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Understand and Build a GraphQL Federated API Gateway with Apollo and Nest

Greetings GraphQL revolutionized modern API development by addressing issues in REST through a unified interface. While GraphQL is well-suited for building monolithic services, modern applications are often complex and developed using the microservices architecture. How can we harness GraphQL to provide a unified API in a microservices application? This is where GraphQL federation comes in to solve the problem. Complete source code -  Nest GraphQL Federation Challenges faced in REST API Before delving into the GraphQL gateway, it's important to first grasp the issues associated with the REST gateway. In the example below, when we need to retrieve a book along with its author, the client must initially fetch the book and then make an additional request to obtain the author's information. Alternatively, in the case of multiple BFFs (Backend For Frontend), we would need to implement this in the API gateway. However, this would necessitate the mainten

Building a GraphQL server with Nest and Apollo

Greetings! GraphQL is rapidly gaining popularity as a more elegant solution for querying data compared to REST API. At the same time, NestJS streamlines the process of building efficient Node.js applications. In this article, I'll utilize two of them to construct a GraphQL server using NestJS. Note: I'll assume you have a basic understanding of GraphQL and NestJS. Source code -  Nest GraphQL GraphQL: A Quick Introduction GraphQL is a query language for APIs and a runtime for fulfilling those queries with your existing data. Schema: The GraphQL schema acts as a blueprint defining the data structure. It serves as the contract that establishes communication between the client and the server. Data Sources: These are the real data stores, which can be diverse, including databases, REST APIs, and more. Resolvers: Resolvers bridge the gap between the schema and data sources. They serve as the guides that tr

Getting Started with NestJS: A Beginner's Guide to Building Node.js Applications

Greetings! The Node.js ecosystem is undergoing rapid evolution, making it challenging to choose the right framework or library. The essential step is to build a solid foundation in basic JavaScript and Node.js concepts. But I'm curious about the newest trends in development hence trying NestJS. What is NestJS? Nest (NestJS) is a framework for building efficient, scalable Node.js server-side applications. Nest provides an out-of-the-box application architecture that allows developers and teams to create highly testable, scalable, loosely coupled, and easily maintainable applications. Why is it worth trying Nest shares similarities with Angular on the backend, drawing inspiration from Angular's concepts. For someone with a background in Java, like myself, it may feel reminiscent of working with the Spring framework. Getting started with Nest is straightforward and user-friendly. Apart from these points, there are some other aspects I'd like to emphasize. NestJS offe

Getting Started with AWS RDS

Greetings I was once tasked with setting up an earlier version of a database system for a demo. It took me a whole day to complete that task due to versioning issues in the required libraries. It was nothing but just pain. I lost valuable time as a developer that I can use for something more useful than struggling with setting up a database system. This is why cloud-based solutions are much better. AWS RDS provides us with many benefits over using traditional on-premises systems. OS upgrades and patching Automatic backups Replication High availability Security Multiple database options Hardware and networking So what is RDS? AWS RDS Amazon Relational Database Service (Amazon RDS) is a collection of managed services that makes it simple to set up, operate, and scale databases in the cloud. We can choose from seven popular engines. MySQL, MariaDB, PostgreSQL, Oracle, SQL Server, Aurora MySQL, and Aurora PostgreSQL. We can even deploy on-premises with RDS

Implementing email sending functionality with AWS SES

Greetings Emailing is a ubiquitous feature in modern applications that requires a reliable service to meet our email needs. Luckily, AWS Simple Email Service (SES) offers a cost-effective and secure solution. AWS Simple Email Service AWS SES is an email solution that relieves us of all operational responsibilities. It is an email platform that offers a convenient and affordable method for sending and receiving emails using your own email addresses and domains. Can I do "that"? When considering the use of such a service, we typically contemplate these functionalities. Personally, I experienced these aspects when incorporating AWS SES into our recent email feature. Sending simple emails Sending fancy HTML emails Send emails in bulk Send dynamic emails Store template somewhere Use list Use conditions Send attachments Send to multiple recipients Absolutely! SES indeed supports all of these features. Moreover, it can also be utilized for automatic