app.config['FLASKY_DB_QUERY_TIMEOUT']=0.00000000001

@app.after_request
def after_request(response):#录影响性能的缓慢数据库查询for query in get_debug_queries():if query.duration >= app.config['FLASKY_DB_QUERY_TIMEOUT']:print '#####Slow query:%s \nParameters:%s \nDuration:%fs\nContext:%s\n #####'% \(query.statement, query.parameters, query.duration,query.context)return response

#coding:utf8
from flask import Flask, jsonify
import timefrom flask_sqlalchemy import SQLAlchemy, get_debug_queriesdb = SQLAlchemy()
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI']='mysql://root:password@127.0.0.1:3306/database_name?charset=utf8'
app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN']=True
app.config['SECRET_KEY']='rgc is a good boy!hehe!'
# 启用缓慢查询记录功能
# app.config['SQLALCHEMY_RECORD_QUERIES']=True
app.config['FLASKY_DB_QUERY_TIMEOUT']=0.00000000001
db.init_app(app)class User(db.Model):__tablename__ = 'user'id = db.Column('id', db.Integer, primary_key=True, autoincrement=True)email = db.Column('email', db.String(64), unique=True)  # 邮箱def __init__(self, email):self.email = emaildef to_dict(self):output_dict = {}output_dict.update(self.__dict__)if "_sa_instance_state" in output_dict:del output_dict['_sa_instance_state']return output_dict@app.teardown_request
def handle_teardown_request(ex):db.session.remove()@app.after_request
def after_request(response):#录影响性能的缓慢数据库查询for query in get_debug_queries():if query.duration >= app.config['FLASKY_DB_QUERY_TIMEOUT']:print '#####Slow query:%s \nParameters:%s \nDuration:%fs\nContext:%s\n #####'% \(query.statement, query.parameters, query.duration,query.context)return response@app.route('/users/<email>')
def line_test(email):result_id=db.session.query(User.id).filter_by(email=email).first()return jsonify({'code':200,'email':email,'id':result_id[0]})if __name__=='__main__':app.run(debug=True)

 * Detected change in '/home/rgc/baidu_eye/carrier/test/flask_test_mongo.py', reloading* Restarting with reloader
#####Slow query:SELECT user.id AS user_id
FROM user
WHERE user.email = %s LIMIT %s
Parameters:('3@qq.com', 1)
Duration:0.000331s
Context:/home/rgc/baidu_eye/carrier/test/flask_test_mongo.py:47 (line_test)#####
127.0.0.1 - - [07/Mar/2018 18:37:05] "GET /users/3@qq.com HTTP/1.1" 200 -