< H2 > the cause of the problem < H2 > recently wrote a scheduled task using quartz . This scheduled task is mainly to add something like points to members, and to keep a record of points increase, which is executed at 4 o clock every morning, but s...
druid may throw SqlException when creating a connection, but cannot capture ...
druid + Mybatis + spring boot. , Sql(, 20.), . druid? . 2018-12-05T22:16:01.306+0800 [ERROR] interceptor.RuntimeExceptionInterceptor < http-nio-6016-exec-2_xxx.i.RuntimeExceptionInterceptor.handleBizExceptions (52) _ c.g.x.f.i.RuntimeExceptionIntercept...
time distribution, what kind of distribution, what do you think? ...
Project applies Druid+Sharding JDBC to split a table, product_0, product_1,product_2. but only the logical table name can be seen under Druid monitoring. Product, cannot see the actual physical table name and UNKNOWN appears under the fields item. As...
the druid configuration I know is configured on a service if mysql is installed on a machine when we connect with a connection pool according to https: blog.csdn.net w059805. the size formula of the connection pool is: number of connections = ((...
enabling affects performance, but does not enable it. If an abnormal connection occurs, it may not be reclaimed in time, causing the system thread to be occupied and then hung up. For example, https: blog.csdn.net lx34832....
the project uses SpringBoot+jdbc+mybatis+druid, to use logback for log processing. There is no problem with the whole project test, but when the war package is put into tomcat to start, it will constantly prompt the relevant information of JNDI . [DEBUG...
critical: Error listenerStart 2018-5-11 15:32:08 org.apache.catalina.core.StandardContext start critical: Context [ SCM] startup failed due to previous errors 2018-5-11 15:32:09 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc serio...
druid database connection overflows, resulting in application downtime. The database uses Ali Cloud s RDS, connection to allow 8000 connections connection pool is configured as follows : <!-- --> <bean id="dataSourceMain" cl...
want to collect some online data, the online Scrapy framework is recommended, I read the official documents and online articles, but there are still a few places confused, want to sort out the learning ideas, beginners, some things are just ideas, incor...
$arr = array( a => aaa , b => bbb ); $arr = array( a => bbb , b => aaa );...
problem description word files accessed by mongodb need to be displayed in the browser, but the browser is not good at displaying office files, so the current solution is to read word, through gridfs-stream in the background and then convert it to pdf...
if the question starts on line 4 of the program, the for loop is followed by if judgment, and then name=self._nic_ovs_name_pattern.search (o) refers to the if conditional judgment returns true before the assignment operation is performed? Or is it execu...
the code is as follows: destroyed the html structure, resulting in style errors, how can I modify so that the outermost div does not occupy the html tag? ...