Google Cloud BigtableGCP Bigtable

클라이언트
    ↓
Front-end Server (로드 밸런싱)
    ↓
Tablet Server (데이터 서빙)
    ↓
Colossus (Google 분산 파일 시스템)

Row Key → 사전순 정렬 저장
Column Family → 관련 컬럼 그룹

테이블: user-events
Row Key: user#12345#20240115T143000
Column Family: meta
  - meta:event_type = "purchase"
  - meta:ip = "192.168.1.1"
Column Family: payload
  - payload:item_id = "PROD-789"
  - payload:amount = "29900"

from google.cloud import bigtable
from google.cloud.bigtable import column_family

client = bigtable.Client(project='my-project', admin=True)
instance = client.instance('my-instance')
table = instance.table('user-events')

# 행 쓰기
row_key = b'user#12345#20240115T143000'
row = table.direct_row(row_key)
row.set_cell('meta', b'event_type', b'purchase')
row.set_cell('payload', b'amount', b'29900')
row.commit()

# 범위 스캔
for row in table.read_rows(start_key=b'user#12345#', end_key=b'user#12346#'):
    print(row.row_key, row.cells)