Case Study: HighLevel achieves faster, scalable data operations with ClickHouse Cloud

How HighLevel rebuilt its data platform for speed, scale, and simplicity on ClickHouse Cloud

HighLevel is an all-in-one marketing and sales platform serving more than 90,000 agencies and 3 million small businesses, but its rapid growth strained its old mix of MySQL, Elasticsearch, Firestore, and a document database. As data volumes surged across lead activity, workflow logs, notifications, and billing dashboards, queries slowed, logs backed up, and operational complexity made the platform harder to scale.

With ClickHouse Cloud, HighLevel unified operational and analytical workloads on a single low-latency platform. ClickHouse helped reduce storage by up to 88%, cut key query latencies from seconds to under 200 ms, and power billions of daily events with just a few replicas; in one dashboard use case, P95 latency dropped to 50–100 ms, while another workload shrank from about 60 TB in Elasticsearch to 6.27 TB in ClickHouse.

HighLevel

Kiran Raparti

VP of Engineering