Flask SQLAlchemy DB connections with MYSQL

Question

I am using falsk SQLAlchemy with MYSQL with all default configuration(pool size and timeout)

I don't understand why do I get out of DB connections from the MYSQL DB? My server is not that heavy loaded.

Can someone please explain how the flask sql alchemy get and release DB connections?

If I have a pool thread of 20 on my apache mod_wsgi server that means by theory that i can have 20 db connection opens all the time and that's it no?

How flask sql alchemy handle close and restore those connections. Thanks

Answer 1

try this code

import sqlalchemy

dbhost = 'localhost' #host name
dbuser = 'root' #mysql username
dbpass = 'admin' #mysql password
dbname = 'mytable' #database name

engine = sqlalchemy.create_engine('mysql://'+dbuser+':'+dbpass+'@'+dbhost ) # connect to server

DB_URI = 'mysql://' + dbuser + ':' + dbpass + '@' + dbhost + '/' +dbname
app = Flask(__name__)

app.config['SQLALCHEMY_DATABASE_URI']=DB_URI

db = SQLAlchemy(app)