ObsessionDB – We rebuilt ClickHouse infrastructure to cut our costs 50%
Hey HN, I'm Marc. I run Numia, a blockchain data company serving real-time APIs at near-petabyte scale. ObsessionDB is managed ClickHouse we built for ourselves that costs roughly 50% less than other managed options. Now we're launching it as a standalone service. We had the classic split: ClickHouse for real-time analytics APIs, BigQuery for data warehouse workloads. Data replicated between both, costs adding up. Managed ClickHouse worked but was too expensive to put our warehouse workload into. Self-hosted meant replica nodes doubling storage and waiting days to copy 25TB to new replicas.…
In plain words
ObsessionDB is a managed ClickHouse service that separates storage and compute to reduce infrastructure costs by approximately 50% compared to other managed options. Built by Numia, a blockchain data company, it consolidates real-time analytics APIs and data warehouse workloads into a single system, eliminating the need to replicate data across multiple platforms. The service is designed for companies operating at large scales who want lower costs without the operational burden of self-hosting ClickHouse.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hey HN, I'm Marc. I run Numia, a blockchain data company serving real-time APIs at near-petabyte scale. ObsessionDB is managed ClickHouse we built for ourselves that costs roughly 50% less than other managed options. Now we're launching it as a standalone service. We had the classic split: ClickHouse for real-time analytics APIs, BigQuery for data warehouse workloads. Data replicated between both, costs adding up. Managed ClickHouse worked but was too expensive to put our warehouse workload into. Self-hosted meant replica nodes doubling storage and waiting days to copy 25TB to new replicas. What we really needed was separated storage and compute. SharedMergeTree does this, but it's proprietary to ClickHouse Cloud. So we built our own version. Migrated everything in, both the real-time APIs and warehouse workloads. No more replicating between systems. Been running it in production across 5 projects. The main wins: compute scales without replication tax, separate endpoints for ingest/API/ad-hoc so they can't interfere, no ZooKeeper or replica management on your end. Honest tradeoffs: we're early, EU only right now. Small workloads on a single node with local NVMe will be faster, the separation adds a bit of latency. If you're running something small and static, a self-hosted node is probably simpler. Where this shines is large datasets and elastic workloads where you don't want to babysit infra. Check it out: https://obsessiondb.com, happy to go deep on architecture, merges, failover, whatever.
More dev tools this month
the category →
Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 2d ago · opentrailpaper.com
Launched alongside, January 2026
the whole month →- IN
Hey HN! I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents. I didn't write a single line of code. Of course no-code doesn't mean no-engineering. This project took a lot more manual labor than I'd hoped! I wrote a deep dive on the workflow and some thoughts about the future of AI coding and creativity: http://cannoneyed.com/projects/isometric-nyc
AI · Jan 2026 · cannoneyed.com
Automatic AI-powered code reviews the moment you open a PR
Dev tools · Jan 2026 · kilo.ai
