The 9 rules of debugging

서버 자원의 효율성을 극대화하기 위해서는 흔히 비동기 프로그래밍 방식을 적용합니다. 파이썬에서도 비동기 프로그래밍 방식으로 웹서비스를 제공하기 위해서 여타 웹프레임워크 프로젝트가 탄생했습니다. Tornado부터 시작하여, Aiohttp, Sanic, Vibora 등과 같은 프로젝트가 이러한 목적을 갖고 있는 프로젝트입니다. 그 중에서도 Vibora나 Sanic 등과 같은 프로젝트는 서로 자기가 처리 능력이 좋다며 자랑하고 있습니다. 그 이유로 비동기 방식을 활용하기 때문이라고 하는데, 설명을 들여다보면 빠지지 않고 나오는 단어가 있습니다. 바로 uvloop입니다. uvloop이 무엇인지 궁금하여 알아보면, 다시 libuv라는 라이브러리를 만날 수 있습니다. 이 프로그램에서는 libuv가 어떤 방향성을 갖고 디자인되었으며, 어떤 기능을 갖고 있기에 다수의 프로젝트에서 사용하게 되었는지, 파이썬의 기본 라이브러리인 asyncio와는 어떤 차이점이 있는지를 알아봅니다. 또한 파이썬으로 만들어진 몇몇 웹프레임워크가 어떤 처리 능력을 보여주는지 직접 테스트해본 결과를 공유합니다.

Slides of my talk about Dave AGANS' book.

Logiciels

THE 9
INDISPENSABLE
DEBUGGING RULES
THOMAS PIERRAIN DAVE AGANS

UNDERSTAND THE SYSTEM
1.
“This is the first rule because it's the most important. Understand?”

2.
“It seems easy, but if you don't do it, debugging is hard.”

3.
“You can think up thousands of possible reasons for a failure.
You can see only the actual cause.”

4.
“It's hard for a bug to keep hiding when its hiding place keeps getting cut in half.”

5.
“You need some predictability in your life.
Remove the changes that didn't do what you expected.
They probably did something you didn't expect.”

6.
“Better yet, don't remember ‘Keep an Audit Trail’ Write down ‘Keep an Audit Trail ’ ”

7.
“Obvious assumptions are often wrong.
And to rub it in, assumption bugs are usually the easiest to fix.”

8.
“You need to take a break and get some coffee, anyway.”

9.
“And now that you have all these techniques, there's no excuse for leaving it unfixed.”

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