耗量,因此,它将真正为247-365个大型网络项目作出选择,供你参考。
http://www.stax.com/dev/blog/why-does-scalability-matter-and-how-doessandra-pan
http://www.julianbrowne.com
诸如SQ服务器或MySQL等关系数据库将使你保持一致性,牺牲提供或分治容忍。 卡桑德拉等分布式数据库将牺牲一致性,使你既能提供,又能接受分治。
简言之,如果你不需要立即一致性,则使用Casses,并用。
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