All repositoriesAMZN / Cloud reliability

Queue Commons.

Simulate retries, duplicate deliveries and idempotency for token community notifications. Reproduce every run with a seeded random source and inspect the dead-letter queue.

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INSIDE THE REPOSITORY

A complete place to start.

Seeded failure simulation
Bounded retry and dead-letter accounting
Idempotency ledger
Exact token contract and pair inspection
Bounded ERC-20 transfer activity explorer
Local community funding scenario planner
Evidence export with SHA-256 verification
Nine automated checks and GitHub CI
MIT license, method, architecture and API docs

Node.js 22No runtime dependenciesVercel ready

Run locally

npm test
npm start

Open localhost:3000. The technology runs with no API key. Live chain and DNS reads use public providers.

Deploy in your account

Extract the archive and upload its contents to a GitHub repository you control. Import that repository into Vercel, or run npx vercel --prod in the extracted folder. The included configuration sets the output directory and tests.

Return to the Deploy studio to publish your project, token pair and repository on the public build board.

29 SOURCE FILES / V1.0.0

Inspect everything.

.env.example.github/workflows/check.yml.gitignoreLICENSEREADME.mdSECURITY.mdapi/activity.mjsapi/dns.mjsapi/health.mjsapi/token.mjsdev.mjsdocs/API.mddocs/ARCHITECTURE.mddocs/METHOD.mdexamples/inputs.jsonpackage.jsonpublic/app.mjspublic/config.mjspublic/core/engine.mjspublic/core/math.mjspublic/favicon.svgpublic/index.htmlpublic/styles.cssserver/api.mjsserver/handler.mjstests/api.test.mjstests/engine.test.mjstools/verify-evidence.mjsvercel.json

This download contains only this standalone project. It includes no account credentials.

METHOD

What it calculates.

Each message receives up to the selected attempts. Successful deliveries can be duplicated; a message-id set suppresses duplicate side effects.

LIMITS

What the evidence means.

A discrete experiment, not AWS telemetry, load testing or production delivery guarantees.

The funding planner does not transfer tokens or route rewards. Deploying this repository does not imply company endorsement or investment value.

Inputs you control.

Input	Type	Units
Messages	Bounded number	—
Failure probability	Bounded number	—
Duplicate probability	Bounded number	—
Maximum attempts	Bounded number	—
Random seed	Bounded number	—