ElastiCache Serverless (Valkey/Redis)

This page describes how ElastiCache Serverless (Valkey/Redis) maps to services in the environment where the application runs, including backend choices, supported operations and service-specific behavior.

Supported environments

Scaleway

Check the operation and capability tables for the behavior your application depends on. A supported environment does not imply that every operation of the origin service is available.

How the targets compare

Each row compares a capability of ElastiCache Serverless (Valkey/Redis) with its adaptation on each target. A dash means this profile does not state the capability for that target.

Cloud Adapter

Capability	ElastiCache Serverless (Valkey/Redis)	Scaleway
API coverage	full	high

On Scaleway

Scaleway Managed Database for Redis

Operation	Area	Support	Depth	Notes
BITCOUNT	Bitmaps	Supported	Full surface	-
BITFIELD	Bitmaps	Supported	Full surface	arbitrary-width integer ops
BITFIELD_RO	Bitmaps	Supported	Full surface	read-only BITFIELD
BITOP	Bitmaps	Supported	Full surface	bitwise AND/OR/XOR/NOT
BITPOS	Bitmaps	Supported	Full surface	first set/clear bit
GETBIT	Bitmaps	Supported	Full surface	-
SETBIT	Bitmaps	Supported	Full surface	-
Backup / snapshot / restore	Durability	Partial	Most usage	not configurable through this mapping — the resource exposes no backup schedule or retention, so Scaleway’s own behaviour applies and the window you declared does not carry.
Persistence (RDB / AOF)	Durability	Partial	Most usage	not configurable through this mapping — the resource exposes no persistence control, so Scaleway’s own behaviour for Managed Redis applies rather than the policy you declared.
Search / JSON / modules (FT.* / JSON.*)	Extensions	Partial	Full surface	not configurable through this mapping. The engine version is PINNED at the single version Scaleway offers, so whatever that build includes is what you get; there is nothing to select between.
GEOADD	Geo	Supported	Full surface	-
GEODIST	Geo	Supported	Full surface	-
GEOHASH	Geo	Supported	Full surface	geohash strings
GEOPOS	Geo	Supported	Full surface	member coordinates
GEORADIUS	Geo	Supported	Full surface	deprecated radius query (use GEOSEARCH)
GEORADIUSBYMEMBER	Geo	Supported	Full surface	deprecated radius-by-member (use GEOSEARCH)
GEORADIUSBYMEMBER_RO	Geo	Supported	Full surface	read-only deprecated radius-by-member
GEORADIUS_RO	Geo	Supported	Full surface	read-only deprecated radius query
GEOSEARCH	Geo	Supported	Full surface	-
GEOSEARCHSTORE	Geo	Supported	Full surface	search + store result
HDEL	Hashes	Supported	Common	-
HEXISTS	Hashes	Supported	Most usage	-
HGET	Hashes	Supported	Common	-
HGETALL	Hashes	Supported	Common	-
HINCRBY	Hashes	Supported	Most usage	-
HINCRBYFLOAT	Hashes	Supported	Most usage	-
HKEYS	Hashes	Supported	Most usage	-
HLEN	Hashes	Supported	Most usage	-
HMGET	Hashes	Supported	Common	-
HMSET	Hashes	Supported	Full surface	deprecated alias of HSET
HRANDFIELD	Hashes	Supported	Full surface	-
HSET	Hashes	Supported	Common	-
HSETNX	Hashes	Supported	Most usage	set field if not exists
HSTRLEN	Hashes	Supported	Full surface	-
HVALS	Hashes	Supported	Most usage	-
PFADD	HyperLogLog	Supported	Full surface	-
PFCOUNT	HyperLogLog	Supported	Full surface	-
PFMERGE	HyperLogLog	Supported	Full surface	-
COPY	Keys & TTL	Supported	Full surface	copy key
DEL	Keys & TTL	Supported	Common	-
DUMP	Keys & TTL	Supported	Full surface	-
EXISTS	Keys & TTL	Supported	Common	-
EXPIRE	Keys & TTL	Supported	Common	-
EXPIREAT	Keys & TTL	Supported	Most usage	expire at unix time
EXPIRETIME	Keys & TTL	Supported	Most usage	absolute expiry time (s)
HSCAN	Keys & TTL	Supported	Most usage	cursor iteration
KEYS	Keys & TTL	Supported	Common	-
PERSIST	Keys & TTL	Supported	Common	-
PEXPIRE	Keys & TTL	Supported	Common	-
PEXPIREAT	Keys & TTL	Supported	Most usage	expire at ms unix time
PEXPIRETIME	Keys & TTL	Supported	Most usage	absolute expiry time (ms)
PTTL	Keys & TTL	Supported	Most usage	ms TTL
RANDOMKEY	Keys & TTL	Supported	Full surface	-
RENAME	Keys & TTL	Supported	Common	-
RENAMENX	Keys & TTL	Supported	Most usage	rename if target absent
RESTORE	Keys & TTL	Supported	Full surface	-
SCAN	Keys & TTL	Supported	Most usage	cursor iteration
SORT	Keys & TTL	Supported	Full surface	sort list/set/zset
SORT_RO	Keys & TTL	Supported	Full surface	read-only SORT (replica-safe)
SSCAN	Keys & TTL	Supported	Most usage	cursor iteration
