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When a global ClickHouse client is available, run two parallel ClickHouse queries (JSONEachRow) to fetch per-app open_count and distinct user_count, parse results into Maps (parsing counts as integers). If ClickHouse is not present, fall back to the original MySQL aggregate queries. Apps list still comes from MySQL as before. This enables using ClickHouse for analytics performance while preserving the existing behavior as a fallback.
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When a global ClickHouse client is available, run two parallel ClickHouse queries (JSONEachRow) to fetch per-app open_count and distinct user_count, parse results into Maps (parsing counts as integers). If ClickHouse is not present, fall back to the original MySQL aggregate queries. Apps list still comes from MySQL as before. This enables using ClickHouse for analytics performance while preserving the existing behavior as a fallback.