Amazon MemoryDB

aws Cacheaws-memorydb

Durable in-memory Valkey and Redis OSS database with a Multi-AZ transactional log.

Provider: aws
Kind: Cache
Category: Data
Official docs: https://docs.aws.amazon.com/memorydb/latest/APIReference/API_CreateCluster.html

Properties · 6 set by this component

property	type	values	required	kind default	this component
dataTiering · component property	boolean	—	no	false	inherited
engine · component property	enum	valkey \| redis-oss	no	—	inherited
evictionPolicy	enum	lru \| lfu \| ttl \| none	no	—	inherited
hashing · advanced	enum	none \| consistent	no	none	inherited
invalidation	enum	ttl \| event \| none	no	ttl	inherited
managed	boolean	—	no	false	▸ true
materialised · advanced	boolean	—	no	false	inherited
multiRegion · component property	boolean	—	no	false	inherited
numReplicasPerShard · component property	integer	—	no	1	inherited
numShards · component property	integer	—	no	1	inherited
persistence	boolean	—	no	false	▸ true
readBarrier · advanced	boolean	—	no	false	inherited
replication	enum	none \| single-az \| multi-az \| multi-region	no	none	▸ multi-az
shards	integer	—	no	—	inherited
structure · advanced	enum	key-value \| bloom-filter \| hash-set \| sorted-set	no	key-value	▸ key-value
tier · advanced	enum	core \| edge	no	core	▸ core
ttlJitter · advanced	boolean	—	no	false	inherited
ttlSeconds	integer	—	no	—	inherited
usedAsPrimaryStore · advanced	boolean	—	no	false	▸ true

Rules that apply · 3

Every rule whose selector covers this component's kind or its category. Whether a rule fires depends on the design: its properties, its edges and its groups.

Cache used as primary store without persistenceerror

cache-as-primary-store-without-persistence

This cache is the only copy of its data and has persistence turned off. A restart loses the data outright.

— all of these hold:
— the node's `usedAsPrimaryStore` is true
— the node's `persistence` is false

Cache without eviction policywarning

cache-missing-eviction-policy

A cache with no declared eviction policy inherits whatever the vendor chose, and most vendors default to evicting nothing. The cache fills up and then starts refusing writes.

— any of these hold:
— the node's `evictionPolicy` has no value
— the node's `evictionPolicy` is "none"

Materialised cache without a rebuild patherror

materialised-cache-without-rebuild-path

A cache holding materialised views has to be rebuildable from a durable store or a worker. With nothing feeding it, a cold cache is a permanent gap rather than a slow start.

— all of these hold:
— the node's `materialised` is true
— this does not hold:
— the node has at least one incoming edge from a sql-database, nosql-database, worker or stream

Use it in a design

nodes:
  - { id: "memorydb", component: "aws-memorydb" }

Other Cache products · 36

ApsaraDB for Memcachealibaba-apsaradb-memcachealibabacloudcache ApsaraDB for Redisalibaba-apsaradb-redisalibabacloudcache Amazon DynamoDB Accelerator (DAX)aws-daxawscache Amazon ElastiCacheaws-elasticacheawscache Azure Cache for Redisazure-cache-for-redisazurecache Azure Managed Redisazure-managed-redisazurecache Generic cachecachecache Cache clustercache-clustercache cogneecogneecache Dragonflydragonflycache EVCacheevcachecache Microsoft Garnetgarnetcache VMware GemFiregemfirecache Graphitigraphiticache Hazelcasthazelcastcache Apache Igniteignitecache Infinispaninfinispancache KeyDBkeydbcache Lettalettacache Mem0mem0cache Memcachedmemcachedcache Redisrediscache Redis Cloudredis-cloudcache Squidsquidcache Trickstertrickstercache Upstash Redisupstashcache Valkeyvalkeycache Varnish Cachevarnishcache Zepzepcache Memorystore for Redisgoogle-memorystoregcpcache Memorystore for Memcachedgoogle-memorystore-memcachedgcpcache Memorystore for Redis Clustergoogle-memorystore-redis-clustergcpcache Memorystore for Valkeygoogle-memorystore-valkeygcpcache IBM Cloud Databases for Redisibm-databases-for-redisibmcache OCI Cache with Redisoci-cache-redisocicache OCI Cache with Valkeyoci-cache-valkeyocicache

Source

1# yaml-language-server: $schema=../../schema/component.schema.json
2# Amazon MemoryDB: durable in-memory database compatible with Valkey and Redis OSS. "What is MemoryDB"
3# describes data stored durably across multiple Availability Zones in a Multi-AZ transactional log and
4# usable as a primary database; "At-Rest Encryption in MemoryDB" says at-rest encryption is always
5# enabled; "CreateCluster" defaults a cluster to 1 shard with 1 replica per shard.
6schemaVersion: "1"
7type: "component"
8id: "aws-memorydb"
9kind: "cache"
10provider: "aws"
11docs: "https://docs.aws.amazon.com/memorydb/latest/APIReference/API_CreateCluster.html"
12defaults:
13  managed: true
14  persistence: true
15  usedAsPrimaryStore: true
16  replication: "multi-az"
17  structure: "key-value"
18  tier: "core"
19properties:
20  engine:
21    type: "enum"
22    values: ["valkey", "redis-oss"]
23  numShards:
24    type: "integer"
25    default: 1
26  numReplicasPerShard:
27    type: "integer"
28    default: 1
29  multiRegion:
30    type: "boolean"
31    default: false
32  dataTiering:
33    type: "boolean"
34    default: false

The same page as markdown, for an agent: /catalogue/components/aws-memorydb.md