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Backend Engineering
Everything behind the scenes of modern applications—APIs, databases, authentication, performance optimization, queues, and the engineering decisions required to build scalable backend systems.
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Showing 8 of 8 articles
Backend Engineering · 8 min read
3 weeks ago
Cut Delivery Costs With Route Optimization
Drivers often follow habit, not the shortest path, and every extra mile costs fuel, time, and money. This article explains how route optimization plans smarter delivery routes, with step by step code that cuts distance and keeps deliveries on time.
fleet efficiencyor-toolsroute optimization+5 more
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Backend Engineering · 10 min read
1 months ago
Prevent Duplicate Payments: A Developer's Guide
Duplicate charges are one of the most damaging bugs in any checkout, and the code usually looks correct. This guide explains why duplicate payments happen and shows you, step by step with code, how to prevent duplicate payments on any stack.
idempotencyprevent duplicate paymentswebhooks+2 more
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Backend Engineering · 17 min read
4 months ago
How a Hidden N+1 Query Slowed API by 6x and the Exact Steps I Used to Fix It
The API wasn’t crashing. Nothing looked broken. But production response times quietly became six times slower. This is a real-world breakdown of how a hidden N+1 query slipped through reviews, how I proved it in Laravel, and the exact steps that fixed it permanently.
database optimizationlaravelorm optimization+3 more
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Backend Engineering · 9 min read
4 months ago
How I Built an AI-Assisted Log Analysis System to Catch Production Issues Before Users Did
Logs were there. Alerts were there. Incidents still slipped through. This guide explains how I combined traditional logging with AI-driven pattern analysis to proactively detect production issues and reduce firefighting.
ai observabilitybackend performancesystem design+2 more
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Backend Engineering · 7 min read
6 months ago
Why OFFSET Pagination Broke Our API at Scale (And How Cursor Pagination Fixed It)
OFFSET pagination broke our API at scale, causing slow queries and latency spikes. Learn how cursor pagination fixed performance without breaking clients.
system performancedatabase indexingapi performance+2 more
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Backend Engineering · 15 min read
6 months ago
Our Cache Made the App Slower. The Redis Cache Mistake I’ll Never Repeat
We added caching to speed things up. Latency dropped, then quietly got worse. This is a real production bug breakdown of how a Redis cache invalidation mistake slowed critical pages and how I fixed it without rewriting the backend.
backend scalabilityperformance optimizationredis mistake+3 more
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Backend Engineering · 14 min read
6 months ago
How I Eliminated Memory Leaks in a High-Traffic Node.js API That Everyone Thought Was “Stateless”
The API didn’t crash immediately. It slowed down gradually, then fell over under load. The problem wasn’t traffic. It was invisible memory retention hiding inside “clean” Node.js code.
high traffic apisjavascriptbackend performance+2 more
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Backend Engineering · 8 min read
7 months ago
Fast in Dev, Slow API in Production: Fixing Your API
Your API feels instant on your laptop, then crawls the moment real users arrive. This beginner friendly tutorial explains why a fast API becomes a slow API in production, and walks you step by step through the fixes in PHP, Postgres, and the frontend.
backend scalabilitybackend architecturescalable systems+9 more
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