I have a few questions regarding s3: 1. After we overwrite an object in S3 is there any issues like for a brief amount of time the read request will show older version of the object and if this is true what will be the time all the servers will be updated to the new version? 2. Is S3 suitable for real time applications that require immediate access to the latest data after an overwrite? 3. Is because of these reasons we should go with elasticache? 4. How ElastiCache ensure this read after overwrite consitency?

Hi, 1. S3 supports strong read-after-write consistency: https://aws.amazon.com/blogs/aws/amazon-s3-update-strong-read-after-write-consistency/ 2. based on 1., yes 3. No. Elasticache is to be used more when very low-latency is expected: elasticache reads from RAM while S3 from disk 4. No. Elasticache does not provide read after write consistency "out of the box": see question "`How does ElastiCache keep my read replica up-to-date with its primary node ?`" of https://aws.amazon.com/elasticache/faqs/ Best, Didier

Read consistency after overwrite of S3 and ElastiCache

I have a few questions regarding s3:

After we overwrite an object in S3 is there any issues like for a brief amount of time the read request will show older version of the object and if this is true what will be the time all the servers will be updated to the new version?
Is S3 suitable for real time applications that require immediate access to the latest data after an overwrite?
Is because of these reasons we should go with elasticache?
How ElastiCache ensure this read after overwrite consitency?

トピック

ストレージデータベース

タグ

Amazon Simple Storage Service (S3)Amazon ElastiCache

言語

English

rePost-User-1893682

質問済み 4ヶ月前263ビュー

1回答

新しい順
投票が多い順
コメントが多い順

これらの回答は役に立ちましたか？コミュニティがあなたの知識を活用できるように、正解に賛成票を投じてください。

Hi,

S3 supports strong read-after-write consistency: https://aws.amazon.com/blogs/aws/amazon-s3-update-strong-read-after-write-consistency/
based on 1., yes
No. Elasticache is to be used more when very low-latency is expected: elasticache reads from RAM while S3 from disk
No. Elasticache does not provide read after write consistency "out of the box": see question "How does ElastiCache keep my read replica up-to-date with its primary node ?" of https://aws.amazon.com/elasticache/faqs/ Best,

Didier

エキスパート

Didier_Durand

回答済み 4ヶ月前

エキスパート

MaxCloud

レビュー済み 4ヶ月前

エキスパート

Riku_Kobayashi

レビュー済み 4ヶ月前

rePost-User-1893682
4ヶ月前

So in elastiCache we will the face the issue as discussed above of getting the older version. Is there any solution for that in cache? Is reading from primary only will help ?

Read consistency after overwrite of S3 and ElastiCache

関連するコンテンツ