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Agent skill

AWS Cloudformation Elasticache

by giuseppe-trisciuoglio in giuseppe-trisciuoglio/developer-kit

Provides AWS CloudFormation patterns for ElastiCache Redis or Memcached infrastructure, including subnet groups, parameter groups, security controls, and cross-stack outputs.

MITAuto-check: notesDatabases

Install AWS Cloudformation Elasticache

skills CLI
$ npx skills add giuseppe-trisciuoglio/developer-kit --skill aws-cloudformation-elasticache -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install giuseppe-trisciuoglio/developer-kit aws-cloudformation-elasticache --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/giuseppe-trisciuoglio/developer-kit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/developer-kit-aws/skills/aws-cloudformation/aws-cloudformation-elasticache .claude/skills/aws-cloudformation-elasticache && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
aws-cloudformation-elasticache
GitHub stars
357
Token cost
~1.5k tokens
SKILL.md length
548 words
Files
3 (incl. references)
Skills in repo
115
Repo updated
First seen
Licence
MIT

At a glance

Provides AWS CloudFormation patterns for ElastiCache Redis or Memcached infrastructure, including subnet groups, parameter groups, security controls, and cross-stack outputs.

  • Works in 5 steps: Choose the cache topology first → Model the network boundary explicitly → Configure durability and security based… → …
  • Designing cache tiers
  • SKILL.md covers Overview, When to Use, Instructions and Examples, plus 4 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

AWS Cloudformation Elasticache is an agent skill from giuseppe-trisciuoglio/developer-kit. Provides AWS CloudFormation patterns for ElastiCache Redis or Memcached infrastructure, including subnet groups, parameter groups, security controls, and cross-stack outputs. Use when designing cache tiers, high-availability replication groups, encryption settings, or reusable CloudFormation templates for application caching.

Its SKILL.md is about 1.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/examples.md` and `references/reference.md`).

It sits in Databases, covering Infrastructure as code, Backup and disaster recovery and Database administration. It works with AWS CloudFormation and Redis. The repository describes itself as: Modular plugin marketplace for Claude Code and agentic CLIs, with validated, spec-driven skills, agents, commands, and workflows for Java, TypeScript, Python, PHP, AWS, and AI. The licence is MIT.

When your agent uses it

  • Designing cache tiers
  • High-availability replication groups
  • Encryption settings
  • Reusable CloudFormation templates for application caching

Example prompts

  • “Use the aws-cloudformation-elasticache skill to provide AWS CloudFormation patterns for ElastiCache Redis or Memcached infrastructure, including…”
  • “/aws-cloudformation-elasticache”

Requirements

  • Pre-approved tools (allowed-tools): Read, Write, Bash

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Choose the cache topology first
  2. Model the network boundary explicitly
  3. Configure durability and security based on environment
  4. Add reusable parameters and outputs
  5. Validate the stack change before rollout

What it can do on your machine

Read from SKILL.md and the folder at commit fe73fb3. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write
    • Bash

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are yaml).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

AWS Cloudformation Elasticache loads about 1.5k tokens when it runs, and up to ~14k if it reads all its reference files. Until then it costs about 90 tokens; SKILL.md has 548 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~90
When it runs · the whole SKILL.md, loaded when a task matches
~1.5k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~14k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Read, Write, Bash

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from giuseppe-trisciuoglio/developer-kit at commit fe73fb3, republished under its MIT licence (© giuseppe-trisciuoglio). 548 words, ~1,488 tokens.

Download SKILL.mdSave it as .claude/skills/aws-cloudformation-elasticache/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
aws-cloudformation-elasticache
description
Provides AWS CloudFormation patterns for ElastiCache Redis or Memcached infrastructure, including subnet groups, parameter groups, security controls, and cross-stack outputs. Use when designing cache tiers, high-availability replication groups, encryption settings, or reusable CloudFormation templates for application caching.
allowed-tools
Read, Write, Bash

AWS CloudFormation ElastiCache

Overview

Use this skill to model ElastiCache infrastructure with CloudFormation without turning SKILL.md into a full service manual.

Focus on the delivery decisions that matter most:

  • choosing the right cache topology
  • placing the cache safely inside a VPC
  • configuring availability, encryption, and exports for downstream stacks

Use the bundled references/ documents for larger production templates and service-specific detail.

