Web1 day ago · Modern applications require the capability to retrieve modified data from a database in real time to operate effectively. Usually, developers need to create a customized tracking mechanism in their applications, utilizing triggers, timestamp columns, and supplementary tables, to identify changes i... WebUse with testWhileIdle timeBetweenEvictionRunsMillis: 2000 # The following is the supplementary connection pool, all of the above is applied to the data source type: com.alibaba.druid.pool.DruidDataSource # Sql check validationQuery: SELECT 1 FROM DUAL # Get the number of retries set upon connection, no retries -1 …
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Web拿连接重试(notFullTimeoutRetryCount) 该方法的入参就是maxWait,拿主要逻辑在getConnectionInternal中,这里有一个非常重要的参数:notFullTimeoutRetryCount,当 … WebThe following examples show how to use com.alibaba.druid.pool.DruidDataSource#setMaxOpenPreparedStatements() .You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. dewalt dcs570n cordless xr
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WebnotFullTimeoutRetryCnt++; //重试次数+1 if(LOG.isWarnEnabled()) { LOG.warn("get connection timeout retry : "+ notFullTimeoutRetryCnt); continue; throwex; //超过重试次数或者池子已满仍然获取失败,则直接抛出异常 if(testOnBorrow) { //testOnBorrow开启时,每次都进行检测连接可用性 booleanvalidate = … Web更多详细内容,参考DruidDataSource配置属性列表. 3 原理. DruidDataSource的工作机制如下图所示: 主要流程如下: 业务线程获取Connection的时候,会判断连接池中是否有可用的Connection;有的话则从池子中取,没有的话则会唤醒CreateConnectionThread。 WebJul 5, 2024 · public DruidPooledConnection getConnectionDirect(long maxWaitMillis) throws SQLException { int notFullTimeoutRetryCnt = 0; for (;;) { // handle notFullTimeoutRetry DruidPooledConnection poolableConnection; try { poolableConnection = getConnectionInternal(maxWaitMillis); } catch (GetConnectionTimeoutException ex) { if … dewalt dcs571b atomic cordless circular saw