Re: Data model design question

2010-11-20 Thread Peter Schuller
>  Our team decided to use Cassandra as storage solution to a dataset. > I am very new to the NoSQL world and Cassandra so I am hoping to get > some help from the community: The dataset is pretty simple, we have > for each key a number of columns with values. Each day we compute a > new version of

Re: Data model design question

2010-11-19 Thread Alex Wu
The former. On 11/19/10 7:31 AM, Chen Xinli wrote: > 查询是完全基于当天计算的数据吗 还是基于当天和历史数据的合并? > > Nanheng Wu 编写: > > > Hi, > > Our team decided to use Cassandra as storage solution to a dataset. > I am very new to the NoSQL world and Cassandra so I am hoping to get > some help from the community: The data

Re: Data model design question

2010-11-19 Thread Chen Xinli
查询是完全基于当天计算的数据吗 还是基于当天和历史数据的合并? Nanheng Wu 编写: Hi, Our team decided to use Cassandra as storage solution to a dataset. I am very new to the NoSQL world and Cassandra so I am hoping to get some help from the community: The dataset is pretty simple, we have for each key a number of columns with

Re: Data model design question

2010-11-18 Thread André Fiedler
There´s a simple comparison that helped me a lot taking my first steps with cassandra: keyspace = database CF = table ;o) And this one: http://arin.me/blog/wtf-is-a-supercolumn-cassandra-data-model Btw, love the new secondary indexes in cassandra 0.7, this saves a lot of time and work! But don

Data model design question

2010-11-18 Thread Nanheng Wu
Hi, Our team decided to use Cassandra as storage solution to a dataset. I am very new to the NoSQL world and Cassandra so I am hoping to get some help from the community: The dataset is pretty simple, we have for each key a number of columns with values. Each day we compute a new version of this