Thanks for your suggestion. Does it work if insertion through thrift client, and reading through cassandra directly like ClientOnlyExample?
2010/7/21 Santal Li <santal...@gmail.com> > I think build a ColumnValueFilter isn't a good idea, you really needs was a > self defined index, otherwise filter will cause too many scan and disk IO. > > we have meet almost same problem as yours in our own webapp: store data in > one fields, then get data by search on another fields. Our solution is > create a new KeySpace for index, them maintains the index by query > conditions at application. Suggest you read this document, for get > basic idea > http://code.google.com/intl/zh-CN/appengine/articles/index_building.html . > > if you using this solution, maybe you need consider bellow issue: > 1. multi client concurrent access > 2. index and object data maybe inconsistence during error. > > Some kind of lock service maybe help, like ZooKeeper. > > Regards > -Santal > > > > 2010/7/19 Chen Xinli <chen.d...@gmail.com> > > Hi, >> >> I want to implement goods search with cassandra; and I have some >> confusings. Can someone help me out? >> >> The case is that: >> There are about 1 million shops, every shop with about 10,000 goods, every >> goods with property like "title", "price" etc.. >> The search is like "give me 10 goods in a specific shop and the price of >> the goods should be less than 10$" >> >> For the data model, I use shop name as the key; goods id as the column >> name and "title", "price" are special encoded as column value . >> There are too many goods in one shop, filtering the data in thrift client >> is impossible for network transferring reason. >> I want to implement a special ColumnValueFilter extends QueryFilter to get >> the result in "local". >> Is this the best way? >> >> >> Insertion of goods is about 100/second for the whole cluster, so a thrift >> client for insertion is ok. >> For reads, latency and qps are important and I must provide a http service >> for user searching. >> Embedding a thrift client in such a service will involve another network >> transferring, so I want to build the service on top of cassandra directly. >> I reviewed the code of ClientOnlyExample.java. >> What makes me confusing is that: insertion through thrift client and >> reading through using cassandra directly, is data consistency promised and >> how? >> >> Any help is appreciated. Thanks! >> >> -- >> Best Regards, >> Chen Xinli >> > > -- Best Regards, Chen Xinli
