Improving Backend Application Performance - Basics

Name: Improving Backend Application Performance - Basics
Price: 27720 KRW
Rating: 4.8 (9 reviews)

This is a follow-up lecture to 'Testing Backend Application Performance', and it will lay the foundation for improving the performance of the backend application you created.

(4.8) 9 reviews

346 learners

3시간 만에 완강할 수 있는 강의 ⏰

성능측정

stress-testing

artillery

cache

performance-tuning

asynchronous-programming

Reviews from Early Learners

What you will gain after the course

API Performance Testing
Why server resources affect performance and how to improve it
Improving performance using asynchrony
How to create unique keys without duplicate checks using Snow Flakes
Improving query performance using indexes and caches

If you have done a performance test,
This time, we should try to improve performance, right?

As promised in the last performance testing lecture, we're back with a performance improvement lecture 🤗

The biggest change I've experienced since I started working in a team, as opposed to when I was developing alone, is measuring and improving performance. When I was developing applications on my own, the small number of users meant performance wasn't a major issue. However, as we process more data and traffic increases, I've realized that performance testing is essential . Even if a feature works well, poor performance can easily become a point of failure for the entire system, significantly impacting the user experience.

This lecture covers performance testing to address these issues and how to improve the API's logic accordingly . Using a shortened URL service as an example, we've prepared an easy-to-understand method for gradually improving the performance of your backend application.

First, we'll examine the basic code of the shortened URL application and deploy it to a server. We'll measure the performance of the creation and query APIs, explore potential performance improvements, and implement performance improvement methods one by one.

For the generation API, performance can be improved by increasing the number of request processing threads, increasing the server size, and separating response and generation. Learn how asynchronous processing and the snowflake algorithm can significantly improve the performance of the generation API.

To improve the performance of the query API, we'll cover methods such as adding database indexes, utilizing caches, and leveraging windowing. Through hands-on practice, you'll learn how to significantly improve query performance.

Analyze API-specific logic to derive performance improvement measures.

Eliminate duplicate URL key check logic using Snowflake

Presenting step-by-step performance improvement plans and confirming performance test results

2⃣ Reducing Latency Using Asynchrony

The performance of an application perceived by the client, the API user, is ultimately determined by latency, the time it takes for a request to be responded to. Ultimately, if the client receives a faster response for the same task, the API's performance will be perceived as better. However, if the client is not a true user but another server, this will impact the overall system performance. Let's explore performance enhancement methods that leverage asynchrony to improve this aspect.

4⃣ Improving Update Query Performance Using Windowing

When update queries targeting the same record are continuously executed, locks on the record can cause a sharp performance degradation. This is commonly referred to as a "hot spot." While there are various ways to improve performance by addressing the hot spot issue, we'll address it through windowing, which is appropriate for increasing the redirectCount of a shortened URL.

*) The content covered in the lecture is closer to batch processing, but it has the same idea as windowing. If you change it to leverage Kafka, you can easily convert it to windowing.

Player Knowledge and Precautions

We use Vultr for our cloud service, but you can also use other cloud services like AWS or GCP. However, there will be some differences, such as firewall settings, when using other cloud services. However, I believe you'll gain more by researching these issues yourself and experiencing them firsthand.
We're conducting performance testing using Artillery, which we used in our previous performance testing lecture. Performance testing using nGrinder is briefly described in the appendix.
If you have any questions while taking the course, please leave a question. I'll update the information if necessary.

Recommended for
these people

Who is this course right for?

Anyone who has taken the previous lecture, ‘Testing Backend Application Performance’
Anyone who wants to learn about widely used methods to improve API performance

Need to know before starting?

Backend application development experience
Interested in or experience with performance testing

Hello
This is

5,807

Learners

271

Reviews

116

Answers

4.9

Rating

Courses

안녕하세요.

멘토링을 하면서 주니어 개발자들이 어려워 하는 개념들에 대해 어떻게 하면 쉽게 전달할 수 있을지에 대해서 많은 고민을 하고 있는 푸(Foo)라고 합니다.

