maxking's blog

Concurrency bugs in Go

Some lessons and excerpts from the paper Understanding Real-World Concurrency Bugs in Go.

Bikeshedding

http://bikeshed.org/ What color should I paint the bike-shed?

Why did my machine reboot?

Yesterday, I was trying to debug why my server running Plex rebooted and wasn't able to figure it out. There are several new commands that I discovered, the best of which is called last. This article was really useful. whowho command prints which users

python

Improving the performance of "mailman import21"

This morning, I set out to improve the performance of "mailman import21" command. If you have used it in the past, you will know that it is slow. Until now, I never had an idea about why? Here were my ideas: Too

containers

Don't write more Dockerfiles

With containers comes container images. Yes, you don't necessarily have to, but it is nicer to isolate te filesystem too so that one can fix the packaging problem of an application and laugh at the developers of dynamic linked libraries. The most popular and

python

nonlocal statement in Python

Today, while spelunking across Python's documentation, I discovered a new statement which isn't very commonly known or used, nonlocal. Let's see what it is and what it does. nonlocal statement is pretty old and was introduced by PEP-3014 and allows a variable to re-bind

Security Implications of User Namespaces

The goal of this blog is to understand and document the security implications of user namespaces. The primary goal it serves is to perform comparison between two processes running on a Linux system as different unprivileged users in the root user namespace and an

questions

How to ask questions?

This is an awesome blog post that I often recommend anyone getting started with open-source project. It is about how to learn what is a great way to ask questions. A rule of thumb that I always reiterate whenever someone asks me a question

python

Python: default arguments in subclasses

So, I came across this when reviewing some code at my company, the interesting problem was trying to avoid duplicate default values in subclasses. Let me explain: class SuperClass: def __init__(self, arg1, arg2): pass class Subclass(SuperClass): def __init__(self, arg1, arg2='default_

mail

Setting up email forward using Amazon SES

This is a set of instructions to setup email forwarding on your servers without having to configure a mail server. Well, actually, you will have to configure a mail server. But, you won't be sending email directly from that mail server. The one we

emacs

TIL: Emacs edition

Rectangle Edit functions: https://endlessparentheses.com/new-in-emacs-25-1-better-rectangles.html?source=rss You can essentially use string-rectangle to add something in a rectangle, for example, before every line. I can also use rectangle-mark-mode to select and edit rectangle. This will be useful for me when copy-pasting

git

Useful aliases for git

Here is a list of some of the useful git aliases that I use: co = checkout count = shortlog -sn ci = commit amend = ci --amend fa = fetch --all lipush = !git review dcommit && git submit --async rb = review create --owners --no-prompt rbu = review update