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Database scaling & optimization

Indexing, connection pooling, read replicas, query tuning, and throughput-aware SQL.

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Database scaling & optimization medium

How to Mock SQLite executemany When Batch Inserting in Python

Batch insert many rows into SQLite with executemany and mock the cursor for isolated tests.

sqlite3 executemany mock
Python 
import sqlite3
from unittest.mock import Mock, patch

def insert_users(conn, users):
    """Insert multiple user records using executemany."""
    cursor = conn.cursor()
    cursor.executemany(
        "INSERT INTO users (name, age) VALUES (?, ?)",
        users
    )
    conn.commit()
    return cursor.rowcount

if _…
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