Leonardy的博客

quartz定时任务创建失败 Caused by: org.quartz.ObjectAlreadyExistsException: Unable to store Job : 'DEFAULT.TASK_1', because one already exists with this identification. at org.quartz.impl.jdbcjobstore.JobStor...

NoSQL入门和概述1. Why NoSQL?2. What is NoSQL?3. NoSQL与RDBMS的区别3.1 RDBMS：3.2 NoSQL： 1. Why NoSQL? 随着中国互联网的飞速发展，互联网用户的井喷式增长及其日益增长的需求，传统的关系型数据库，无论在性能上还是扩展性都已遇到了瓶颈. 2. What is NoSQL? NoSQL(Not Only SQL), 不仅仅是数...