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aws cli で DynamoDB を使う

Last updated at Posted at 2017-10-07

city という名前のテーブルを作成

go_create.sh
aws dynamodb create-table --table-name 'cities' \
--attribute-definitions '[{"AttributeName":"key","AttributeType": "S"}]' \
--key-schema '[{"AttributeName":"key","KeyType": "HASH"}]' \
--provisioned-throughput '{"ReadCapacityUnits": 5,"WriteCapacityUnits": 5}'

データの挿入

go_insert.sh
TABLE='cities'
aws dynamodb put-item --table-name $TABLE --item '{ "population": { "N": "38164" }, "date_mod": { "S": "1950-6-22" }, "key": { "S": "t0924" }, "name": { "S": "足利" } }'
#
aws dynamodb put-item --table-name $TABLE --item '{ "population": { "N": "72391" }, "date_mod": { "S": "1950-8-30" }, "key": { "S": "t0925" }, "name": { "S": "日光" } }'
#
aws dynamodb put-item --table-name $TABLE --item '{ "population": { "N": "56148" }, "date_mod": { "S": "1950-9-7" }, "key": { "S": "t0926" }, "name": { "S": "下野" } }'
#

データのスキャン

aws dynamodb scan --table-name cities

キーを指定してデータの取得

aws dynamodb get-item --table-name cities  --key '{ "key": {"S": "t0926" }  }'

キーを指定してデータの削除

aws dynamodb delete-item --table-name cities  --key '{"key": {"S": "t0924"}}'

テーブルの削除

aws dynamodb delete-table --table-name cities

レコード数のカウント

aws dynamodb scan --table-name cities --select "COUNT"

テーブル名の取得

aws dynamodb list-tables

テーブルに関する情報の取得

aws dynamodb describe-table --table-name cities

バックアップ

バックアップの作成

TABLE="cities"
aws dynamodb create-backup --table-name $TABLE \
	--backup-name $TABLE"-Backup"

バックアップの一覧

aws dynamodb list-backups

別テーブルにリストア

TARGET="cities2"
#
aws dynamodb restore-table-from-backup \
	--target-table-name $TARGET \
--backup-arn arn:aws:dynamodb:ap-northeast-1:372407516321:table/cities/backup/01658017317622-d319e000

バックアップの削除

aws dynamodb delete-backup \
--backup-arn arn:aws:dynamodb:ap-northeast-1:372407516321:table/cities/backup/01658017317622-d319e000

ローカルに立てた DynamoDB を取り扱う時

テーブル名の取得

aws dynamodb list-tables --endpoint-url http://localhost:8000

データのスキャン

aws dynamodb scan --table-name cities --endpoint-url http://localhost:8000

次のバージョンで確認しました。

$ aws --version
aws-cli/2.7.12 Python/3.9.11 Linux/5.15.0-25-generic exe/x86_64.ubuntu.22 prompt/off
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