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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 Build a Connection Pool Reuse Mock in Python

Build a mock connection pool with context manager to track connection reuse, acquires, and releases in Python.

connection-pool context-manager database
Python 
import time
from contextlib import contextmanager


class Connection:
    def __init__(self, name):
        self.name = name
        self.in_use = False
        self.busy_since = None

    def fetch(self):
        return f"data from {self.name}"


class ConnectionPool:
    def __init__(self, size=3):
        self.conn…
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