Cloudflare Workers Demo — Cheat Sheet

~10–15 min · Walk every tab → end at the live site · "Italic quotes" = phrases, your words are better · ▶ = action

0. Open (~1 min)

Tab 1. Overview

▶ You're already on the Overview tab — the dustins-hub Worker

a) Deployment URL bar (top)

b) Architecture diagram (middle)

c) Metrics summary (Last 24 hours)

d) Request Distribution map (bottom)

e) Domains & Routes panel (right side)

Edit Code (~3 min)

▶ Click Edit Code top right → open index.js

if (request.method === "POST") { ... }

const formData = await request.formData();
const email = formData.get("email");

await fetch("https://api.resend.com/emails", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${env.RESEND_API_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    from: "onboarding@resend.dev",
    to: "dustinburke23nc@gmail.com",
    subject: "New Lead from Worker",
    text: `New signup: ${email}`
  })
});

→ Click back arrow / breadcrumb to return to the Worker overview.

Tab 2. Metrics

▶ Click the Metrics tab

• Total requests over time
• Error rate
• CPU time — P50 vs. P99 latency
• Subrequests — outbound calls the Worker made (to the email service, e.g.)

Tab 3. Deployments

▶ Click the Deployments tab

• List of past deployments with timestamps
• Current active version (marked)
• Rollback button on any prior version

Tab 4. Bindings

▶ Click the Bindings tab

Examples I could add:

• D1 — serverless SQLite database, if I wanted to store every lead
• KV — key-value store, for caching or feature flags
• R2 — file storage with no egress fees, for backups or uploads
• Workers AI — run an LLM directly from the Worker
• Service binding — call another Worker without going over the public internet

Tab 5. Observability

▶ Click the Observability tab

• The live log stream (or a Begin log stream button)
• Filters for status code, method, path
• Any console.log output from the code

Do this:

1. Start the log stream
2. Switch to the live site tab, submit the form
3. Come back — the request appears here within a second

Tab 6. Settings

▶ Click the Settings tab

Variables and Secrets (the vault)

▶ Scroll to / click Variables and Secrets

• RESEND_API_KEY entry
• Type column — Secret
• Value column — hidden

Triggers

▶ Scroll to / click Triggers (or Domains & Routes)

Other Settings

The Payoff — Watch it Work End-to-End (~3 min)

Close (~1 min)

Quick Answers — back-pocket