System Architecture

In the history of computing, there has been an endless push and pull between the need for general-purpose versus fine-tuned custom systems and software. While general purpose will, by nature, prevail on leadership-class HPC, the work done in meticulous world of ASIC design, system and software optimization filters into architectural thinking eventually. In the case

This series is all about infrastructure: the invisible layer of wires and guts and light that makes everything run. It’s not in the best shape, but what would it take to make it better?

This specification defines standard HTTP headers and a value format to propagate context information that enables distributed tracing scenarios. The specification standardizes how context information is sent and modified between services. Context information uniquely identifies individual requests in a distributed system and also defines a means to add and propagate provider-specific context information.

A study of Google's code review tooling (Critique), AI-powered improvements, and recent statistics

This article explores the transition from a WebSocket-based implementation to a simpler, more direct stream over HTTP in the context of capturing touch screen inputs on Linux. It begins by introducing the main theme, encapsulated in the statement Everything is a file is a stream of byte. The need to capture finger positions on a touchscreen by reading /dev/input/events in Linux is initially discussed, followed by a dilemma of transferring this data to a JavaScript client in a browser. Initially, WebSockets are chosen, leading to a discussion on how frameworks often shape our technological choices and the challenges faced in debugging WebSocket connections. The article then introduces an alternative about sending a stream of bytes over HTTP, drawing a parallel to Linux’s approach to handling devices and files. Serialization, the process of encoding messages for this stream, is discussed next, highlighting the implementation specifics in GoLang and its native advantages. The final section covers how to receive and decode this stream in JavaScript within a worker thread, and then send the decoded messages to the main thread using post requests. The article concludes by reflecting on the benefits of simplicity in technology, urging readers to reevaluate default choices and consider more straightforward solutions to complex problems.

The Edwards-curve Digital Signature Algorithm (EdDSA) You've heard of EdDSA right? The shiny and new signature scheme (well new, it's been here since 2008, wake up). Since its inception, EdDSA has evolved quite a lot, and some amount of standardization process has happened to it. It's even doomed to be adopted by the NIST in FIPS 186-5! First, some definition: EdDSA stands for Edwards-curve Digit ...

#26: And How Online Maps Work Explained Like You’re Twelve (5 minutes)

Ceramics-based storage medium consumes very little energy and lasts more than 5,000 years, creators say

A SQL Like query language to perform queries on .git files.

Not all non-sequential primary keys are created equal, the ULID format is a fantastic substitute for the typical UUIDv4 choice.

Server makers Dell, Hewlett Packard Enterprise, and Lenovo, who are the three largest original manufacturers of systems in the world, ranked in that order, are adding to the spectrum of interconnects they offer to their enterprise customers. And when we say that, we really do mean spectrum, and specially we mean the combination of Spectrum-4

Attendees at the Amazon Web Services’ re:Invent conference, well under way in Las Vegas this week, were encouraged […]

Fast Opensource Kubernetes Serverless Framework

The finite-state-machine Reference Manual, version 1.0.0.

TLDR: A demo speaks louder than a thousand words. You can connect to a URL sandbox created by me and my team via browserling.com/browse. We run browsers in virtual machines and stream them to you as a video. This way, you can open suspicious URLs in a sandboxed environment without risking the security of your own...

CheerpJ is a WebAssembly-based JVM that runs fully client side in the browser. It supports Java applications, legacy applets and libraries, with no need for compilation, server backends, plugins, or post-processing steps. CheerpJ 3.0 introduces a completely new JIT-based architecture which makes the tool faster, more usable and much more powerful.

SPONSORED FEATURE: The face of modern networking is changing dramatically in parallel with the exponential increase in the volume of data traffic over the last several years. Enterprises and cloud service providers alike are struggling to handle that transmission workload, whilst simultaneously trying to contain costs. It’s a tall order to deliver enough capacity and

What is OpenID Connect OpenID Connect is an interoperable authentication protocol based on the OAuth 2.0 framework of specifications (IETF RFC 6749 and 6750). It simplifies the way to verify the identity of users based on the authentication performed by an Authorization Server and to obtain user profile information in an interoperable and REST-like manner.OpenID

by Aditya Mavlankar, Zhi Li, Lukáš Krasula and Christos Bampis

Border Gateway Protocol and Generic Routing Encapsulation allow rerouting of traffic to scrubbing centers where harmful data is filtered out.

WARNING for Raspberry Pi 5 NAS users: **If you use btrfs to set up a Raspberry Pi 5 as a NAS, your filesystem will not be mountable from almost all other machines unless you use `mkfs.btrfs -s 4096`**. The Raspberry Pi 5 uses 16K pages by default, and as of today this is the default block size for mkfs.btrfs upstream on such systems. **btrfs does not support mounting 16K block size filesystems on x86 machines, or any machine with a 4K page size**. We knew this was going to be a problem for Asahi Linux (which also uses 16K pages), so Fedora ARM64 has long carried a patch to change the default to 4K. Unfortunately, even though we submitted it upstream a long time ago, the btrfs-progs maintainers have chosen not to apply it at this time. If you format a btrfs filesystem on a Raspberry Pi 5 normally, it will work, but you will be setting yourself up for a terrible disaster recovery scenario: If the Pi ever stops working, you will have to *find another one* (or an Apple Silicon laptop) to gain access to your data again - and no replacing/upgrading the Pi with any other machine (except a Mac) without a full disk reformat.

Active measurements over the public Internet can target either collaborating parties or non-collaborating ones. Sometimes these measurements, also called "probes", are viewed as unwelcome or aggressive. This document suggests some simple techniques for a source to identify its probes. This allows any party or organization to understand what an unsolicited probe packet is, what its purpose is, and, most importantly, who to contact. The technique relies on offline analysis of the probe; therefore, it does not require any change in the data or control plane. It has been designed mainly for layer 3 measurements.