10 Common Mistakes Developers Make When Using Vercel (And How to Avoid Them)

As developers, we often find ourselves tangled up in deployment issues that can derail our projects. If you’re using Vercel, a popular platform for deploying web applications, you might run into some common pitfalls that can lead to frustration and wasted time. Having worked with Vercel extensively, I’ve seen firsthand the challenges that come up, and I want to help you avoid them. Here’s a breakdown of ten common mistakes developers make when using Vercel and how to steer clear of them.

1. Ignoring Environment Variables

What It Is:

Environment variables are essential for managing configurations and secrets in your applications.

Common Mistake:

Many developers forget to set up their environment variables in Vercel, leading to runtime errors.

How to Avoid:

Always define your environment variables in the Vercel dashboard under "Settings" > "Environment Variables" before deploying.

Our Take:

We learned the hard way that forgetting to set these can lead to a lot of wasted debugging time.

2. Not Utilizing the Vercel CLI

What It Is:

The Vercel CLI allows you to deploy, manage, and preview your applications from the command line.

Common Mistake:

Developers often rely solely on the dashboard and miss out on the efficiency of the CLI.

How to Avoid:

Familiarize yourself with the Vercel CLI. Deploying via the command line can save you time and provide better error messages.

Our Take:

We use the CLI for quick deployments; it’s a game-changer for our workflow.

3. Misconfiguring Build Settings

What It Is:

Build settings determine how your application compiles and serves your code.

Common Mistake:

Incorrect settings can lead to failed deployments or misbehaving applications.

How to Avoid:

Review your build settings carefully and test them locally before deploying.

Our Take:

We once deployed with incorrect build commands, which caused a major headache. Double-checking can save you a lot of trouble.

4. Overlooking Deployment Previews

What It Is:

Deployment previews allow you to see how changes will look before they go live.

Common Mistake:

Skipping previews can lead to unintended changes affecting your live site.

How to Avoid:

Always use deployment previews for PRs. It’s a simple way to catch issues early.

Our Take:

This practice has saved us from embarrassing mistakes on launch day.

5. Failing to Optimize Assets

What It Is:

Optimizing images and other assets can significantly improve load times.

Common Mistake:

Developers often forget to optimize images before deploying.

How to Avoid:

Use tools like ImageOptim or TinyPNG to compress images before upload. Vercel also offers built-in optimizations for certain file types.

Our Take:

We’ve seen performance boosts just by optimizing our images. It’s worth the extra step.

6. Not Using Caching Effectively

What It Is:

Caching can speed up your application by storing frequently accessed data.

Common Mistake:

Failing to set appropriate caching headers can lead to slow response times.

How to Avoid:

Configure caching rules in your vercel.json file to enhance performance.

Our Take:

We didn’t utilize caching properly at first, but once we did, our app’s speed improved dramatically.

7. Ignoring Logs for Troubleshooting

What It Is:

Vercel provides logs that can help you troubleshoot issues in your application.

Common Mistake:

Developers often overlook logs, leading to unresolved issues.

How to Avoid:

Regularly check your logs in the Vercel dashboard, especially after deployment.

Our Take:

Logs have been crucial for us in diagnosing issues quickly.

8. Not Leveraging Serverless Functions

What It Is:

Vercel’s serverless functions allow you to run backend code without managing a server.

Common Mistake:

Some developers stick to traditional APIs instead of using serverless functions.

How to Avoid:

Explore using serverless functions for handling API requests; they can simplify your architecture.

Our Take:

We’ve transitioned many of our backend tasks to serverless functions and have seen improved scalability.

9. Forgetting to Set Up Custom Domains

What It Is:

Custom domains enhance branding and user experience.

Common Mistake:

Developers often deploy without configuring custom domains, leading to generic URLs.

How to Avoid:

Set up your custom domain in the Vercel dashboard under "Domains" once your app is ready.

Our Take:

Having a custom domain is a must for credibility; don’t skip this step.

10. Not Keeping Dependencies Updated

What It Is:

Keeping your dependencies up-to-date ensures security and performance.

Common Mistake:

Neglecting updates can lead to security vulnerabilities and compatibility issues.

How to Avoid:

Regularly check for updates and run npm outdated to keep your dependencies in check.

Our Take:

We’ve faced issues from outdated packages; maintaining them is essential for stability.

Conclusion

To wrap it up, deploying with Vercel can be seamless if you avoid these common mistakes. Start by setting up your environment variables correctly, utilizing the Vercel CLI, and taking advantage of deployment previews. Regularly check your logs and keep your dependencies updated to ensure a smooth experience.

Start Here: If you’re new to Vercel, take the time to familiarize yourself with these practices. They’ll save you headaches down the road and ensure your deployments are successful.