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Curated developer articles, tutorials, and guides — auto-updated hourly
Valipireddy Kowshik2d ago • 3 min read
Retries Are a Distributed Systems Bug Waiting to Happen: Designing Idempotent APIs
Why naive retries cause duplicate charges and corrupted state, and how idempotency keys, backoff wit...
#architecture#backend#api#systemdesign
1 2
Andrii B.Oct 16, 2026 • 13 min read
Event-Driven Architecture Is Not Event Sourcing
Put a Kafka topic between two services, and sooner or later someone in the design review will say "s...
#architecture#eventdriven#microservices#systemdesign
6 1
ZeeshanAli-07042d ago • 28 min read
System Design: Optimistic vs Pessimistic Locking
Optimistic vs Pessimistic Locking A practical guide to concurrent updates: version...
#architecture#backend#database#systemdesign
2 1
Gabriel AnhaiaOct 16, 2026 • 9 min read
Design GitHub Actions in 45 Minutes: Job Queue, Runners, Live Logs and the Cache
A 45-minute system design walkthrough of a CI service: capacity math, a leased job queue, ephemeral ...
#systemdesign#career#interview#devops
1 0
Sina Mohammadi4d ago • 6 min read
The Customer Who Said "Delete Me" (and the 420 Million Events That Said "No")
A system design story about GDPR, event sourcing, and a very long Tuesday. It was a normal...
#systemdesign#architecture#backend#gdpr
2 1
Gabriel Anhaia3d ago • 10 min read
Design Ticketmaster for a 3.5-Billion-Request Presale: Waiting Room, Seat Holds, Expiry
The Eras Tour presale hit 3.5B requests, 4x Ticketmaster's prior peak. Work the interview design: wa...
#systemdesign#redis#architecture#interview
0 1
Sakshi J1d ago • 2 min read
I Used both Polars and Pandas
Hello readers!! Read time - 3 min written with AI 🤖, implemented by human 💗 This blog is about a...
#python#systemdesign#software#network
9 2
Samir ElmallahOct 16, 2026 • 4 min read
When native cloud schedulers are enough, and when not
Every cloud platform ships with a scheduler, and inside one platform it is usually the right tool. F...
#architecture#cloud#infrastructure#systemdesign
0 0
tejaswipandava6d ago • 9 min read
Caching Strategies: 8 Patterns Every Engineer Should Know
The fastest way to produce a shallow system design: saying "I'll add Redis for caching" and stopping...
#techlettersbyteja#systemdesign
0 0
Daniel Camucatto5d ago • 6 min read
Derrubaram nosso login sem tocar no servidor
Numa empresa em que trabalhei, tínhamos um sistema de agendamento. Nada de exótico: clientes...
#braziliandevs#api#backend#systemdesign
0 0
Hurdad Ashouri3d ago • 5 min read
A 100K-token prompt is a denial-of-service attack you paid for
A coding agent takes 11 seconds to rename a variable. The model is fine. The GPU is fine. The p99 i...
#ai#llm#systemdesign#performance
0 0
Himanshu Joshi6d ago • 5 min read
Your AI Demo Works. Production Won't. A Free 11-Part Course on AI System Design
Every AI demo I've seen works beautifully. Five boxes on a whiteboard, one API call, an answer in...
#systemdesign#rag#agentevaluation#llmgateway
0 0
Raj Mohamed2d ago • 9 min read
AI System Design for Production
Your Chatbot Demo Works. That Doesn't Mean It's Ready for 10,000 Users. An...
#ai#llm#production#systemdesign
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Joung Park4d ago • 7 min read
Share a Kafka Topic Only When Order Matters
We merged Kafka topics because the same services consumed the messages together. It felt simpler. Tw...
#architecture#backend#devops#systemdesign
0 2
Daniel Camucatto5d ago • 10 min read
Seu LLM vai falhar e vai ser enganado: idempotência e segurança em fluxos de e-commerce
Um agente de atendimento que emite cupom em dobro por causa de um retry e quase dá 100% de desconto ...
#braziliandevs#ai#backend#systemdesign
0 0
MANGESH MANDLIK4d ago • 14 min read
YouTube System Design: Upload, Transcoding, CDN & Video Streaming
YouTube System Design: From Video Upload to Global Playback A viewer presses Play. A few...
#systemdesign#architecture#backend#scalability
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iCe Gaming4d ago • 7 min read
Keeping checkout alive when the store's internet dies
A store's internet connection is the least reliable part of its checkout. The fibre gets cut, the...
#rust#architecture#programming#systemdesign
1 0
Yuhe He6d ago • 5 min read
Freshness Watermarks Belong on Every Row, Not the README
The most common freshness design I see — in my own old code included — is a single stamp at the top:...
#architecture#data#systemdesign
0 0
tejaswipandava5d ago • 5 min read
Designing APIs for Massive Datasets (Cursor Pagination, Sparse Fields, Caching)
The scenario: Your API returns a list of 2 million products. A mobile app needs to display them. How...
#api#performance#scalability#systemdesign
0 1
Muhammad Zeeshan Sardar1d ago • 18 min read
Shopify Next Gen Events: Migrate Off Webhooks Without Losing Deliveries
TL;DR: Next Gen Events (GA 1 October 2026, API version 2026-10) lets a Shopify app subscribe to exac...
#shopify#webhooks#graphql#systemdesign
0 0
Tummala Krishna Kishore21h ago • 4 min read
The difference between a design review and a rubber stamp
I approved a pull request last month in about four minutes. Tests passed, the diff was clean, the...
#architecture#softwaredesign#systemdesign
0 0
Koray Yalçın1d ago • 9 min read
B2B portalından ERP'ye sipariş göndermek: Idempotency, outbox ve kredi limiti kontrolü üzerine geliştirici notları
Bayilerin ve kurumsal müşterilerin kendi özel fiyatlarıyla sipariş verdiği bir B2B portalı dışarıdan...
#api#architecture#backend#systemdesign
0 0
Muneeb Ahmad5d ago • 26 min read
Building a Job Portal Backend: From Database Design to Deployment
Summary This project is a multi-tenant job portal built with Node.js, TypeScript,...
#backenddevelopment#node#systemdesign#postgres
0 0
tejaswipandava3d ago • 8 min read
Designing a URL Shortener (like bit.ly)
Framework: Problem → Constraint → Decision → Alternative → Trade-off → Failure Mode This is the...
#techlettersbyteja#systemdesign#casestudy
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