MemoryDB with a Real ACL, Not open-access
Durable Redis-compatible storage with an ACL holding real users, authenticated through IAM. MemoryDB ships an ACL named open-access that accepts any connection reaching the port with no credentials; this module will not use it.
Verification
Static-verifiedPassed: validated and lint-clean (provider-schema-validated for AWS/Azure/GCP; Terraform-language lint elsewhere).
Conformance
- Static validation (fmt · validate · tflint)
- Security scan clean (Checkov)
- Plan tests (mocked: validation rules · outputs)
Provenance
- SHA-256 checksum
- Signature (pending)
Functional
- Live test pending (no cloud run yet)
Last verified 2026-09-12 · how we verify
Use it from the registry
terraform · opentofumodule "memorydb" {
source = "www.iac-bazaar.com/iac-bazaar/aws-memorydb/aws"
version = "1.0.0"
}Needs a registry token from /account/tokens. The module itself is free; the account is what identifies you. Full setup: registry docs.
Cite it in your README
badge · attributionPaste this beside the module in the repository that uses it. The badge is rendered from this artifact's verification record, so it reads static-verified because the record says so, and the link lands on this page.
[](https://www.iac-bazaar.com/catalog/aws-memorydb?utm_source=syndication&utm_medium=readme&utm_campaign=artifact)
Terraform module 1.0.0, static-verified on IaC Bazaar: [MemoryDB with a Real ACL, Not open-access](https://www.iac-bazaar.com/catalog/aws-memorydb?utm_source=syndication&utm_medium=readme&utm_campaign=artifact)
```hcl
module "memorydb" {
source = "www.iac-bazaar.com/iac-bazaar/aws-memorydb/aws"
version = "1.0.0"
}
```Preview:
Inputs & outputs
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Documentation
aws-memorydb
An Amazon MemoryDB cluster with a real ACL, its users, subnet group and
parameter group. Works with Terraform and OpenTofu (>= 1.6), AWS provider
>= 6.0, < 7.0.
Why MemoryDB rather than ElastiCache. ElastiCache replicates asynchronously, so a failover can drop writes the client was already told had succeeded. MemoryDB commits every write to a multi-availability-zone transaction log before acknowledging it. That durability is the whole reason to pay the difference - which is why this module defaults to a replica per shard and requires two subnets.
The ACL is the part people get wrong. MemoryDB ships an ACL named
open-access, and a cluster pointed at it accepts any connection reaching the
port with no credentials at all. This module will not use it. It creates an
ACL holding real users and authenticates them through IAM by default, so no
password is written into the state file and rotation does not mean editing
infrastructure code.
Other defaults worth knowing:
tls_enabledis hard-coded on, not a variable. Encryption in transit is settable only at creation, so a cluster created without it stays without itsnapshot_retention_daysis 7. AWS defaults it to 0, which leaves point-in-time recovery with no points- A precondition asks you to confirm
num_replicas_per_shard = 0: the log keeps the data, but a lost node is an outage until AWS rebuilds it - Each
access_stringis validated to start withon. A user whose rule starts withoffis created successfully and cannot connect - The example rules are narrow (
~app:*,+@read +@write) rather than~* +@all
Verification
Static validation runs tofu fmt, init, validate, tflint and checkov.
This module has not yet had a live test, so it is published as statically
validated with its live test pending and does not carry the live-tested mark.
Usage code & full reference need an account
The complete copy-paste usage, the full input/output reference, and operational notes are free with an account - shown here and bundled in the download. Sign in and this section fills in.
- Usage
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