잘 부탁 드리겠습니다.

이력

2019. 08 ~ 현재 : 카카오 자바 백엔드 개발자
2021. 08 ~ 현재 : programmers 백엔드 데브코스 멘토
2021. 12 ~ 현재 : F-Lab 자바 백엔드 멘토

책

이것이 취업을 위한 백엔드 개발이다 with 자바(링크)

기타 이력 및 타 플랫폼 강의들은 아래 GitHub 링크에서 확인할 수 있습니다.

GitHub - https://github.com/lleellee0

Curriculum

All

17 lectures ∙ (2hr 39min)

Section 1. Improving Backend Application Performance - Basics

3 lectures ∙ (13min)

1. Introduction to the course
04:02
2. Brief summary of previous lecture contents
03:06
3. Practice environment
06:49

Section 2. Measuring the performance of your shortened URL service

4 lectures ∙ (55min)

4. Check your short URL application code
14:26
5. Deploy to server
20:00
6. Measuring the performance of the creation API
10:07
7. Measuring query API performance
11:19

Section 3. Improving the performance of the short URL generation API

4 lectures ∙ (35min)

8. Considering ways to improve the performance of the generation API
07:22
9. Increase the number of request processing threads
04:40
10. Increase server size
04:59
11. Separate response and production
18:35

Section 4. Improving the performance of the shortened URL lookup API

4 lectures ∙ (44min)

Section 5. supplement

2 lectures ∙ (8min)

Published:

Last updated:

Reviews

All

9 reviews

4.8

9 reviews

fain9301
Reviews 97
∙
Average Rating 4.8
5
100% enrolled
Thank you for the good lecture.
- foo
  Instructor
  You worked hard completing Won Deok-hee's lecture!
shameless84649
Reviews 1
∙
Average Rating 5.0
5
100% enrolled
I was very interested in performance improvement, so I took a lecture, and it was very helpful.
sasas
Reviews 62
∙
Average Rating 4.9
5
100% enrolled
- foo
  Instructor
  Thank you so much for leaving a review, Kyu Kyu Kyu! You worked hard to complete the entire course.
gihunkim9243
Reviews 2
∙
Average Rating 4.5
4
100% enrolled
- foo
  Instructor
  Thank you, gihun.kim, for leaving a review! You worked hard to finish the course. (_ _)
hanumoka
Reviews 60
∙
Average Rating 4.5
4
100% enrolled
I look forward to the next lecture.
- foo
  Instructor
  Thank you hanumoka for leaving a review. (_ _)

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Improving Backend Application Performance - Basics

Reviews from Early Learners

What you will gain after the course

If you have done a performance test,
This time, we should try to improve performance, right?

Analyze API-specific logic to derive performance improvement measures.

Eliminate duplicate URL key check logic using Snowflake

Presenting step-by-step performance improvement plans and confirming performance test results

Learn about these things

1⃣ How to improve performance by increasing server resources

2⃣ Reducing Latency Using Asynchrony

3⃣ Improving query performance using indexes and caches

4⃣ Improving Update Query Performance Using Windowing

Things to note before taking the course

Practice environment

Learning Materials

Player Knowledge and Precautions

Recommended for
these people

Hello
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Curriculum

Reviews

foo's other courses

Similar courses

Improving Backend Application Performance - Basics

Reviews from Early Learners

What you will gain after the course

If you have done a performance test, This time, we should try to improve performance, right?

Analyze API-specific logic to derive performance improvement measures.

Eliminate duplicate URL key check logic using Snowflake

Presenting step-by-step performance improvement plans and confirming performance test results

Learn about these things

1⃣ How to improve performance by increasing server resources

2⃣ Reducing Latency Using Asynchrony

3⃣ Improving query performance using indexes and caches

4⃣ Improving Update Query Performance Using Windowing

Things to note before taking the course

Practice environment

Learning Materials

Player Knowledge and Precautions

Recommended for these people

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If you have done a performance test,
This time, we should try to improve performance, right?

Recommended for
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Hello
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