Issues #167 Aug 31, 2020 (22)

WebRTC for the Curious This book was created by WebRTC implementers to share their hard-earned knowledge with the world. WebRTC for the curious is an Open Source book written for those that are always looking for more. This book doesn’t settle for abstraction.

The Internet explained from first principles Dig into lower level knowledge of networks: protocols, mesh networks, route tables and more. Basically it helps to level up your network knowledge if you have done web development for a long time and want to know more about network.

Tuning Postgresql AutoVacuum In many PostgreSQL databases, you never have to think or worry about tuning autovacuum. It runs automatically in the background and cleans up without getting in your way. But sometimes the default configuration is not good enough, and you have to tune autovacuum to make it work properly. This article presents some typical problem scenarios and describes what to do in...

How to turn an ordinary gzip archive into a database This article demonstrates how specially crafted but ordinary gzip archives can be used as a database like storage. The ideal is to sort the source files then gzip. When everything is combined, the complete search system takes less than 0.3 seconds to search in the 1TB of compressed data. It also introduces a Python...

Constant Time LFU A common strategy to make any system super-performant is Caching. Eventually the cache memory grows and we need to evict data to reclaim memory. Two algorithms to pick what to evict is LFU and LRU. In this essay, we take a look at Constant Time LFU implementation based on the paper An O(1) algorithm for implementing the LFU cache eviction scheme...

The log/event processing pipeline you can't have Thoughts on design/implementation of a log pipeline system which aims to be simple and cheap. To quote the author: You can probably find, somewhere, something similar to each of the components I’m going to talk about, but you probably can’t find a single solution that combines it all with good performance and super-low latency for a reasonable...

Hands-on WebAssembly: Try the basics Get started with WebAssembly through a simple hands-on tutorial that assumes only general knowledge in web development. The only tools you’ll need to get a taste of Wasm through runnable code examples are a code editor, any modern browser, and a Docker container with toolchains for C and Rust that comes with the article.

Why are true and false so large? true and false are built-in shell function, but apparently, we have true and false as binary executable files in /usr/bin. Their jobs are just to exit with code 0 or 1. So the billion dollar question: why they are big?

Scaling services with Shard Manager Facebook built Shard Manager as a generic platform that facilitates efficient development and operation of reliable sharded applications, instead of each app/team manage their own way of sharding.

Inventing Monads Monads are being used all the time to deal with nil or error. But it’s hard to explain them. It’s easy to say this or that is monads but to ELI5 is a hard job. This is another attempt. Ruby safe navigator &. or Rust’s ? or examples of Monads. Another old read on Monad is You Could Have Invented Monads! (And...

pg-shortkey This installs a trigger and type which allow you to use YouTube-like short IDs (e.g. 1TNhBqYo-6Q) as Postgres Primary Keys. Just like the YouTube IDs, SHORTKEY IDs are fixed length and URL-safe

asciimatics A cross platform package to do curses-like operations, plus higher level APIs and widgets to create text UIs and ASCII art animations

racecar a friendly and easy-to-approach Kafka consumer framework. It allows you to write small applications that process messages stored in Kafka topics while optionally integrating with your Rails model

ts-migrate a tool for helping migrate code to TypeScript. It takes a JavaScript, or a partial TypeScript, project in and gives a compiling TypeScript project out.

maddy an email server support send and receive message via SMTP, IMAP. It aims to replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC and more with one daemon with uniform configuration and minimal maintenance cost.

infracost Get cost hourly and monthly estimates for a Terraform project. It also support github action and an companion post