ElastiCache Flashcards by Justin Moser | Brainscape

Q

Elasticache

A

In-memory data stores

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Q

Benefit

Elasticache

A

Very low latency

Elasticache

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Q

Use cases (2)

Elasticache

A

Database layer caching
Session storage

Elasticache

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Q

benefit to DB

Elasticache

A

reduces load for intensive read workloads

Elasticache

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Q

stateless session management

Elasticache

A

user sessions stored in one cache for many instances of application

Elasticache

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Q

fully managed

Elasticache

A

AWS takes care of security, patching, DR

Elasticache

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Q

application requirement

Elasticache

A

major changes in application required

Elasticache

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Q

REDIS

Elasticache

A

DB Caching

Elasticache

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Q

features (4)

REDIS

A

scaling
replicas
multi-AZ
backup

REDIS

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Q

supports sets and sorted sets

REDIS

A

groups of unique strings

REDIS

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Q

MEMCACHED

Elasticache

A

session state storage

Elasticache

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Q

sharding

MEMCACHED

A

muli-node partitioning of data

MEMCACHED

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Q

feature

MEMCACHED

A

multithreaded architecture

MEMCACHED

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Q

Authentication supported (2)

REDIS

A

IAM Authentication
Redis AUTH

REDIS

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Q

IAM policy usage

REDIS

A

API-level security only

REDIS

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Q

Redis AUTH

REDIS

A

extra security in addition to security groups

REDIS

Q

can set this when creating a cluster

Redis AUTH

A

password/token

Redis AUTH

Q

feature supported

Redis AUTH

A

SSL in flight encryption

Redis AUTH

Q

authentication feature

MEMCACHED

A

SASL-based authentication

MEMCACHED

Q

Elacticache patterns (3)

Elasticache

A

Lazy loading
write through
session

Elasticache

Q

Lazy loading

Elacticache pattern

A

all read data is cached

Elacticache pattern

Q

Write through

Elacticache pattern

A

data is added or updated in cache when written to DB

Elacticache pattern

Q

benefit

Write through

A

data is never stale

Write through

Q

Redis with sorted sets use case

REDIS

A

gaming leaderboard

REDIS