amount, @RequestParam Integer price) { try { playerService.buyGoods(sellID, buyID, amount, price); } catch (RuntimeException e) { return false; } return true; } } PlayerController uses annotations as resultObject = fn.apply(playerMapperEx); session.commit(); System.out.println("APP: COMMIT;"); } catch (Exception e) { if (e instanceof NotEnoughException) { System.out.printf("APP: ROLLBACK BY LOGIC; commit(); System.out.println("APP: COMMIT;"); } catch (JDBCException e) { System.out.println("APP: ROLLBACK BY JDBC ERROR;"); txn.rollback(); } catch (NotEnoughException e) { System.out.printf("APP:

@RequestParam Integer price) { try { playerService.buyGoods(sellID, buyID, amount, price); } catch (RuntimeException e) { return false; } return true; } } PlayerController 中使用了尽可能多的注解方式来作为示例 resultObject = fn.apply(playerMapperEx); session.commit(); System.out.println("APP: COMMIT;"); } catch (Exception e) { if (e instanceof NotEnoughException) { System.out.printf("APP: ROLLBACK BY LOGIC; commit(); System.out.println("APP: COMMIT;"); } catch (JDBCException e) { System.out.println("APP: ROLLBACK BY JDBC ERROR;"); txn.rollback(); } catch (NotEnoughException e) { System.out.printf("APP:

await sequelize.authenticate(); logger.info('Connection has been established successfully.'); } catch (error) { logger.error('Unable to connect to the database:'); logger.error(error); throw error; setInt(2, 230); pstmt.setInt(3, 2); pstmt.addBatch(); pstmt.executeBatch(); connection.commit(); } catch (SQLException e) { e.printStackTrace(); } Due to the default MySQL JDBC Driver settings, you need WHERE `id` = ?"); pstmt.setString(1, "Helen Haruki"); pstmt.setInt(2, 1); pstmt.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } 4.6.2.3 Use INSERT ON DUPLICATE KEY UPDATE If you need

await sequelize.authenticate(); logger.info('Connection has been established successfully.'); } catch (error) { logger.error('Unable to connect to the database:'); logger.error(error); throw error; 230); pstmt.setInt(3, 2); pstmt.addBatch(); pstmt.executeBatch(); 362 connection.commit(); } catch (SQLException e) { e.printStackTrace(); } Due to the default MySQL JDBC Driver settings, you need WHERE `id` = ?"); pstmt.setString(1, "Helen Haruki"); pstmt.setInt(2, 1); pstmt.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } 4.6.2.3 Use INSERT ON DUPLICATE KEY UPDATE If you need

await sequelize.authenticate(); logger.info('Connection has been established successfully.'); } catch (error) { logger.error('Unable to connect to the database:'); logger.error(error); throw error; setInt(2, 230); pstmt.setInt(3, 2); pstmt.addBatch(); pstmt.executeBatch(); connection.commit(); } catch (SQLException e) { e.printStackTrace(); } Due to the default MySQL JDBC Driver settings, you need WHERE `id` = ?"); pstmt.setString(1, "Helen Haruki"); pstmt.setInt(2, 1); pstmt.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } 4.6.2.3 Use INSERT ON DUPLICATE KEY UPDATE If you need

await sequelize.authenticate(); logger.info('Connection has been established successfully.'); } catch (error) { logger.error('Unable to connect to the database:'); logger.error(error); throw error; setInt(2, 230); pstmt.setInt(3, 2); pstmt.addBatch(); pstmt.executeBatch(); connection.commit(); } catch (SQLException e) { e.printStackTrace(); } Due to the default MySQL JDBC Driver settings, you need WHERE `id` = ?"); pstmt.setString(1, "Helen Haruki"); pstmt.setInt(2, 1); pstmt.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } 4.6.2.3 Use INSERT ON DUPLICATE KEY UPDATE If you need

await sequelize.authenticate(); logger.info('Connection has been established successfully.'); } catch (error) { logger.error('Unable to connect to the database:'); logger.error(error); throw error; setInt(2, 230); pstmt.setInt(3, 2); pstmt.addBatch(); pstmt.executeBatch(); connection.commit(); } catch (SQLException e) { e.printStackTrace(); } Due to the default MySQL JDBC Driver settings, you need WHERE `id` = ?"); pstmt.setString(1, "Helen Haruki"); pstmt.setInt(2, 1); pstmt.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } 4.6.2.3 Use INSERT ON DUPLICATE KEY UPDATE If you need

introduction about GC ● What is STW(stop the world) exactly? ● What happen when collector can not catch up allocation rate? ● How the garbage recycle interrupt the user program? ○ STW takes too long ○ 25%

await sequelize.authenticate(); logger.info('Connection has been established successfully.'); } catch (error) { logger.error('Unable to connect to the database:'); logger.error(error); throw error; setInt(2, 230); pstmt.setInt(3, 2); pstmt.addBatch(); pstmt.executeBatch(); connection.commit(); } catch (SQLException e) { e.printStackTrace(); } Due to the default MySQL JDBC Driver settings, you need WHERE `id` = ?"); pstmt.setString(1, "Helen Haruki"); pstmt.setInt(2, 1); pstmt.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } 4.6.2.3 Use INSERT ON DUPLICATE KEY UPDATE If you need

await sequelize.authenticate(); logger.info('Connection has been established successfully.'); } catch (error) { logger.error('Unable to connect to the database:'); logger.error(error); throw error; 230); pstmt.setInt(3, 2); pstmt.addBatch(); pstmt.executeBatch(); 348 connection.commit(); } catch (SQLException e) { e.printStackTrace(); } Due to the default MySQL JDBC Driver settings, you need WHERE `id` = ?"); pstmt.setString(1, "Helen Haruki"); pstmt.setInt(2, 1); pstmt.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } 4.6.2.3 Use INSERT ON DUPLICATE KEY UPDATE If you need