Software Engineering

Advanced Filtering, Aggregation, and Sorting

Enhance your Reading Tracker API with advanced catalog features—metadata, search, filtering, sorting, and analytics. Support per-user reading progress, shelves, and statistics to deliver a polished, frontend-ready experience.

JWT

NestJS

TypeScript

See path

4 lessons

16 practices

1 hour

Server-Side Programming

Course details

Book Catalog Essentials

Preview

Observe the Book Catalog Essentials

Creating DTOs for Books Module

Extending the Mock Database with Books, Reading Sessions, and Friend Requests

Implementing Search, Sort, and Pagination for Books

Previous Course

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I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

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+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

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It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

From our community

Hear what our customers have to say about CodeSignal Learn

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.

Faith Yim

Software Engineer

+14

It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.

Alex Bush

Full Stack Engineer

I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.

Abbey Helterbran

Tech consultant

I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.

Jonathan Miller

Senior Machine Learning Engineer

+12

I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!

Francisco Aguilar Meléndez

Data Scientist

+11

Advanced Filtering, Aggregation, and Sorting

Course details

Unit 14 practices16 min

Unit 25 practices19 min

Unit 34 practices16 min

Unit 43 practices13 min

Turn screen time into skills time

Join the 1M+ learners on CodeSignal

From our community

From our community