When to Use

Use this skill when:

  • creating a Redis or Memcached cache tier with CloudFormation
  • deciding between AWS::ElastiCache::CacheCluster and AWS::ElastiCache::ReplicationGroup
  • configuring subnet groups, parameter groups, and security groups for application access
  • adding snapshots, maintenance windows, encryption, and Multi-AZ behavior
  • exporting cache endpoints to application or platform stacks
  • reviewing cache changes for replacement risk, downtime, or operational cost

Typical trigger phrases include cloudformation elasticache, redis replication group, memcached cluster, cache subnet group, and export redis endpoint.

Instructions

1. Choose the cache topology first

Use:

  • ReplicationGroup for production Redis-style deployments that need failover, replicas, or sharding
  • CacheCluster for Memcached or simple single-node cache scenarios

Do not start with resource YAML before deciding whether the application needs durability, read replicas, cluster mode, or just an ephemeral cache.

2. Model the network boundary explicitly

Create and wire:

  • a subnet group with private application subnets
  • a security group that allows access only from the application tier
  • parameter groups only when default engine settings are insufficient

Keep the cache private unless there is a very unusual and well-reviewed reason not to.

3. Configure durability and security based on environment

For production-style Redis deployments, decide on:

  • automatic failover and Multi-AZ
  • at-rest and in-transit encryption
  • snapshot retention and maintenance windows
  • authentication or auth token strategy where supported

For lower environments, document when a cheaper single-node configuration is acceptable.

4. Add reusable parameters and outputs

Parameterize only the settings that truly vary between environments, such as node type, subnet IDs, or snapshot retention.

Export outputs that other stacks need, typically:

  • primary or configuration endpoint
  • reader endpoint when applicable
  • security group or subnet group identifiers only if downstream stacks genuinely depend on them
Show full SKILL.md (213 more words)Show less
5. Validate the stack change before rollout

Before deployment:

  • run template validation
  • inspect whether changes replace the cluster or replication group
  • review security group exposure and encryption settings
  • confirm maintenance, backup, and scaling choices match the application's recovery expectations

Examples

Example 1: Redis replication group with private networking
yaml
Parameters:
  CacheNodeType:
    Type: String
    Default: cache.t4g.small

Resources:
  CacheSubnetGroup:
    Type: AWS::ElastiCache::SubnetGroup
    Properties:
      Description: Private subnets for the cache tier
      SubnetIds: !Ref PrivateSubnetIds

  CacheSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Application access to Redis
      VpcId: !Ref VpcId

  RedisReplicationGroup:
    Type: AWS::ElastiCache::ReplicationGroup
    Properties:
      ReplicationGroupDescription: Application Redis cluster
      Engine: redis
      CacheNodeType: !Ref CacheNodeType
      NumNodeGroups: 1
      ReplicasPerNodeGroup: 1
      AutomaticFailoverEnabled: true
      MultiAZEnabled: true
      CacheSubnetGroupName: !Ref CacheSubnetGroup
      SecurityGroupIds:
        - !Ref CacheSecurityGroup
      TransitEncryptionEnabled: true
      AtRestEncryptionEnabled: true
Example 2: Export an endpoint for another stack
yaml
Outputs:
  RedisPrimaryEndpoint:
    Description: Primary endpoint used by the application stack
    Value: !GetAtt RedisReplicationGroup.PrimaryEndPoint.Address
    Export:
      Name: !Sub "${AWS::StackName}-RedisPrimaryEndpoint"

Keep outputs small and stable so consumer stacks do not break unnecessarily.

Best Practices

  • Prefer replication groups over single-node Redis for production systems.
  • Put caches in private subnets and restrict ingress to known application security groups.
  • Turn on encryption and snapshots unless there is a documented reason not to.
  • Review replacement risk before changing engine version, cluster mode, or subnet design.
  • Use parameters for environment-specific sizing, not for every possible knob.
  • Keep deep template variants in references/examples.md instead of expanding the root skill endlessly.

Constraints and Warnings

  • Some ElastiCache changes cause replacement or data loss if applied carelessly.
  • NAT, subnet, and routing mistakes can make the cache unreachable even when the stack succeeds.
  • Multi-AZ, replicas, and larger node types can change cost significantly.
  • Cache endpoints, encryption support, and auth features vary by engine and version.
  • Snapshot and maintenance windows must align with the application's recovery and deployment practices.

References

  • references/examples.md
  • references/reference.md
  • aws-cloudformation-vpc
  • aws-cloudformation-security
  • aws-cloudformation-ecs
  • aws-cloudformation-lambda

© giuseppe-trisciuoglio, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (references) in plugins/developer-kit-aws/skills/aws-cloudformation/aws-cloudformation-elasticache of giuseppe-trisciuoglio/developer-kit.

