Code Explainers

Code explainers tagged #connection-pooling

javascript 
const { Pool } = require('pg');
 
const pool = new Pool({
  connectionString: process.env.DATABASE_URL,

Per-request Postgres connections in Express

connection-pooling middleware transactions
Intermediate 8 steps
rust 
use axum::{
    extract::{FromRequestParts, Host},
    http::{request::Parts, StatusCode},
};

Multi-tenant DB routing in Axum extractors

multi-tenancy extractors connection-pooling
Advanced 8 steps
python 
import requests
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry
 

Building a resilient requests Session

retries backoff http-client
Intermediate 7 steps