By default, ResultSets are completely retrieved and stored in memory. In most cases this is the most efficient way to operate, and due to the design of the MySQL network protocol is easier to implement. If you are working with ResultSets that have a large number of rows or large values, and cannot...【阅读全文】
昨晚同事急急忙忙过来说生产环境一个实例(slave)root用户进不去了,询问得知这一切都源于flush privilegesReloads the privileges from the grant tables in the mysql database. On Unix, this also occurs if the server receives aSIGHUP signal.The server caches information in memory as...【阅读全文】