Technical
How We Reduced Query Time by 95% for 4 Billion Row Dashboards
This blog highlights our journey about how we fixed our looker powered dashboards with slow query performance to rapid dashboard loading times
May 12, 2026
4 minutes to read
Author Profile
Engineering Leader
Hemanth Mantri is an engineering leader at Harness, leading geo-distributed teams behind the Harness Code Repository and Fast CI initiatives. Previously, he spent over eight years at Nutanix as a senior engineering manager and tech lead on the Acropolis Hypervisor (AHV) VM control plane, shipping VM lifecycle features, APIs/CLIs, synchronous replication, and cross-cluster live migration. He holds an MS in Computer Science from The University of Texas at Austin and dual degrees in Computer Science and Economics from BITS Pilani, with a focus on scalable systems for developer productivity. In addition to product leadership, he writes on performance optimization and system design.
A pinned write-up worth starting with.


Database DevOps
This blog highlights our journey about how we fixed our looker powered dashboards with slow query performance to rapid dashboard loading times

Technical
This blog highlights our journey about how we fixed our looker powered dashboards with slow query performance to rapid dashboard loading times

Technical
This blog highlights our journey about how we fixed our looker powered dashboards with slow query performance to rapid dashboard loading times
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