JavaScript NestJS TypeScript Uncategorized
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 […]
As our application grows, maintaining it might become more challenging. One of the approaches that we can take is to structure our app with microservices. You can find the code for the microservice we create in this article in this repository. The rest of the code can still be found in the repository of our […]
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 […]
JavaScript NestJS SQL TypeScript
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 […]
As our system grows, certain queries on our database might fail us in terms of performance. One of the popular ways of dealing with this issue are indexes. This article explores how we can use them both through TypeORM and writing our own Postgres queries. Introduction to indexes When we store information on a disk, […]
Handling forms manually is not difficult in React. Keeping all of the code consistent in your project might be quite a hassle, though. There are many ways in which we can tackle the state of our forms and validation. We can expect the approach of our teammates to differ slightly. To manage our forms better, […]
With React, we have quite a few options when it comes to state management. One of the most obvious ones is using the local state. Unfortunately, it might lead to prop drilling. It happens when we pass data from one component through many layers. When some of the components along the way do not need the […]
In the third part of this series, we’ve implemented authentication with JWT, Passport, cookies, and bcrypt. It leaves quite a bit of room for improvement. In this article, we look into refresh tokens. You can find all of the code from this series in this repository Why do we need refresh tokens? So far, we’ve implemented JWT […]
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 […]
The serverless approach to building applications is getting more and more popular. It might be appealing to write and deploy code without worrying about the infrastructure underneath. Serverless computing still involves servers. The provider takes care of their maintenance entirely, though. We write event-driven functions that contain business logic. The provider charges us solely based […]