TOUCH	Keys & TTL	Supported	Full surface	bump last-access
TTL	Keys & TTL	Supported	Common	-
TYPE	Keys & TTL	Supported	Common	-
UNLINK	Keys & TTL	Supported	Most usage	async delete
ZSCAN	Keys & TTL	Supported	Most usage	cursor iteration
BLMOVE	Lists	Supported	Full surface	blocking move
BLMPOP	Lists	Supported	Full surface	blocking multi-list pop
BLPOP	Lists	Supported	Most usage	blocking pop
BRPOP	Lists	Supported	Most usage	blocking pop
BRPOPLPUSH	Lists	Supported	Full surface	blocking legacy move
LINDEX	Lists	Supported	Most usage	-
LINSERT	Lists	Supported	Most usage	insert before/after pivot
LLEN	Lists	Supported	Most usage	-
LMOVE	Lists	Supported	Full surface	atomic move between lists
LMPOP	Lists	Supported	Full surface	multi-list pop
LPOP	Lists	Supported	Common	-
LPOS	Lists	Supported	Full surface	index of matching element
LPUSH	Lists	Supported	Common	-
LPUSHX	Lists	Supported	Full surface	push only if list exists
LRANGE	Lists	Supported	Most usage	-
LREM	Lists	Supported	Most usage	-
LSET	Lists	Supported	Most usage	set by index
LTRIM	Lists	Supported	Most usage	-
RPOP	Lists	Supported	Common	-
RPOPLPUSH	Lists	Supported	Most usage	legacy atomic move
RPUSH	Lists	Supported	Common	-
RPUSHX	Lists	Supported	Full surface	push only if list exists
Eviction (maxmemory-policy)	Memory	Partial	Most usage	reachable through the cluster’s engine settings map rather than as a dedicated field, so an eviction policy is expressible but is not carried across automatically — set it deliberately.
Replication / HA / failover	Operations	Out of scope	Most usage	replica configuration on the origin is reported rather than mapped, for the same reason as cluster mode. You get a standalone cache, and the build says so.
PSUBSCRIBE	Pub/Sub	Supported	Most usage	-
PUBLISH	Pub/Sub	Supported	Most usage	-
PUBSUB	Pub/Sub	Supported	Most usage	introspect pub/sub state
PUNSUBSCRIBE	Pub/Sub	Supported	Most usage	unsubscribe from patterns
SUBSCRIBE	Pub/Sub	Supported	Most usage	-
UNSUBSCRIBE	Pub/Sub	Supported	Most usage	unsubscribe from channels
Admin / config / replication commands (CONFIG / DEBUG / SAVE / SLAVEOF / CLUSTER admin)	Restricted admin	Out of scope	Full surface	administrative access is the cluster’s own user and password rather than the origin’s; the emitted credentials are what your application must use.
EVAL	Scripting	Supported	Most usage	server-side Lua
EVALSHA	Scripting	Supported	Most usage	-
EVALSHA_RO	Scripting	Supported	Most usage	read-only EVALSHA
EVAL_RO	Scripting	Supported	Most usage	read-only EVAL (replica-safe)
SCRIPT	Scripting	Supported	Most usage	-
AUTH / ACL / RBAC	Security	Supported	Most usage	the cluster requires a user name and takes a password, so authenticated access carries. As with the managed databases, the emitted credentials are the cluster’s own rather than the origin’s.
Encryption at rest	Security	Partial	Most usage	not configurable through this mapping — the resource exposes no at-rest encryption control, so Scaleway’s own behaviour applies and a declared key or toggle does not carry.
Encryption in transit (TLS)	Security	Supported	Common	TLS in transit is a direct setting on the emitted cluster.
AUTH	Server & connection	Supported	Common	authenticate the connection
ECHO	Server & connection	Supported	Common	-
HELLO	Server & connection	Supported	Common	RESP3 handshake + AUTH/SETNAME
INFO	Server & connection	Supported	Common	-
PING	Server & connection	Supported	Common	-
QUIT	Server & connection	Supported	Full surface	close the connection (deprecated)
SADD	Sets	Supported	Common	-
SCARD	Sets	Supported	Common	-
SDIFF	Sets	Supported	Most usage	+ SDIFFSTORE
SDIFFSTORE	Sets	Supported	Most usage	store difference
SINTER	Sets	Supported	Most usage	+ SINTERSTORE
SINTERCARD	Sets	Supported	Full surface	intersection cardinality
SINTERSTORE	Sets	Supported	Most usage	store intersection
SISMEMBER	Sets	Supported	Common	-
SMEMBERS	Sets	Supported	Common	-
SMISMEMBER	Sets	Supported	Full surface	multi-membership test
SMOVE	Sets	Supported	Full surface	atomic move between sets
SPOP	Sets	Supported	Most usage	pop random member(s)
SRANDMEMBER	Sets	Supported	Most usage	random member(s)
SREM	Sets	Supported	Common	-
SUNION	Sets	Supported	Most usage	+ SUNIONSTORE
SUNIONSTORE	Sets	Supported	Most usage	store union
Serverless / auto-scaling	Sizing	Out of scope	Most usage	your origin is SERVERLESS and the target is not. Scaleway Managed Redis is a provisioned cluster with a node type you choose, so the capacity that scaled itself becomes a size someone has to pick — the most important line on this card.
