Kafka interview questions that separate users from operators
9 min read A walkthrough of the Kafka questions interviewers actually ask, covering partitions, consumer groups, rebalancing, and delivery guarantees. Read article
System Design
System Design
Counting a billion ad clicks a day without double-counting
8 min read How to design an ad click aggregator that stays fresh for advertiser dashboards and exact for billing, covering dedup, hot keys, and late events. Read article
System Design
Design a message queue without hand-waving the hard parts
7 min read A walkthrough of the delivery, ordering, and durability decisions a message-queue design round actually grades. Read article
Tools & Reviews
When Kafka beats RabbitMQ, and when it’s the wrong tool
7 min read A practical comparison of Kafka and RabbitMQ, what each is actually good at, and how to pick for your workload. Read article
Company Guides
What the Redpanda interview actually tests for C++ engineers
6 min read How Redpanda structures its engineering loop and what the C++, Seastar, and Raft rounds actually probe for a thread-per-core systems shop. Read article
Interview Prep
How Confluent interviews engineers, round by round
6 min read A round-by-round look at Confluent’s engineering interview, from the concurrency-heavy coding screen to the streaming system design loop and the engineering values round. Read article
System Design
How Kafka partitions and delivery guarantees show up in interviews
7 min read Kafka only orders messages within a partition, and the delivery guarantee you actually get depends on a handful of producer and consumer settings interviewers expect you to name. Read article
System Design
Design an Ad Click Aggregation System
5 min read Design an ad click aggregation system — the infrastructure that counts how many times each ad was clicked, detects fraud, Read article
