A basic question about TCP
I have a very basic computer networking question: when sending a TCP packet, is the packet ACK’ed at every node in the route between the s ender and the recipient, or just by the final recipient?
Type systems and logic
An important result in computer science and type theory is that a type system corresponds to a particular logic system.
A type is interpreted as a proposition, and a value is interpreted as a proof of the proposition corresponding to its type. Most standard logical connectives can be derived from this idea
Debugging the Postgres query planner
We at GoCardless believe that failure can be a great learning opportunity, and nothing proves that more than the amount we’ve learned from Postgres issues. This post shares a specific issue we encountered that helped us level-up our understanding of the Postgres query planner.
Diving into Merkle Trees
Introduced in 1979 by Ralph C. Merkle in his Thesis: Secrecy, Authentications, and Public Key Systems, the Merkle Tree, also known as a binary hash tree, is a data structure used for efficiently summarizing and verifying the integrity of large sets of data enabling users to verify the authenticity of their received response
Modern Microprocessors A 90-Minute Guide
A brief, pulls-no-punches, fast-paced introduction to the main design aspects of modern processor microarchitecture. This article is meant to be informal and fun! We will discuss: pipelining, multi-core and simultaneous multi-threading, SIMD vector instructions and caches and the memory hierarchy.
Real world advice for writing maintainable Go programs
Code to read
🐺 φεγγάρι - The Lua VM written in JS ES6 for Node and the browser
💨A real time messaging server to build a scalable in-app notifications, multiplayer games, chat apps in web and mobile apps
🚅 Beautiful Python prompts made simple. Build a prompt like stacking blocks
a lightweight Rails engine that brings an admin panel for managing configuration settings on a live Rails app
Find files (ff) by name, fast!
PostgreSQL backup and restore service
Archival and Restoration for Postgres
Backup and Recovery Manager for PostgreSQL
cds bvy ovh
an Enterprise-Grade Continuous Delivery & DevOps Automation Platform
A multitenant, horizontally scalable Prometheus as a Service
Really cheap Kubernetes cluster on AWS with kubeadm
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