📰 Dev.to · Joud Awad

There is no SQL in DynamoDB. No query language, no syntax to memorize, no planner deciding how your...

DynamoDB Data modeling is one of the hardest things that appears on paper. Still, once you understand...

A document processing pipeline runs as an AWS Step Functions Standard workflow (serverless workflow...

Your DynamoDB table has plenty of write capacity. Your writes are getting throttled anyway. Nothing...

A lending platform runs its loan approval workflow as a Lambda durable function (Lambda's...

One malformed record. 61,000 duplicate loyalty credits. A retail platform streams purchase events...

A multi-tenant SaaS platform sends all background notifications — email, SMS, webhook calls — through...

Your Redis node is out of memory. You add three more nodes. Still full, and nothing got faster. You...

A SaaS platform uses EC2 Auto Scaling (automatically launches or terminates EC2 instances based on...

A checkout API runs on Lambda (serverless compute, Node.js, 1,024 MB, attached to a VPC for RDS...

A machine learning platform runs inference workloads on ECS (Elastic Container Service — managed...

340 customers were charged twice. No one touched the code. An e-commerce platform processes orders...

A fintech startup is building a real-time payment processing platform. Three teams need to react when...

A gaming platform stores player leaderboard data in DynamoDB (managed NoSQL database, distributes...

Distributed Transactions are one of the hardest problems you can face in any distrubuted systems. It...

Your service writes an order to the database, then publishes an event to Kafka. Two lines. Nobody...

I wrote down the 60 questions I wish someone had handed me years ago. For a long time I thought...

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 ML team trained a model that hits 94% accuracy in the notebook. Then you deploy it. Peak...

Your data team just opened a $4,200 BigQuery bill. For a single month. One analyst. 12 queries. The...

Your monolith is 6 years old. 500k lines of code. One deploy every 3 weeks. One bad migration takes...

Your search box returns results in 80ms. Then you add 50M more documents. Now it's 4 seconds. Your...