Alexa Salon Lab Lesson 1 - DynamoDB-

Transcript

1. 1 DynamoDB

2. 2 DynamoDB ✦ NoSQLܗࣜͷσʔλϕʔεαʔϏε ✦ αʔόʔεϖοΫ΍༰ྔ͸ؾʹ͠ͳͯ͘΋ྑ͍ ʢϚωʔδυαʔϏε) ✦ ӬଓԽαʔϏεͱͯ͠Alexa-SDKʹσϑΥϧτ Ͱૢ࡞API͕͍͍ͭͯΔ

   ✦ ॳ৺ऀ͕Ҿ͔͔ͬΔͷ͸ʮΩʔʯͱʮϢχοτʯ

3. 3 DynamoDB var alexa = Alexa.handler(event, context); alexa.dynamoDBTableName = 'AlexaUserData_V1';

4. 4 DynamoDB Alexa.SkillBuilders.standard() .addRequestHandlers(LaunchRequestHandler) .withTableName("AlexaUserData_V2") .withAutoCreateTable(true) .lambda();

5. 5 DynamoDB handlerInput.attributesManager.setPersistentAttributes(dynamos) ; await handlerInput.attributesManager.savePersistentAttributes();

6. 6 DynamoDB Ωʔ / ΠϯσοΫεͷ͍͍ͭͯΔItem͕ݕࡧͰ͖Δ

7. 7 DynamoDB ϓϥΠϚϦΩʔ Hash Key Range Key Hash Key OR

8. 8 DynamoDB ηΧϯμϦΠϯσοΫε Hash Key Range Key Hash Key Local

   Secondary Index Range Key Global Secondary Index

9. 9 DynamoDB ΩϟύγςΟʔϢχοτ

10. 10 DynamoDB ΩϟύγςΟʔϢχοτ WCU (Write Capacity Unit) RCU (Read Capacity

    Unit)

11. 11 DynamoDB ΩϟύγςΟʔϢχοτ WCU (Write Capacity Unit) RCU (Read Capacity

    Unit) 1 4KB 1 2 1 1KB 1

12. 12 DynamoDB DynamoDBͷಡΈࠐΈ GetItem BatchGetItem Query Scan

13. 13 DynamoDB

14. 14 DynamoDB ಡΈࠐΈ༰ྔ +

15. 15 DynamoDB