我们来自RDBMS背景,我们要做的是将现有数据存储移植到cassandra,以利用分布式数据库的强大功能.我们的要求是存储关于密钥的值,可能关键是时间(计划使用纪元时间)和检索密钥范围之间的值
对于测试,我们使用cql(via cqlsh)创建了ColumnFamily并插入了Data :
CREATE COLUMNFAMILY Log( KEY int PRIMARY KEY,Val1 varchar,Val2 varchar);
INSERT INTO Log (KEY,val1, val2) VALUES (1,'673153106.00','448768737.33');
INSERT INTO Log (KEY,val1, val2) VALUES (2,'673153106.50','448768737.67');
INSERT INTO Log (KEY,val1, val2) VALUES (3,'673153107.00','448768738.00');
INSERT INTO Log (KEY,val1, val2) VALUES (4,'673153107.50','448768738.33');
INSERT INTO Log (KEY,val1, val2) VALUES (5,'673153108.00','448768738.67');
INSERT INTO Log (KEY,val1, val2) VALUES (6,'673153108.50','448768739.00');
INSERT INTO Log (KEY,val1, val2) VALUES (7,'673153109.00','448768739.33');
INSERT INTO Log (KEY,val1, val2) VALUES (8,'673153109.50','448768739.67');
INSERT INTO Log (KEY,val1, val2) VALUES (9,'673153110.00','448768740.00');
INSERT INTO Log …cassandra ×1