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#computer-science

3,536 posts

Circuit Breaker

MSA 에서 하나의 서비스 장애가 전체 시스템으로 전파되는 것을 Cascading Failure 라 한다. Circuit Breaker는 이를 방지하는 패턴이다. Circuit Breaker 는 원래 주식시장에서 주가가 급락할 때 시장에 미치는 충격을 완화하기 위해 매매를 일시적으로 중단하는 '비상 브레이크' 장치로 알려져있다. 엔지니어링에서는 다른 뜻으로 사용된다. 다음과 같이 MSA에서 서비스 A가 서비스 B를 호출하는 상황을 가정해보자....

2d ago3 min read

MKMingyu Kimsoobook.io

Rate Limiting

Rate Limiting은 일정 시간 내 허용되는 요청 수를 제한하는 메커니즘이다. Rate Limiting 은 특히나 대용량 트래픽을 목표로 하는 서버에서는 필수적으로 들어가는 개념이다. 서비스 가용성을 보호하기 위한 안전장치이자, 트롤링도 방지한다. 항시 대용량 트래픽이 있는 서버가 아니더라도 예상치 못한 트래픽 폭주로 비용이 폭주하거나 일시적인 장애가 생기는 것을 방지해준다. Rate Limit 을 구현하는 몇 가지 알고리즘을 살펴보자....

2d ago3 min read

PPPranoti Patilai-for-multidisciplinary-application.hashnode.dev

10. Problem Solving Agents

By seeing tis example below, Imagine you are a tourist in Romania. You are standing in the city of Arad, and you must reach Bucharest to catch your flight tomorrow morning. You can go to Sibiu, Zerind, or Timisoara — but which road will get you to B...

4d ago3 min read

DZDanny Zhengblog.hackunited.org

Is Google Play Store Really Safe?

Ah, you are looking for an app, since your phone is a bit old, you need a good QR scanner. After downloading an app with many 5-star reviews and many downloads, though, from a reputable Google Play Store, you think that you are safe. However, it is r...

4d ago2 min read

SPSneha Poojarysnehapoojary.hashnode.dev

What Happens When You Run a Python File?

Arthur C. Clarke, a British science fiction writer, futurist, and inventor, once said: “Any sufficiently advanced technology is indistinguishable from magic.” When you type: python main.py It feels instant.Like magic. But inside, a lot is happening...

4d ago2 min read

AHAnzal Husain Abidianzal.hashnode.dev

The Authentication Gap That Every AI Agent Lives In

Why existing auth was never built for autonomous agents — and how we fixed it with open-source cryptography The Uncomfortable Truth Your AI agent is authenticating like it's 2009. Every day, millions of AI agents make HTTP requests on behalf of the h...

5d ago6 min read

ASAbhishek Shivaleblog.abhishek.win

Streams In NodeJs

Have you ever heard about streams? Like senior engineers talking about how you can pipe certain streams to achieve performance gains? In this article, I will try to explain what streams actually are in Node.js and what their use cases are. Streams ar...

5d ago4 min read

SMSYED MINHAJ HUSSAINsyedminhajhussain.hashnode.dev

How a Browser Works: A Beginner-Friendly Guide to Browser Internals

Have you ever typed a URL into your browser and pressed Enter and wondered: “What actually happens behind the scenes to show me this page?” It might seem instant, but your browser goes through a series of steps to fetch, interpret, and display the we...

5d ago6 min read

SMSYED MINHAJ HUSSAINsyedminhajhussain.hashnode.dev

TCP Working: 3-Way Handshake & Reliable Communication

What Happens If Data Is Sent Without Rules? Imagine, you’ve opened Youtube & started watching a “SOCCER” game. You expect the “SOCCER” game to be streamed. But the internet itself is unreliable - packets can get lost, duplicated, or arrive out of ord...

5d ago5 min read

SMSYED MINHAJ HUSSAINsyedminhajhussain.hashnode.dev

TCP vs UDP: When to Use What, and How TCP Relates to HTTP

The Internet Needs Rules Imagine, you’re texting your friend on WhatsApp. You’ve greeted him/her “Hello”. But, he/she just received “Hell". This is what internet without rules. Messages could get lost. Could arrive out of order. Could be duplicate...

5d ago4 min read

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#computer-science

Circuit Breaker

Rate Limiting

10. Problem Solving Agents

Is Google Play Store Really Safe?

What Happens When You Run a Python File?

The Authentication Gap That Every AI Agent Lives In

Streams In NodeJs

How a Browser Works: A Beginner-Friendly Guide to Browser Internals

TCP Working: 3-Way Handshake & Reliable Communication

TCP vs UDP: When to Use What, and How TCP Relates to HTTP