Vercel Load & Scale

Overview

Load test Vercel deployments to identify scaling limits, cold start impact, and concurrency thresholds. Covers k6/autocannon test scripts, Vercel's auto-scaling model, Fluid Compute concurrency, and capacity planning.

Prerequisites

• Load testing tool: k6, autocannon, or artillery
• Test environment deployment (never load test production without approval)
• Access to Vercel Analytics for monitoring during tests

Instructions

Step 1: Understand Vercel's Scaling Model

Vercel serverless functions scale automatically: