李建琦
6d655c9903
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22 lines
955 B
SQL
22 lines
955 B
SQL
-- Add ttft_sample_count to ops_metrics_hourly / ops_metrics_daily.
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--
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-- first_token_ms (TTFT) is only recorded for streaming requests, but the
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-- dashboard previously weighted merged TTFT percentiles by success_count
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-- (all successful requests, streaming + non-streaming). That diluted/skewed
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-- the merged TTFT figures whenever non-streaming traffic was present.
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--
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-- Store the real streaming sample count per bucket so TTFT percentiles can be
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-- weighted by the number of rows that actually contributed a first_token_ms.
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--
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-- Existing rows default to 0; they will be repopulated on the next hourly
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-- re-aggregation pass. Migration is idempotent and safe to re-run.
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SET LOCAL lock_timeout = '5s';
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SET LOCAL statement_timeout = '10min';
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ALTER TABLE ops_metrics_hourly
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ADD COLUMN IF NOT EXISTS ttft_sample_count BIGINT NOT NULL DEFAULT 0;
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ALTER TABLE ops_metrics_daily
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ADD COLUMN IF NOT EXISTS ttft_sample_count BIGINT NOT NULL DEFAULT 0;
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