aldy120 / s3-note

Note for Amazon S3
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S3 introduction #1

Open aldy120 opened 5 years ago

aldy120 commented 5 years ago

S3 introduction

You can store and retrieve S3 data at anytime, from anywhere.

access control

一些規則,規定誰可以做些什麼事情。

authentication

如何驗證你是誰

features

Concepts

bucket

bucket name: johnsmith key: photos/puppy.jpg will produce s3 url: http://johnsmith.s3.amazonaws.com/photos/puppy.jpg

object

key

region

data consistency model

eventually consistency 某些未先查過的 put new object 是 read-after-write consistency

atomic (讀取非新即舊,不停止服務)

do not support object locking (幾乎同時寫的話,後寫者勝)

eventually consistency 有更大的彈性,例如 latency 可能增加,因為不用再去檢查其他 replica 是否是最新的了。throughput 也可能增加,但我不知道為什麼,文件寫的。