2021年5月31日
[AWS - DA - Guru] DynamoDB Exam Tips
摘要： DynamoDB Consistency Models Eventually Consistent Reads Consistency across all copies of data is usually reached within a second Best for read perfora 阅读全文
posted @ 2021-05-31 20:22 Zhentiw 阅读(190) 评论(0) 推荐(0)
[DynamoDB] DynamoDB as Session State Cache
摘要： It's common to use DynamoDB to store session state auto scaling feature vs ElastiCache: ElasitCache is in-memory, but DynamoDB is serverless Both are 阅读全文
posted @ 2021-05-31 20:01 Zhentiw 阅读(61) 评论(0) 推荐(0)
[AWS DA] DynamoDB Transactions Calculation for RCU / WCU
摘要： Consume 2 x of WCU / RCU 5 KB item size, transactional item writes per second: 3 (5 / 1) * 3 * 2 = 30 WCU Transactional Item reads per second: 5 Celli 阅读全文
posted @ 2021-05-31 19:55 Zhentiw 阅读(111) 评论(0) 推荐(0)
[AWS DA] DynamoDB CLI
摘要： Using --project-expression: aws dynamodb scan --table-name users --projection-expression "user_id,game_id" { "Items": [ { "user_id": { "S": "ersaessew 阅读全文
posted @ 2021-05-31 19:50 Zhentiw 阅读(125) 评论(0) 推荐(0)