Angular — How To Proxy To Backend Server
Explaining how to configure a proxy for backend API calls with an example.
In the Angular app, We often talk to backend servers in the development phase, we will explore all the scenarios in this article. Here are the topics we cover.
- What is proxying
- Example Project
- proxy.config.json options
- Proxy Setup with Angular CLI
- Different Ways to configure
- Rewrite the Path URL
- Multiple app entries to one API endpoint
- Multiple app entries with multiple endpoints
- Summary
What is proxying
In general, A proxy or proxy server serves as a gateway between your app and the internet. It’s an intermediate server between client and servers by forwarding client requests to resources.
In Angular, we often use this proxying in the development environment. Angular uses webpack dev server to serve the app in development mode. If we look at the following diagram, app UI is running on port 4200 and backend server is running on port 3700. All the calls start with /api will be redirected to the backend server and rest all fall back to the…