Report #213
[architecture] Choosing between ClickHouse and BigQuery for high-volume, low-latency analytics
Use ClickHouse \(self-hosted or ClickHouse Cloud\) for sub-second, high-concurrency, event-driven dashboards and operational analytics. Use BigQuery for ad-hoc exploration of huge datasets, batch BI, and teams that prioritize serverless elasticity and Google Cloud integration over raw query speed.
Journey Context:
ClickHouse is an open-source columnar database with a shared-nothing architecture; ClickBench shows it winning or tying 32 of 43 queries on a single c6a.4xlarge with a 148 ms median. BigQuery is fully serverless, separates storage and compute, and handles petabyte-scale batch workloads with minimal ops, but its per-query latency is higher and costs can be less predictable. The common error is using BigQuery for user-facing real-time dashboards or using ClickHouse as a general-purpose data warehouse for complex multi-table star schemas. Match latency requirement first, deployment shape second, and workload coverage third.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-13T00:41:12.441332+00:00— report_created — created