# Use connection pooling. 使用连接池 connection pooling
# Choose appropriate isolation levels. 选择合适的隔离级别
# Use Statement pooling. 使用statement pooling
# Statements versus Prepared Statements: When to Use What? 合适的选用Statement 或者 PreparedStatement
# Tune the SQL to minimize the data returned (e.g. not ‘SELECT *’). 进行SQL调优来减少返回的数据集 比如不使用select *
# Avoid the Usage of metadata Methods (e.g DatabasemetaData.getColumns() whenever Possible. They are expensive. 尽可能的避免使用metadata方法（比如DatabasemetaData.getColumns()）
# Try to combine queries and batch updates. 合并查询和进行批量更新
# Use stored procedures.使用存储过程
# Cache data to avoid repeated queries.对数据进行缓存来避免重复查询
# Close resources (Connections, Statements, ResultSets) when finished with.操作结束时关闭资源(连接，statement, ResultSet等等)
