
MongoDB Aggregation Pipeline - A Practical Guide From $match to $lookup
A hands-on guide to the MongoDB aggregation pipeline. Master $match, $group, $sort, and $lookup by building a real reporting query one stage at a time
We are the database engineers behind fast, reliable data platforms. Real-time pipelines and modern infrastructure on ClickHouse, MongoDB, Couchbase, StarRocks, and Kafka, built to keep pace with your business.
What we do
Fast, reliable data systems, without the overnight batch jobs or the operational drag.
Change data capture streams every write into ClickHouse as it happens. No overnight batch, no lag, just fresh data your team can act on.
Deep expertise in ClickHouse, MongoDB, and Couchbase. Architecture, performance tuning, high availability, and migrations that stay boring, in the best way.
Managed-database convenience on your own Kubernetes. The same one-click automation, a fraction of the cost, and zero vendor lock-in.
We build the tools we wish existed: a ClickHouse console, a CDC connector, a query profiler, point-in-time backups, and database branching.
Our tech stack
How we work
Milliseconds, not batch windows.
Open tools, honest advice, zero lock-in.
Production grade from the first commit.
We sit with your team, not above it.
Blog & knowledge base
Field notes from our engineers on ClickHouse, MongoDB, Kafka, and real-time data.
FAQ
We are the database engineers you call when data needs to be fast and reliable. We design and run real-time pipelines and modern infrastructure, and we help teams get the most from ClickHouse, MongoDB, and Couchbase.
ClickHouse, MongoDB, and Couchbase, with streaming through Kafka, search with Elasticsearch, and cloud on Google Cloud and AWS.
Yes. With our partners we run a private database-as-a-service on your own Kubernetes, so your data stays yours, with predictable cost and no lock-in.
Tell us about your setup on the contact form below. We reply within one business day, often sooner.
Contact
Tell us what you are building. We reply within one business day, often sooner.