Cloud Architecture
May 3, 2026 · Big Data
Cutting Log Storage Costs 70% for 100 Billion Daily Logs: A Full Guide to Hot‑Cold Separation Architecture
This article explains why massive log systems must adopt hot‑cold separation, walks through the problem analysis, SLO definition, component design, Kafka partition planning, Elasticsearch and ClickHouse tuning, Parquet archiving, a unified query gateway with async cold queries, governance practices, cost modeling, common pitfalls, and a roadmap for evolving the platform.
ElasticsearchKafkahot cold separation
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