~betterdevlink | Bookmarks (211)

How to Send a SWIFT Wire From Scratch SWIFT is the most widely used international payment method in the world. In this tutorial we will be going over how to send a SWIFT wire programatically to your bank, what information you might need about your recipient to allow the payment to clear successfully, and the software you might need to do so. The following...

Tuning PostgreSQL parameters in Amazon RDS Tailor towards AWS RDS but it’s good and generic guide to cover many PostgreSQL tuning parameters

pgmonitor-extension This extension provides a means to collect metrics within a PostgreSQL database to be used by an external collection source (Prometheus exporter, Icinga/Nagios scraper, etc). Read the announcing post from CrunchyData

pgstream an open source Change-Data-Capture(CDC) command-line tool and library that offers Postgres replication support with DDL changes to any provided output. Once you have a stram of change happen to your data, it can solve many use case. Example, implement webhooks

WatchYourLAN Lightweight network IP scanner. Can be used to notify about new hosts and monitor host online/offline history

A collaborative IPv6 book The intention is a practical introduction to IPv6 for technical people, kept up to date by active practitioners.

How SSH Secures Your Connection If you’ve ever remotely connected to any UNIX-like server, you have likely used SSH, short for “Secure Shell”. SSH provides, as the name implies, secure shell access to remote machines and is used pretty much everywhere. But what exactly does “secure” mean here, and how is this security provided by the protocol? This post will take a look at...

The Design & Implementation of the CPython Virtual Machine For every bytecode compiled language, the most interesting part of its implementation is its virtual machine. Even if you are not a compiler engineer, learning about such internal implementation can give you new performance tricks and insights that you may be able to use in other places of your job.

The web's clipboard, and how it stores data of different types Have you ever notice when you copy the html text, sometime the format is kepted as well, such as table and font style? How does that kind of data is serialized and pass between the applications.

Programming ZKPs: From Zero to Hero Imagine you want to prove that you have a key to a room? You don’t need to show me the key. But if I look through the window, and see you’re inside. I know you have the key. How can we apply that kind of process into programming to prove it?

Dealing with rejection (in distributed systems) Backpressure is one of the most important practical details that every good distributed system has to get right if it’s going to stand a chance at survival in production. Without a good backpressuring system, a small increase in load or an errant client can easily knock over the entire system and leave it stuck in a death spiral...

Easy to Overlook PostgreSQL Performance Issues in Rails Apps It says Rails app in the title but it can be applied to app like Django or any kind of ORM and it abstracts you away from thinking and optimize your db. Example,

netlink package provides a simple netlink library for go. Netlink is the interface a user-space program in linux uses to communicate with the kernel. It can be used to add and remove interfaces, set ip addresses and routes, and configure ipsec.

LitServe is an easy-to-use, flexible serving engine for AI models built on FastAPI. Features like batching, streaming, and GPU autoscaling eliminate the need to rebuild a FastAPI server per model.

Calendar.js A javascript drag & drop event calendar, that is fully responsive and compatible with all modern browsers. These kind of project you may not need it right now but come in handy when you need it at a later time

How Postgres stores data on disk – this one's a page turner databases are basically magic, and SQL is the arcane tongue that allows you to channel that magic. In fact, it’s easy to think of databases like a black box where you make sure your tables are indexed sensibly and your queries aren’t doing anything silly, and the rest just happens. But at...

Ethernet History Deepdive – Why Do We Have Different Frame Types? Take us into the history of Ethernet to see why things happened the way they did. It will also significantly enhance your network knowledge.

Build your own SQLite, Part 1: Listing tables As developers, we use databases all the time. But how do they work? In this series, we’ll try to answer that question by building our own SQLite-compatible database from scratch.Source code examples will be provided in Rust, but you are encouraged to follow along using your language of choice, as we won’t be relying on many...

Linux Pipes are Slow Some programs use a particular system call “vmsplice” to move data faster through a pipe. When not using vmsplice, Linux pipes are slower than what I would have expected. Since we cannot always use it, lets see exactly why that was, and whether it could be improved.