Category: NestJS

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API with NestJS #19. Using RabbitMQ to communicate with microservices

This entry is part 19 of 19 in the API with NestJS

NestJS subscribes to the idea that a microservice is an application that uses a different transport layer than HTTP. Therefore, in the previous part of this series, we’ve used TCP. However, with NestJS, we have a broad selection of transporters that transmit messages across microservices. Each one of them is different, and it is worth exploring […]

JavaScript NestJS TypeScript

API with NestJS #17. Offset and keyset pagination with PostgreSQL and TypeORM

This entry is part 17 of 19 in the API with NestJS

As our database grows, so do the results of our queries. Returning a lot of data in our API might not be the best approach performance-wise. Dividing our content into multiple pages and solutions like infinite scrolling have been around for quite some time. In this article, we explore ways of implementing pagination and point […]

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API with NestJS #16. Using the array data type with PostgreSQL and TypeORM

This entry is part 16 of 19 in the API with NestJS

Storing arrays is not an obvious thing in the world of SQL databases. Solutions such as MySQL, MariaDB, or Microsoft SQL Server don’t have a straightforward column type for arrays. This article explores how the array data type works in PostgreSQL both through SQL queries and through TypeORM. By learning how to operate on arrays […]

JavaScript NestJS TypeScript

API with NestJS #12. Introduction to Elasticsearch

This entry is part 12 of 19 in the API with NestJS

We can find some searching functionalities in a lot of web applications. While we might be fine when iterating through a small data set, the performance for more extensive databases can become an issue. Relational databases might prove to be relatively slow when searching through a lot of data. A solution to the above problem […]