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postgres-patterns

쿼리 최적화, 스키마 설계, 인덱싱, 보안을 위한 PostgreSQL 데이터베이스 패턴. Supabase 모범 사례 기반.

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name postgres-patterns description 쿼리 최적화, 스키마 설계, 인덱싱, 보안을 위한 PostgreSQL 데이터베이스 패턴. Supabase 모범 사례 기반. origin ECC PostgreSQL 패턴 PostgreSQL 모범 사례 빠른 참조. 자세한 가이드는 database-reviewer 에이전트를 사용하세요. 활성화 시점 SQL 쿼리 또는 마이그레이션을 작성할 때 데이터베이스 스키마를 설계할 때 느린 쿼리를 문제 해결할 때 Row Level Security를 구현할 때 커넥션 풀링을 설정할 때 빠른 참조 인덱스 치트 시트 쿼리 패턴 인덱스 유형 예시 WHERE col = value B-tree (기본값) CREATE INDEX idx ON t (col) WHERE col > value B-tree CREATE INDEX idx ON t (col) WHERE a = x AND b > y Composite CREATE INDEX idx ON t (a, b) WHERE jsonb @> '{}' GIN CREATE INDEX idx ON t USING gin (col) WHERE tsv @@ query GIN CREATE INDEX idx ON t USING gin (col) 시계열 범위 BRIN CREATE INDEX idx ON t USING brin (col) 데이터 타입 빠른 참조 사용 사례 올바른 타입 지양 ID bigint int , random UUID 문자열 text varchar(255) 타임스탬프 timestamptz timestamp 금액 numeric(10,2) float 플래그 boolean varchar , int 일반 패턴 복합 인덱스 순서: -- Equality columns first, then range columns CREATE INDEX idx ON orders (status, created_at); -- Works for: WHERE status = 'pending' AND created_at > '2024-01-01' 커버링 인덱스: CREATE INDEX idx ON users (email) INCLUDE (name, created_at); -- Avoids table lookup for SELECT email, name, created_at 부분 인덱스: CREATE INDEX idx ON users (email) WHERE deleted_at IS NULL ; -- Smaller index, only includes active users RLS 정책 (최적화): CREATE POLICY policy ON orders USING (( SELECT auth.uid()) = user_id); -- Wrap in SELECT! UPSERT: INSERT INTO settings (user_id, key, value ) VALUES ( 123 , 'theme' , 'dark' ) ON CONFLICT (user_id, key) DO UPDATE SET value = EXCLUDED.value; 커서 페이지네이션: SELECT * FROM products WHERE id > $last_id ORDER BY id LIMIT 20 ; -- O(1) vs OFFSET which is O(n) 큐 처리: UPDATE jobs SET status = 'processing' WHERE id = ( SELECT id FROM jobs WHERE status = 'pending' ORDER BY created_at LIMIT 1 FOR UPDATE SKIP LOCKED ) RETURNING * ; 안티패턴 감지 -- Find unindexed foreign keys SELECT conrelid::regclass, a.attname FROM pg_constraint c JOIN pg_attribute a ON a.attrelid = c.conrelid AND a.attnum = ANY (c.conkey) WHERE c.contype = 'f' AND NOT EXISTS ( SELECT 1 FROM pg_index i WHERE i.indrelid = c.conrelid AND a.attnum = ANY (i.indkey) ); -- Find slow queries SELECT query, mean_exec_time, calls FROM pg_stat_statements WHERE mean_exec_time > 100 ORDER BY mean_exec_time DESC ; -- Check table bloat SELECT relname, n_dead_tup, last_vacuum FROM pg_stat_user_tables WHERE n_dead_tup > 1000 ORDER BY n_dead_tup DESC ; 구성 템플릿 -- Connection limits (adjust for RAM) ALTER SYSTEM SET max_connections = 100 ; ALTER SYSTEM SET work_mem = '8MB' ; -- Timeouts ALTER SYSTEM SET idle_in_transaction_session_timeout = '30s' ; ALTER SYSTEM SET statement_timeout = '30s' ; -- Monitoring CREATE EXTENSION IF NOT EXISTS pg_stat_statements; -- Security defaults REVOKE ALL ON SCHEMA public FROM public; SELECT pg_reload_conf(); 관련 항목 에이전트: database-reviewer - 전체 데이터베이스 리뷰 워크플로우 스킬: clickhouse-io - ClickHouse 분석 패턴 스킬: backend-patterns - API 및 백엔드 패턴 Supabase Agent Skills 기반 (크레딧: Supabase 팀) (MIT License)
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