Update README.md

README.md

@@ -265,6 +265,10 @@ HikariConfig config = new HikariConfig();
 config.setJdbcUrl("jdbc:mysql://localhost:3306/simpsons");
 config.setUsername("bart");
 config.setPassword("51mp50n");
+config.addDataSourceProperty("cachePrepStmts", "true");
+config.addDataSourceProperty("prepStmtCacheSize", "250");
+config.addDataSourceProperty("prepStmtCacheSqlLimit", "2048");
+config.addDataSourceProperty("useServerPrepStmts", "true");
 
 HikariDataSource ds = new HikariDataSource(config);
 ```