Files
HC900-Crawler/scripts/sql/p1_historian.sql
windpacer 3506a67c28 feat(report): P1b 연속집계 history_1min — 1초 버퍼 60초 롤업(장기 무손실)
온라인 히스토리안 2계층: history_1s(최근 14일, 고해상) + history_1min(장기, 60초).

- history_1min 연속집계(timescaledb.continuous): time_bucket('1 min') + last(value)/last(controller_id).
  refresh 정책(start 3h, end 10min, 5분마다) → 집계 lag ≪ 보존윈도(14일)이라 1초 raw evict 전 materialize.
- Hc900FastHistoryService.EnsureSchemaAsync에 cagg 생성+정책 멱등 추가. SQL 파일 동기화.

검증: 2계층 값 일치(1s last == 1min cagg), 정책 활성, 무손실 불변식 충족.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-15 07:13:12 +09:00

36 lines
1.8 KiB
SQL

-- P1a: 1초 링버퍼 히스토리안 (hc900.history_1s)
-- 적용: psql "host=localhost dbname=iiot_platform user=postgres" -f scripts/sql/p1_historian.sql
-- 서비스(Hc900FastHistoryService)가 기동 시 동일 DDL을 멱등 적용하므로 수동 실행은 선택.
SET search_path TO hc900;
CREATE TABLE IF NOT EXISTS hc900.history_1s (
tagname text NOT NULL,
recorded_at timestamptz NOT NULL DEFAULT now(),
value text,
controller_id text
);
-- 하이퍼테이블 (1시간 청크 — evict/압축 단위)
SELECT create_hypertable('hc900.history_1s', 'recorded_at',
chunk_time_interval => INTERVAL '1 hour', if_not_exists => TRUE);
-- 압축 (6시간 지난 청크) + 링버퍼 보존 (14일 — 청크 DROP, 비용≈0)
ALTER TABLE hc900.history_1s SET (timescaledb.compress, timescaledb.compress_segmentby = 'tagname');
SELECT add_compression_policy('hc900.history_1s', INTERVAL '6 hours', if_not_exists => TRUE);
SELECT add_retention_policy('hc900.history_1s', INTERVAL '14 days', if_not_exists => TRUE);
CREATE INDEX IF NOT EXISTS ix_h1s_tag ON hc900.history_1s (tagname, recorded_at DESC);
-- P1b: 연속집계 history_1min — 1초 버퍼 evict 전 60초 롤업(장기 무손실, 2계층)
CREATE MATERIALIZED VIEW IF NOT EXISTS hc900.history_1min
WITH (timescaledb.continuous) AS
SELECT time_bucket('1 minute', recorded_at) AS bucket, tagname,
last(value, recorded_at) AS value, last(controller_id, recorded_at) AS controller_id
FROM hc900.history_1s GROUP BY bucket, tagname
WITH NO DATA;
-- 집계 lag(≤3h) ≪ 보존 윈도(14일) → raw 삭제 전 materialize 보장
SELECT add_continuous_aggregate_policy('hc900.history_1min',
start_offset => INTERVAL '3 hours', end_offset => INTERVAL '10 minutes',
schedule_interval => INTERVAL '5 minutes', if_not_exists => TRUE);