BZMPOP	Sorted sets	Supported	Full surface	blocking multi-key pop
BZPOPMAX	Sorted sets	Supported	Full surface	blocking pop highest
BZPOPMIN	Sorted sets	Supported	Full surface	blocking pop lowest
ZADD	Sorted sets	Supported	Common	-
ZCARD	Sorted sets	Supported	Common	-
ZCOUNT	Sorted sets	Supported	Most usage	count in score range
ZDIFF	Sorted sets	Supported	Full surface	+ ZDIFFSTORE
ZDIFFSTORE	Sorted sets	Supported	Most usage	store difference
ZINCRBY	Sorted sets	Supported	Most usage	-
ZINTER	Sorted sets	Supported	Full surface	+ ZINTERSTORE / ZINTERCARD
ZINTERCARD	Sorted sets	Supported	Full surface	intersection cardinality
ZINTERSTORE	Sorted sets	Supported	Most usage	store intersection
ZLEXCOUNT	Sorted sets	Supported	Full surface	count in lex range
ZMPOP	Sorted sets	Supported	Full surface	multi-key pop
ZMSCORE	Sorted sets	Supported	Full surface	multi-member scores
ZPOPMAX	Sorted sets	Supported	Most usage	pop highest score
ZPOPMIN	Sorted sets	Supported	Most usage	pop lowest score
ZRANDMEMBER	Sorted sets	Supported	Full surface	random member(s)
ZRANGE	Sorted sets	Supported	Most usage	-
ZRANGEBYLEX	Sorted sets	Supported	Full surface	lexicographic range
ZRANGEBYSCORE	Sorted sets	Supported	Most usage	-
ZRANGESTORE	Sorted sets	Supported	Full surface	store a range result
ZRANK	Sorted sets	Supported	Most usage	-
ZREM	Sorted sets	Supported	Common	-
ZREMRANGEBYLEX	Sorted sets	Supported	Full surface	remove by lex range
ZREMRANGEBYRANK	Sorted sets	Supported	Full surface	remove by rank range
ZREMRANGEBYSCORE	Sorted sets	Supported	Full surface	remove by score range
ZREVRANGE	Sorted sets	Supported	Most usage	descending range
ZREVRANGEBYLEX	Sorted sets	Supported	Full surface	descending lex range
ZREVRANGEBYSCORE	Sorted sets	Supported	Most usage	descending range by score
ZREVRANK	Sorted sets	Supported	Most usage	descending rank
ZSCORE	Sorted sets	Supported	Common	-
ZUNION	Sorted sets	Supported	Full surface	+ ZUNIONSTORE
ZUNIONSTORE	Sorted sets	Supported	Most usage	store union
XACK	Streams	Supported	Full surface	-
XADD	Streams	Supported	Full surface	-
XAUTOCLAIM	Streams	Supported	Full surface	auto-claim idle pending
XCLAIM	Streams	Supported	Full surface	claim pending messages
XDEL	Streams	Supported	Full surface	delete entries
XGROUP	Streams	Supported	Full surface	consumer-group create/destroy/setid
XINFO	Streams	Supported	Full surface	stream/groups/consumers introspection
XLEN	Streams	Supported	Full surface	-
XPENDING	Streams	Supported	Full surface	pending-entries summary
XRANGE	Streams	Supported	Full surface	-
XREAD	Streams	Supported	Full surface	-
XREADGROUP	Streams	Supported	Full surface	consumer-group read
XREVRANGE	Streams	Supported	Full surface	reverse range
XSETID	Streams	Supported	Full surface	set last-id
XTRIM	Streams	Supported	Full surface	trim to maxlen/minid
APPEND	Strings	Supported	Most usage	-
DECR	Strings	Supported	Common	-
DECRBY	Strings	Supported	Most usage	-
GET	Strings	Supported	Common	-
GETDEL	Strings	Supported	Most usage	get and delete
GETEX	Strings	Supported	Most usage	get and set expiry
GETRANGE	Strings	Supported	Most usage	-
GETSET	Strings	Supported	Common	-
INCR	Strings	Supported	Common	-
INCRBY	Strings	Supported	Common	-
INCRBYFLOAT	Strings	Supported	Most usage	-
MGET	Strings	Supported	Common	-
MSET	Strings	Supported	Common	-
MSETNX	Strings	Supported	Most usage	multi-set if none exist
PSETEX	Strings	Supported	Most usage	set with ms expiry
SET	Strings	Supported	Common	-
SETEX	Strings	Supported	Common	set with expiry
SETNX	Strings	Supported	Common	set if not exists
SETRANGE	Strings	Supported	Most usage	-
STRLEN	Strings	Supported	Most usage	-
SUBSTR	Strings	Supported	Full surface	deprecated alias of GETRANGE
Cluster mode (slot topology)	Topology	Out of scope	Most usage	a standalone instance is emitted — cluster_size is 1. Scaleway’s accepted values for a sharded cluster were deliberately not guessed: this mapping transcribes a value that constrains an apply from a live read or does not emit it at all, and measuring sharded sizes means provisioning one.
DISCARD	Transactions	Supported	Most usage	-
EXEC	Transactions	Supported	Most usage	-
MULTI	Transactions	Supported	Most usage	-
UNWATCH	Transactions	Supported	Most usage	forget all WATCHed keys
WATCH	Transactions	Supported	Most usage	optimistic lock