  • SKILL.md
  • references/examples.md
  • references/reference.md

Open the folder on GitHubat commit fe73fb3

Compare with similar skills

AWS Cloudformation Elasticache next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

AWS Cloudformation Elasticache compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
AWS Cloudformation Elasticache this skillgiuseppe-trisciuoglio/developer-kit357—~1.5kAutomated safety check: NotesMIT
Amazon Elasticacheaws/agent-toolkit-for-aws2.8k—~4.5kAutomated safety check: PassApache-2.0
Redis Connectionsredis/agent-skills1661 repos~1.3kAutomated safety check: PassMIT
Redis Inspectorevolution-foundation/evo-nexus545—~1.3kAutomated safety check: NotesCustom licence
Supercheck Infrastructure Deploymentsupercheck-io/supercheck215—~1.4kAutomated safety check: NotesAGPL-3.0
Azure Resource Manager Redis Dotnetmicrosoft/skills3.1k5 repos~3kAutomated safety check: PassMIT

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Works with

Categories

Questions about AWS Cloudformation Elasticache

What does AWS Cloudformation Elasticache do?

Provides AWS CloudFormation patterns for ElastiCache Redis or Memcached infrastructure, including subnet groups, parameter groups, security controls, and cross-stack outputs. AWS Cloudformation Elasticache is an agent skill from giuseppe-trisciuoglio/developer-kit. Provides AWS CloudFormation patterns for ElastiCache Redis or Memcached infrastructure, including subnet groups, parameter groups, security controls, and cross-stack outputs.

When should I use AWS Cloudformation Elasticache?

AWS Cloudformation Elasticache fits situations like: designing cache tiers; high-availability replication groups; encryption settings; reusable CloudFormation templates for application caching.

How do I install AWS Cloudformation Elasticache in Claude Code?

Run `npx skills add giuseppe-trisciuoglio/developer-kit --skill aws-cloudformation-elasticache -a claude-code`. Or copy the skill folder (plugins/developer-kit-aws/skills/aws-cloudformation/aws-cloudformation-elasticache in giuseppe-trisciuoglio/developer-kit) into .claude/skills/aws-cloudformation-elasticache in your project. Claude Code loads it when a task matches its description.

How do I install AWS Cloudformation Elasticache in Codex?

Run `npx skills add giuseppe-trisciuoglio/developer-kit --skill aws-cloudformation-elasticache -a codex`. Or copy the skill folder (plugins/developer-kit-aws/skills/aws-cloudformation/aws-cloudformation-elasticache in giuseppe-trisciuoglio/developer-kit) into .agents/skills/aws-cloudformation-elasticache in your project. Codex loads it when a task matches its description.

Can I use AWS Cloudformation Elasticache in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add giuseppe-trisciuoglio/developer-kit --skill aws-cloudformation-elasticache -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/aws-cloudformation-elasticache, .gemini/skills/aws-cloudformation-elasticache, .github/skills/aws-cloudformation-elasticache and .opencode/skills/aws-cloudformation-elasticache in your project.

What does AWS Cloudformation Elasticache need to run?

SKILL.md names no scripts, command-line tools or credentials: AWS Cloudformation Elasticache is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Bash.

Does AWS Cloudformation Elasticache access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is AWS Cloudformation Elasticache safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does AWS Cloudformation Elasticache use?

AWS Cloudformation Elasticache is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does AWS Cloudformation Elasticache use?

About 1.5k tokens (SKILL.md is roughly 6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 12k tokens, read only when the agent opens those files.

What are the alternatives to AWS Cloudformation Elasticache?

Skills that share tags, products or a category with AWS Cloudformation Elasticache: Amazon Elasticache (aws/agent-toolkit-for-aws, 2.8k stars), Redis Connections (redis/agent-skills, 166 stars), Redis Inspector (evolution-foundation/evo-nexus, 545 stars) and Supercheck Infrastructure Deployment (supercheck-io/supercheck, 215 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains AWS Cloudformation Elasticache?

giuseppe-trisciuoglio (a GitHub user) maintains it in giuseppe-trisciuoglio/developer-kit, which has 357 GitHub stars. The repository holds 115 skills in this directory. The repository was last updated on September 10, 2026.

Source: giuseppe-trisciuoglio/developer-kit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.