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Quickstart

Get Gopherstack running locally in under two minutes and start using it as an AWS endpoint.

Prerequisites

  • AWS CLI v2 — for interacting with the mock services
  • Go 1.21+ (for go install) or a pre-built binary (see below)
  • Docker (optional, required for Lambda image-based functions only)

Installation

Option 1 — go install

go install github.com/blackbirdworks/gopherstack@latest

Option 2 — Pre-built binary

Download the latest release for your platform from GitHub Releases:

# Linux / macOS (amd64)
curl -sSfL https://github.com/blackbirdworks/gopherstack/releases/latest/download/gopherstack_linux_amd64.tar.gz | tar xz
chmod +x gopherstack && mv gopherstack /usr/local/bin/

# macOS (Apple Silicon)
curl -sSfL https://github.com/blackbirdworks/gopherstack/releases/latest/download/gopherstack_darwin_arm64.tar.gz | tar xz
chmod +x gopherstack && mv gopherstack /usr/local/bin/

Option 3 — Docker

docker run --rm -p 8000:8000 ghcr.io/blackbirdworks/gopherstack:latest

See docker.md for a full Docker Compose setup.

Start the server

gopherstack
# INFO starting server addr=:8000 region=us-east-1

The server is ready when you see the startup log. It listens on port 8000 by default.

# Verify it is running
gopherstack health
# OK

First commands with the AWS CLI

Gopherstack speaks the native AWS wire protocol — no SDK changes needed, just point the CLI at http://localhost:8000.

# S3
aws --endpoint-url http://localhost:8000 s3 mb s3://my-bucket
aws --endpoint-url http://localhost:8000 s3 cp README.md s3://my-bucket/
aws --endpoint-url http://localhost:8000 s3 ls s3://my-bucket/

# SQS
aws --endpoint-url http://localhost:8000 sqs create-queue --queue-name my-queue
aws --endpoint-url http://localhost:8000 sqs send-message \
    --queue-url http://localhost:8000/000000000000/my-queue \
    --message-body "hello"

# DynamoDB
aws --endpoint-url http://localhost:8000 dynamodb create-table \
    --table-name Users \
    --attribute-definitions AttributeName=UserId,AttributeType=S \
    --key-schema AttributeName=UserId,KeyType=HASH \
    --billing-mode PAY_PER_REQUEST

# STS (always returns the mock account)
aws --endpoint-url http://localhost:8000 sts get-caller-identity

Skip typing --endpoint-url with awsgs

Install the awsgs wrapper to avoid repeating --endpoint-url on every command:

go install github.com/blackbirdworks/gopherstack/cmd/awsgs@latest

Then replace aws with awsgs:

awsgs s3 mb s3://my-bucket
awsgs sqs create-queue --queue-name my-queue
awsgs dynamodb list-tables

awsgs injects --endpoint-url http://localhost:8000 automatically. Override the port with --awsgs-port or AWSGS_PORT:

awsgs --awsgs-port 9000 s3 ls
AWSGS_PORT=9000 awsgs dynamodb list-tables

Using AWS environment variables

AWS CLI uses AWS_ENDPOINT_URL (v2.13+) as a global endpoint override — no wrapper needed:

export AWS_ENDPOINT_URL=http://localhost:8000
export AWS_ACCESS_KEY_ID=test
export AWS_SECRET_ACCESS_KEY=test
export AWS_DEFAULT_REGION=us-east-1

aws s3 ls
aws dynamodb list-tables

Dashboard

A web dashboard is available at http://localhost:8000/dashboard for browsing S3 buckets, DynamoDB tables, queues, and service metrics.

Configuration reference

All options can be set as CLI flags or environment variables:

Flag Env Var Default Description
--port PORT 8000 HTTP server port
--region REGION us-east-1 Default AWS region
--account-id ACCOUNT_ID 000000000000 Mock AWS account ID
--log-level LOG_LEVEL info Log level (debug, info, warn, error)
--persist PERSIST false Enable snapshot persistence across restarts
--data-dir GOPHERSTACK_DATA_DIR ~/.gopherstack/data Persistence data directory
--demo DEMO false Load demo data on startup
--latency-ms LATENCY_MS 0 Inject random latency per request (ms)
--elasticache-engine ELASTICACHE_ENGINE embedded ElastiCache engine: embedded, stub, docker
--opensearch-engine OPENSEARCH_ENGINE stub OpenSearch engine: stub, docker
--dns-addr DNS_ADDR `` Enable embedded DNS on this address (e.g. :10053)
--dns-resolve-ip DNS_RESOLVE_IP 127.0.0.1 IP synthetic hostnames resolve to

Persistence

Start with --persist (or PERSIST=true) to save state across restarts:

gopherstack --persist

State is saved to ~/.gopherstack/data/ on macOS/Linux or /data/ in container environments. A debounced snapshot is taken 500 ms after each mutation.

Next steps