Install and run

The documentation and SLAs are public. Downloading and running the Cloud Adapter binary requires an entitled customer account. Set T9_API_KEY as described in Install and Authenticate, then list the adapters your account may use with this origin:

tensor9 adapt svc list \
  -origin aws::1.0.0::elasticache::valkey::serverless \
  -fmt Human

The result is limited to directed mappings for this origin that your account is entitled to use. Use a returned target identifier when configuring the adapter or investigating a request. Request binary access from [email protected] if your account does not yet include this direction.

Existing data and credentials

Selecting a backend does not copy existing data, credentials or access policies. Plan and verify migration separately before changing an application’s endpoint. Do not assume an identifier, credential or encrypted value from the origin service works unchanged on the target.

Configure, tune and debug

Start with setup and configuration. Use tuning to understand supported request tags, debugging to investigate a request, and High Fidelity Cloud Emulators to validate a bounded reproduction. For requests that go through an entitled service adapter, use tensor9 explain and x-t9-explain to inspect the selected mapping.

Tensor9 Cloud Adapter

How It Works

Getting Started

Configuration

Deployment

Support

Amazon Web Services

Google Cloud

Microsoft Azure

Making Trade-offs

Tuning

Debugging

Testing

Guides

Reference

ElastiCache Serverless (Valkey/Redis)

Supported environments

How the targets compare

Cloud Adapter

On Scaleway

Scaleway Managed Database for Redis

Install and run

Existing data and credentials

Configure, tune and debug

​Supported environments

​How the targets compare

​Cloud Adapter

​On Scaleway

​Scaleway Managed Database for Redis

​Install and run

​Existing data and credentials

​Configure, tune and debug

Supported environments

How the targets compare

Cloud Adapter

On Scaleway

Scaleway Managed Database for Redis

Install and run

Existing data and credentials

Configure, tune and debug