PostgreSQL 18 beta 1 (พ.ค. 2025): AIO เร็ว 2-3x + UUIDv7 + OAuth Login
PostgreSQL 18 beta 1 เพิ่ม async I/O (io_uring) B-tree skip scan GIN parallel build UUIDv7 OAuth 2.0 pg_upgrade เร็วขึ้น EXPLAIN ANALYZE ละเอียด Data checksums default
PostgreSQL 18 vs 17 Performance
| ฟีเจอร์ | PG 17 | PG 18 beta 1 |
|---|---|---|
| I/O | Sync | AIO 2-3x เร็ว |
| B-tree | Basic | Skip scan OR/IN |
| GIN | Sequential | Parallel build |
| UUID | v1/v4 | v7 timestamp |
| Auth | SCRAM | OAuth 2.0 |
ฟีเจอร์เด่น (ใช้งานจริง)
1. Async I/O (io_uring)
-- Sequential scan เร็ว 3x
SELECT * FROM logs WHERE date > '2025-01-01';
-- Vacuum เร็ว 2x (maintenance)
VACUUM ANALYZE large_table;
2. B-tree Skip Scan
-- PG17: Full scan | PG18: Skip scan
SELECT * FROM users WHERE last_name LIKE 'K%' AND first_name = 'Somchai';
3. UUIDv7 (Time-ordered)
-- เรียงตามเวลา auto (index friendly)
INSERT INTO orders (id) VALUES (uuidv7());
SELECT * FROM orders ORDER BY id DESC LIMIT 10;
4. OAuth 2.0 Login
# pg_hba.conf
host all all 0.0.0.0/0 oauth oidc_provider=google
pg_upgrade ใหม่ (เร็วกว่าเดิม)
✅ Parallel processing
✅ Swap directories (no copy)
✅ Query stats preserved
✅ Downtime ลด 80%
EXPLAIN ANALYZE ละเอียด
EXPLAIN (ANALYZE, BUFFERS, CPU, WAL)
SELECT * FROM sales WHERE date >= '2025-01-01';
Buffers: shared hit=50000 read=1000
CPU: 0.25s | WAL: 2MB | I/O: 150ms
Setup Beta 1 (Docker)
docker run -d \
-p 5432:5432 \
-e POSTGRES_PASSWORD=pass \
--name pg18 \
postgres:18-beta1
# Checksums default ON
docker exec pg18 pg_controldata | grep checksum
Production Checklist
☑️ Test AIO (io_uring kernel 5.1+)
☑️ B-tree skip scan workloads
☑️ GIN JSONB indexes
☑️ OAuth integration
☑️ pg_upgrade dry-run
☑️ EXPLAIN ANALYZE new stats
Migration Guide
1. pg_dumpall → Logical backup
2. pg_upgrade --check
3. Parallel upgrade (8 workers)
4. Query stats preserved
5. Test UUIDv7 indexes
6. Switchover (downtime <5min)
Thai Workloads เหมาะมาก
📊 E-commerce: Order timeline (UUIDv7)
🏪 POS: High TPS (AIO)
📈 Analytics: GIN JSONB search
🏠 Home lab: OAuth Google login
Stable Release
Beta 1: พ.ค. 2025
RC1: ส.ค. 2025
Stable: ก.ย.-ต.ค. 2025