import sqlite3


def connect(dburi="cache.db"):
    """
    Get database connection.

    dburi: uri-style sqlite database filename; accepts certain ?= parameters.
    """
    conn = sqlite3.connect(dburi, uri=True)
    conn.row_factory = sqlite3.Row
    conn.execute("PRAGMA journal_mode = WAL")
    conn.execute("PRAGMA synchronous = 1")  # less fsync, good for WAL mode
    conn.execute("PRAGMA foreign_keys = ON")
    return conn