System Architecture

A name–value pair, also called an attribute–value pair, key–value pair, or field–value pair, is a fundamental data representation in computing systems and applications. Designers often desire an open-ended data structure that allows for future extension without modifying existing code or data. In such situations, all or part of the data model may be expressed as a collection of 2-tuples in the form with each element being an attribute–value pair. Depending on the particular application and the implementation chosen by programmers, attribute names may or may not be unique.

An attribute–value system is a basic knowledge representation framework comprising a table with columns designating "attributes" (also known as "properties", "predicates", "features", "dimensions", "characteristics", "fields", "headers" or "independent variables" depending on the context) and "rows" designating "objects" (also known as "entities", "instances", "exemplars", "elements", "records" or "dependent variables"). Each table cell therefore designates the value (also known as "state") of a particular attribute of a particular object.

W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.

Become a better full stack developer. A newsletter dedicated to web development and software architecture.

A load balancer with inline SAML minimizes disruption, uses existing infrastructure and provides a solid foundation for enhancing organizational security posture.

Arista’s Etherlink technology will be supported across a range of products, including 800G systems and line cards, and will be compatible with specifications from the Ultra Ethernet Consortium.

In dynamic resource allocations and load balancing, one of the well-known and fascinating algorithms is the “power of two random choices”

It’s no secret I am a big fan of the “power of two random choices” algorithm (or more generally best-of-k) for resource based load…

My apologies if you speak the Queen’s English since that title probably has a whole different meaning to you than I intended. In fact, I’m talking about Git, the version control system.…

Whether you want some quick and dirty data storage, or simply don’t have that heavy requirements for your local database system, SQLite is always a good choice. With its portable single-file …

It is funny how exotic computer technology eventually either fails or becomes commonplace. At one time, having more than one user on a computer at once was high tech, for example. Then there are th…

In this article we explore how to combine a large language model (LLM) with a relational database to allow users to ask questions about their data in a natural way. It demonstrates a Retrieval-Augmented Generation (RAG) system built with Go that utilizes PostgreSQL and pgvector for data storage and retrieval. The provided code showcases the core functionalities. This is an overview of how the

In a relational database, foreign keys are normally used to associate records stored in different tables, but wouldn’t it be nice to define relationships dynamically without having to add extra columns or tables? And while we’re at it, how about having sparse relationships by associating a record directly with any other record like “post X was last edited by user #123” or “post X was flagged for review by user #456” (who happens to be a moderator)?

Intercept any updates to system state and route some of them to a new component

New HTTP/2 Vulnerability Poses Severe Threat to Server Availability

You might think you understand the concept of BadUSB attacks and know how to defend it, because all you’ve seen is opening a terminal window. Turns out there’s still more attack surface…

List of resources to start with Software Language Engineering: the science and tools behind the creation and processing of languages.

Commissioned: The network edge is on its way to becoming the location where data is created faster than ever before, and where application innovation is

Until recently, Wasm’s reality didn’t live up to the hype. Preview 2 is the missing link that Wasm needed to become viable for production use cases.

A big question mark is how to protect our data, especially how to move it and access it as we want, not just being stuck on one cloud provider.

Credit card rewards are mostly funded out of interchange, a fee paid by businesses to accept cards.

In machine learning and AI, vector embeddings are a way to represent complex data, such as words, sentences, or even images as points in a vector space, using vectors of real numbers.

At the end of the day, the digital circuitry in an FPGA chip are analog circuits. When they are operating within their bounds, they properly behave like ideal digital circuits. Usually you want you…

In the past few years we’ve seen the rise of low-power mesh networking devices for everything from IoT devices, weather stations, and even off-grid communications networks. These radio module…

On The Vergecast: bye-bye QWERTY, AI at Microsoft, and two thumbs up on Netflix.

Git is optimized to work with large numbers of small files, like text files. This alone makes Git impractical for managing such datasets.