IaC Bazaar
AWSLive-tested

ElastiCache for Redis / Valkey

A cluster-mode-disabled ElastiCache Redis/Valkey cache with encryption at rest and in transit both on, no public exposure, and the subnet group and security group created for you.

terraformAWS#aws

Part of: AWS Production Landing Zone

aws-elasticache-redisterraform v1.7

Verification

Live-tested

Really deployed to a cloud sandbox, verified against its outputs and assertions, then destroyed - with the teardown confirmed.

Conformance

  • Static validation (fmt · validate · tflint)
  • Security scan clean (Checkov)
  • Plan test superseded by live test

Provenance

Functional

  • Live-tested - applied, verified, destroyed

Last verified 2026-06-30 · how we verify

Verify this download

cosign · sha-256

Don't take our word for it. Every release is signed with cosign - check the bytes against our pinned public key before you trust them.

# 1. Our pinned public key - fetch once, trust out-of-band
curl -O https://www.iac-bazaar.com/cosign.pub

# 2. This module's Sigstore bundle
curl -o aws-elasticache-redis-1.0.0.sigstore.json \
  https://www.iac-bazaar.com/api/artifacts/aws-elasticache-redis/signature

# 3. Verify the tarball you downloaded
cosign verify-blob \
  --key cosign.pub \
  --bundle aws-elasticache-redis-1.0.0.sigstore.json \
  aws-elasticache-redis-1.0.0.tar.gz
# → Verified OK

# 4. (optional) confirm the checksum too
echo "e8d988b12b946eecf5bd97ee73773915adce54392cc21c995b5e85054c382ec9  aws-elasticache-redis-1.0.0.tar.gz" | sha256sum -c
Signature bundlePublic keyMachine-readable receiptHow we verify

Use it from the registry

terraform · opentofu
module "elasticache_redis" {
  source  = "www.iac-bazaar.com/iac-bazaar/aws-elasticache-redis/aws"
  version = "1.0.0"
}

Paid module — needs a purchase (or a subscription that covers it) plus a registry token from /account/tokens. Full setup: registry docs.

Inputs & outputs

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Documentation

aws-elasticache-redis

Amazon ElastiCache for Redis / Valkey, cluster mode disabled (a single primary with optional read replicas). Works with Terraform and OpenTofu (>= 1.6), AWS provider >= 6.0, < 7.0. Secure by default and self-contained: encryption at rest and in transit are both on, the cache is never publicly reachable, and the networking pieces (subnet group + security group) are created for you — falling back to the account's default VPC so a minimal cache applies with just a name.

Secure defaults:

  • Encryption at rest on (at_rest_encryption_enabled = true); use a customer-managed key via kms_key_id, otherwise the AWS-managed ElastiCache key
  • Encryption in transit (TLS) on (transit_encryption_enabled = true); optional auth_token adds Redis AUTH on top (the token is never an output)
  • No public exposure — access is via a module-created security group that opens the cache port only to allowed_cidrs / allowed_security_group_ids (no ingress at all by default)
  • Automatic minor version upgrades on, to pick up security patches
  • Footgun guards (plan-time preconditions): Multi-AZ implies automatic failover, automatic failover implies num_cache_clusters >= 2, auth_token implies TLS, kms_key_id implies at-rest encryption

Cost note: the default cache.t4g.micro single node is the cheapest option (~$0.016/hr). HA (replicas + automatic_failover_enabled + multi_az_enabled) is off by default — opt in for production.

Security notes

  • Clients must speak TLS while transit_encryption_enabled is on. Add an auth_token for password auth; the token is supplied via TF_VAR_auth_token or a secrets manager and is never exposed as an output.
  • Keep allowed_cidrs / allowed_security_group_ids as tight as possible — prefer granting an application security group over a CIDR range.
  • For real deployments pin subnet_ids to private subnets instead of relying on the default-VPC fallback.

Requirements

  • Terraform or OpenTofu >= 1.6
  • hashicorp/aws >= 6.0, < 7.0

License

Commercial — IaC Bazaar EULA. © IaC Bazaar. Original work (not derived from a third-party module).

Usage code & full reference unlock after purchase

The complete copy-paste usage, the full input/output reference, and operational notes ship with your licence - shown here and bundled in the download.

  • Usage
  • Inputs
  • Outputs

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