Supabase Edge Functions

Using Supabase Edge Functions simple demo to show ping on NextJS /api/ Vs a Supabase Edge Function

Supabase Edge vs Next.js API

Measures client-side roundtrip time to each endpoint (no-store).

runs

Next.js /api/ping

ready

min

—

avg

—

max

—

last: —

Supabase /functions/v1/ping

ready

min

—

avg

—

max

—

last: —

Next.js results

No results yet.

Edge results

Waiting for /functions/v1/ping.

Tip: warm vs cold starts show up as “first run higher, later runs lower”. If you want, we can add a “warm-up ping” step too.

NextJS ApI endpoint looks like this:

src/app/api/ping/route.ts

import { NextResponse } from 'next/server'

export async function GET() {
  const start = performance.now()

  // Simulate minimal server work (optional)
  // await new Promise((r) => setTimeout(r, 1))

  const ms = Math.round(performance.now() - start)

  return NextResponse.json({
    ok: true,
    runtime: 'nextjs-api',
    ms,
    ts: new Date().toISOString(),
  })
}

Supabase Edge Function looks like this:

/data/supabase/supabase-joemore-dev/functions/main/index.ts

// /data/supabase/supabase-joemore-dev/functions/main/index.ts

Deno.serve(async (req) => {
  const url = new URL(req.url)

  // Health endpoint (optional)
  if (url.pathname === "/") {
    return new Response(JSON.stringify({ ok: true, service: "edge-main" }), {
      headers: { "content-type": "application/json" },
    })
  }

  // GET /ping  -> used by /functions/v1/ping
  if (url.pathname === "/ping" && req.method === "GET") {
    const start = performance.now()

    const ms = Math.round(performance.now() - start)
    return new Response(
      JSON.stringify({
        ok: true,
        runtime: "supabase-edge",
        ms,
        ts: new Date().toISOString(),
      }),
      { headers: { "content-type": "application/json" } }
    )
  }

  return new Response(JSON.stringify({ ok: false, error: "Not found", path: url.pathname }), {
    status: 404,
    headers: { "content-type": "application/json" },
  })
})

To deploy this

cd ~/Develop/ubuntu-home-server/stacks/11-supabase-stacks/joemore-dev/
docker restart  supabase-joemore-dev-functions-1

Then simply visit the endpoint: https://api-supabase.joemore.dev/functions/v1/ping