What is the maximum number of connections for a SQLite3 database?

Question

What is the maximum number of connections for a SQLite3 database?

Why can\'t I use it for very big websites, for example with 3 million users?

Answer 1

Under different system, this value may be different, the python test code:

import sqlite3
import sys

# connect to multiple databases
def multi_connect(conn_num):
    dbs = []
    for i in range(0, conn_num):
        try:
            con = sqlite3.connect(str(i) + '.db')
        except Exception as e:
            print('connect to %d.db failed' % i)
            sys.exit(-1)


# multiple connections to single database
def multi_connect2(conn_num):
    db_name = 'x.db'
    conns = []
    for i in range(0, conn_num):
        try:
            conn = sqlite3.connect(db_name)
        except Exception as e:
            print('connect failed at %d' % i)
            sys.exit(-1)

Under ubuntu, the failed count is 1021, you can test it under different OS.