How to write a proxy API?

I want to know about how to implement a proxy API for a client library.

My case is like this: I want to write a client library for Java (the client is called from other languages) that wraps around Java's native classes (say javax.model.element.Element,etc.), and the client library communicates with another service (a database).

My question is, how should I code my library, so that I will be able to call it from other languages? I can't think of any solution that is generic for all languages. Some solution I can think of is like: JAVpackage com.company.project.library;
Import javax.util.HashMap;
Import java.IOException; public class library. }

PYTHON: class library(): def init(self): #DO SOME CODE TO CONNECT TO THE DB. JAVpackage com.IOException; }

This is not what I want because it makes no sense for me to write some extra code for Pyton, Javascript and so on. So, What should I do? It depends on the level of abstraction you are trying to achieve. Your proxy should be aware of the "client" of your library, and then you would ask the client how to reach the remote system for which you are going to provide your service.

What is an API proxy?

In a nutshell, it's a service that sits between your API server and your public domain.

It can be as simple as a static file in the root of a website that's accessible to anyone or as sophisticated as a custom server that speaks HTTP, JSON, etc.

This approach provides many benefits over the original API implementation. For one, it decouples your API server from your front end in a number of ways. The client is now independent, and you no longer have to build an API gateway because clients are often more easily maintained. Your API server can now be scaled across multiple front ends as it doesn't need to be tightly coupled to any particular client. It's also easier to secure your API because it's not directly exposed to the internet.

We'll be using an API proxy as our example. But this is actually a pretty generic concept that can be applied to many different kinds of services.

Setting Up an API Proxy. If you're using a hosting provider like Google Cloud Platform or AWS, you're probably already set up to use APIs. But, if you don't have an API server yet, setting one up is pretty easy.

You'll need an application server, like Node or PHP. The following is a basic setup for a Node API server that will provide an endpoint at /test . You can choose whatever name you like. The only important thing to know is that the URL you choose should be publicly available on the internet. If your endpoint is behind a firewall, you can open up port 80 in your firewall (or whichever port your app uses) to access your endpoint. We're now ready to use our API server. In our example, the client will still make requests to the original API server, but all requests to /test should be proxied to the new API server.

Is API Gateway an API proxy?

This appears to be a discussion of what you call API Gateways.

The question for me is whether they are the same as an API proxy, which I always thought was not.

Some of your comments indicate that a service provider does most of the work on behalf of clients rather than doing API Gateway with client calls. So the difference between the two seems to between service providers and API brokers/Gateways.

Are they the same? Do people even use the term "API Gateway" any more? An API Gateway (or Application Programming Interface or API-Proxy) mediates access between REST services. It is much like the router(s) in a networking system or the Web Proxy Cache (WPC) in a Network Load Balancer(s). When you call it via the network it may perform load-balancing, rate limiting or other operations on your behalf. It may, when possible, act as a reverse proxy for a server or cache in the "back-end". It typically only exposes the services your application accesses. There is a difference between this and an Application Layer Gateway (ALG). This is more of an authentication service that may forward to backend apps over HTTPS etc.