RDRONI DASinsystemdesignacademy.hashnode.dev·3d ago · 17 min readMachine Learning System Design: The Framework That Wins InterviewsAsk most people to design a machine learning system and they start with the model. They reach for a transformer, or a gradient-boosted tree, or whatever architecture is fashionable that quarter, and t00
RDRONI DASinsystemdesignacademy.hashnode.dev·3d ago · 17 min readDesigning a Time-Series Database: Compression, Cardinality, and RetentionAsk an engineer to design a database and they reach for the tools they know: rows, a B-tree index, a mix of reads, updates, and deletes on individually addressable records. That instinct is correct fo00
RDRONI DASinsystemdesignacademy.hashnode.dev·3d ago · 17 min readDesigning DynamoDB: A Distributed Key-Value Store at Any ScaleAsk most engineers how DynamoDB scales and you get one answer. It partitions the data. That is true, and it is also the least interesting sentence you can say about it, because sharding a dataset acro00
RDRONI DASinsystemdesignacademy.hashnode.dev·3d ago · 30 min readHow RAG Actually Works in Production (The Model Is the Easy Part)Ask most people how a retrieval-augmented generation system works and you get an answer that is really about the language model. You put your documents somewhere, the model reads them, and it answers 00
RDRONI DASinsystemdesignacademy.hashnode.dev·3d ago · 4 min readHow Slack Delivers Real-Time Messages at ScaleYou send a message in a Slack channel and everyone in that channel sees it within a fraction of a second, whether they have the app open on a laptop, a phone, or both. Making that feel instant, for mi00
