Long-form engineering posts. On-site articles open here; others link to Medium.
All posts · 5 posts
A user had access to 1 lakh devices across MongoDB, ClickHouse, and Elasticsearch. We tried seven approaches. All broke. The full journey — dead ends, edge cases, and what production systems actually do.
How similarity search works under the hood — and why naive brute-force collapses at scale.
What happens when your index outgrows your data — and how we fixed it without downtime in production.
Fan-out on write vs fan-out on read — and why Twitter uses a hybrid at 500M users. A beginner-friendly breakdown.
A production case study — how a small config issue brought down an entire IoT device fleet and what fixed it.