14 Open Source and Managed API Gateway for Modern Applications

14 Open Source and Managed API Gateway for Modern Applications

An API gateway is an important concept in microservices architecture. It forms an entry point for external clients(anything that is not part of the microservice system). It is a component that acts as an entry point for an application.

Let’s discuss what API Gateway is, why it is essential to have one, and how it can better manage APIs. We will also explore and list some of the best open-source and manged API gateways available in the market.

What is API Gateway?

An API gateway is an important concept in microservices architecture. It forms an entry point for external clients(anything that is not part of the microservice system). It is a component that acts as an entry point for an application.

In other words, an API gateway is an API management server that has information about endpoints. It is also capable of performing authentication, rate limiting, load balancing, and more.

To get a better picture of an API gateway, we need to know why it is essential to have an API gateway.

Why We Need API Gateway?

To understand the need for an API gateway, let’s discuss a use case of an e-commerce application.

Case Study

Consider a case study of a complex page( let’s say product page) of an e-commerce application. If we look at the below page of Amazon product listing, we can see a lot of information needed to be rendered by this specific page.

EcommerceProduct

For illustration purposes, let’s list all the microservices that we might need to render the above particular page.

Consider Search Product, Inventory, Shipping, Rating and Reviews, Recommendation Engine, Merchants, and Finance and Insurance are the different seven(7) microservices being used for rendering the above page.

P.S: Above seven(7) microservices are just an assumption to explain the API gateway concept. In reality, Amazon could have a different number of microservices.

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