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acg prac > DynamoDB > Flashcards

DynamoDB Flashcards

1
Q

fast and flexible NoSQL database service for all applications that need consistent single-digit millisecond latency at scale.

A

DynamoDB

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2
Q

Consistency across all copies of data is usually reached within a second

A

Eventually consistent

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3
Q

read the returns a result that reflects all writes that received a successful response

A

Strongly consistent

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4
Q

Fully managed highly available in-memory cache

A

DynamoDB Accelerator (DAX)

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5
Q

Pricing for Dynamo DB on-demand

A

Pay-per-request

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6
Q

DynamoDB encryption at rest using

A

KMS

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7
Q

DynamoDB is stored on

A

SSD storage

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8
Q

Spread across _ geographically distinct data centers

A

3

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9
Q

default dynamoDB reads

A

eventually consistent

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10
Q

Atomic, Consistent, Isolated, Durable

A

ACID

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11
Q

All changes to the data must be performed successfully or not at all

A

Atomic

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12
Q

Data must be in a consistent state before and after the transaction

A

Consistent

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13
Q

No other process can change the data while the transaction is running

A

Isolated

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14
Q

The changes made by a transaction must persist

A

Durable

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15
Q

provides developers atomicity, consistency, isolation, and durability across 1 or more tables within a single AWS account and region

A

DynamoDB transactions

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16
Q

Full backups at any time with zero impact on table performance or availability

A

On-demand backups

17
Q

Protects against accidental writes or delete with the ability to restore from 5 minutes ago to 35 days ago

A

Point-in-time recovery

18
Q

Is point-in-time recovery enabled by default

A

No

19
Q

Time-ordered sequence of item-level changes in a table

A

DynamoDB Streams

20
Q

Replicating DynamoDB to another region allowing globally distributed applications

A

Multi-Region Replication

21
Q

How to spread Dynamo

A

acg prac (29 decks)

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