System Architecture

For better or worse, C is the lingua franca in the world of kernel engineering. The core logic of the Linux kernel is written entirely in C (with a bit of assembly), as are its drivers and modules. While C is rightfully celebrated for its powerful yet simple semantics, it is an older language that lacks many of the features present in modern languages such as Rust. The BPF subsystem, on the other hand, provides a programming environment that allows engineers to write programs that can run safely in kernel space. At the 2022 Linux Plumbers Conference in Dublin, Ireland, Alexei Starovoitov presented an overview of how BPF has evolved over the years to provide a new model for kernel programming.

In this installment of “Ask Adam,” Adam Savage answers two very important questions: When should you bother to refurb a tool vs. buying a new one and does he get sad when he has to repl…

Open Source resource for learning Data Structures & Algorithms and their implementation in any Programming Language

A hash tree or Merkle tree is a tree in which every non-leaf node is labelled with the hash of the labels or values (in case of leaves) of its child nodes. Hash trees are useful because they allow efficient and secure verification of the contents of large data structures. Hash trees are used in the IPFS file system, BitTorrent protocol, Git, Bitcoin, Ethereum, and a number of NoSQL systems like Apache Cassandra and Riak. They are used for many kinds of verification, especially of large chunks of data.

Performing I/O concurrently is one of asyncio's superpowers (if not its main superpower). This is accomplished, directly or indirectly (through helpers like asyncio.gather), by the creation and use of asyncio tasks. Even if you've never created an asyncio task yourself or called gather, you've used them because every

Zeek (formerly Bro) is the world’s leading platform for network security monitoring. Flexible, open source, and powered by defenders.

What is Bro IDS (Zeek)? Thinking about Bro as an IDS alone doesn’t accurately describe the breadth of its capabilities. Let's break down a more effective description.

Build applications that respond immediately to real-time events, seamlessly using existing Kafka infrastructure to deploy stream processing with just a few SQL statements.

This article provides you with a stepwise guide to effectively use KSQL for Real-Time Data Streaming using Apache Kafka for your business.

AtlanticWave: It’s finally happening. Dan Magorian, MAX Director of Engineering and Operations [email protected]. Here’s what we told everyone 18 months ago about what A-Wave would be, still true today:. A-Wave is an International Peering Fabric US, Canada, Europe, South America

Implementation of ARIN's Lame DNS Delegation Policy. Edward Lewis Research Engineer ARIN [email protected]. Abstract. The membership of ARIN has approved a policy to curb lame delegations The staff is implementing it and has already seen a reduction

Don't use actors for concurrency. Instead, use actors for state and use futures for concurrency. A common practice I've seen in scala code is to use actors for concurrency. This is encouraged by Akka and a lot of writing about Scala, the documentation of which is highly actor-centric. I assert …

Chainguard takes a new approach to building a container Linux with all the security you'd need already baked in.

Solutions with preinstalled open source Kubernetes management platforms can simplify the deployment and management of complex container environments at scale.

When computer architectures change in the datacenter, the attack always comes from the bottom. And after more than a decade of sustained struggle, Arm Ltd

Photo by Gabe Pierce on Unsplash China’s new rule: if your car uses sensors to map the environment, you must apply for government permit (link). Car sensors are now so good and ubiquitous the…

There are thousands of algorithms that have had a huge influence on the world. Here are some of the algorithms that act as the heartbeat of the world we occupy.

A good Kubernetes setup makes the life of developers a lot easier and gives them time to focus on delivering business value. In this article, I will share the most important things you need to run a Kubernetes stack in production.

Articles in this series Part I. Iterative Servers Part II. Forking Servers Part III. Pre-forking Servers Part IV. Threaded Servers Part V. Pre-threaded Servers Part VI: poll-based server Part VII: epoll-based server On HackerNews There are several interesting takeaways from the HackerNews thread for this article series. Do check it out. Web apps are the… Continue reading Linux Applications Performance: Introduction

This article is a part of a series on io_uring Series introduction Part 1: Introduction to io_uring. In this article we create cat_uring based on the raw io_uring interface and cat_liburing, built on the higher level liburing. Part 2: Queuing multiple operations: We develop a file copying program, cp_liburing leveraging multiple requests with io_uring. Part… Continue reading io_uring By Example: Part 3 – A Web Server with io_uring

OWASP SECURITY LABELING SYSTEM PROJECT READ THE LABEL!