📰 Dev.to · Joud Awad

Your read model and write model being the same is a common issue in system design, and CQRS...

Your API just shipped a breaking change. /users now returns fullName instead of first_name +...

You're building a B2B SaaS product. 50 enterprise customers. Each one wants their data isolated. Some...

Your team just shipped "offline mode" for your field-service app. Technicians work in basements,...

Two users edit the same document at 9:03 AM. No locking. No coordination. Just two clients writing to...

This article was written with the assistance of AI tooling for structure and syntax. The concepts,...

Your order service takes 200 writes/sec at peak. You audit 6 months of data. Something's off — two...

You're building a file upload service. 10TB of user files today. 100TB in 12 months. Your team is...

Your order processing service runs on SQS. Normal load: 200 orders/min. Consumers keep up...

Your API returns 10 million orders. The frontend asks for "page 5." Offset 40, limit 10. Simple...

Your feed service was reading at 20ms. Then a celebrity with 2M followers posted. Now you're at 4...

Your payment service just charged a customer. It writes to the DB. Now it needs to tell the...

You're shipping an AI chat product. The LLM streams ~40 tokens/sec per user. 50,000 concurrent users...

Your Kafka consumer is processing 800 events/sec. The producer just hit 5,000 events/sec and it’s...

Your checkout service calls a 3rd-party fraud-check API on every order. That API just started timing...

our mobile app talks to 3 backend services directly. A 4th one ships next sprint. The mobile team is...