[GitHub] [incubator-shardingsphere] codingIsCrazy commented on issue #3083: After the service restarts, the request is time-consuming in a short time

[GitBox <gi...@apache.org>]

codingIsCrazy commented on issue #3083: After the service restarts, the request is time-consuming in a short time
URL: https://github.com/apache/incubator-shardingsphere/issues/3083#issuecomment-598528769
 
 
   > @terrymanu @zcjhwl It's going to be faster
   > 
   > @component
   > public class PreHeating implements InitializingBean {
   > @override
   > public void afterPropertiesSet() throws Exception {
   > Collection databaseTypes = SQLParserFactory.getAddOnDatabaseTypes();
   > for (DatabaseType databaseType:databaseTypes){
   > if("MySQL".equals(databaseType.getName())){
   > SQLParseEngine parseEngine = SQLParseEngineFactory.getSQLParseEngine(databaseType);
   > parseEngine.parse("select 'X'",true);
   > MySQLParser mySQLParser = (MySQLParser)SQLParserFactory.newInstance(databaseType,"select 'X'");
   > mySQLParser.execute();
   > }
   > }
   > }
   
   this "getAddOnDatabaseTypes" is not exist

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