backend – Page 3 – ITFROMZERO

Is MySQL Choking Under Heavy Write Loads? Optimization Secrets for Write-Heavy Systems

By admin August 8, 2026

Is your MySQL system slowing down during heavy write operations? Discover how to optimize Redo Log, Doublewrite Buffer, and Batch Insert techniques to boost write speeds by 10x.

Development

Idempotency in REST APIs: Preventing “Double Charges” with Node.js and Redis

By admin August 7, 2026

Learn how to prevent duplicate transactions in REST APIs using Node.js and Redis. A practical guide to protecting data and avoiding 'double charge' errors during retries.

Development

Building Your Own Web Push Notification System with Node.js: ‘Breaking Up’ with Firebase for a Lighter App

By admin August 6, 2026

Stop relying on Firebase! Discover how to build a lightweight Web Push Notification system for Node.js using the web-push library and VAPID protocol.

Python

Scrapy Python: Building a Million-Record Crawler Without Getting IP Banned

By admin August 5, 2026

Building a million-record crawler with Scrapy Python. A detailed guide from project structure and pipeline optimization to proxy rotation techniques to avoid IP bans.

Python

Django Ninja: High-Speed REST API Development Made Easy

By admin August 4, 2026

Find DRF too bulky? Discover how Django Ninja combines with Pydantic to create high-speed APIs, clean code, and excellent Type Hint support.

MySQL

MySQL Hash Join: A Lifesaver for Queries Lacking Indexes on MySQL 8.0.18+

By admin July 30, 2026

What is MySQL Hash Join? Learn how it works, how to configure join_buffer_size, and practical tips to significantly speed up JOIN queries lacking indexes.

Development

Contract Testing with Pact: An API ‘Break-Proof’ Solution for Node.js Microservices

By admin July 26, 2026

Contract Testing eliminates the fear of API breaking changes in Node.js Microservices. Learn how to use Pact to replace bulky integration tests and accelerate releases.

Development

Goodbye Passwords: Implementing Passkeys (WebAuthn) with Node.js and SimpleWebAuthn

By admin July 24, 2026

Learn how to implement Passkeys (WebAuthn) with Node.js to replace traditional passwords. This detailed guide helps enhance security and improve user experience.

Development

Secure Webhooks in Node.js: HMAC-SHA256 Verification and Proper Retry Handling

By admin July 18, 2026

An unauthenticated webhook is an easy target for forged requests — this article covers how to protect a Node.js endpoint with HMAC-SHA256, handle idempotency to prevent duplicate processing on retries, and implement exponential backoff when calling downstream services. Includes complete working code and curl commands to test immediately.

Development

Implementing ABAC with Open Policy Agent (OPA) and Node.js for Complex Microservices Systems

By admin July 17, 2026

When RBAC is no longer sufficient for complex authorization logic in Microservices, Open Policy Agent (OPA) and the ABAC model offer a practical solution. This post shares production experience with Node.js, Rego policies, and how to integrate OPA into Express middleware.