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dify an open-source LLM app development platform. Dify’s intuitive interface combines AI workflow, RAG pipeline, agent capabilities, model management, observability features and more, letting you quickly go from prototype to production.

esphome ESPHome is a system to control your microcontrollers by simple yet powerful configuration files and control them remotely through Home Automation systems.

Build an 8-bit computer from scratch An 8-bit microprocessor is a type of microprocessor that processes data and executes instructions using 8-bit binary numbers. In simple terms, it means that the processor can handle data in chunks that are 8 bits wide. This tutorial walks through building a fully programmable 8-bit computer from simple logic gates on breadboards. Included are parts lists, sources, and...

A Beginner's Guide to the ESP8266 ESP8266 is just a chip name that many companies has designed their own board for it. The most interesting thing is they have Wifi so you can do a lot of IoT with it. Many of them cost just $5 for a board. Also, checkout the ESPHome project for similar thing as well.

Reverse engineering a software crack An amazing crack that doesn’t patch the original binaries. How does it works? by using

HTML attributes vs DOM properties Given a dom node object, what is the different between div.getAttribute(‘foo’) and div.foo? sometime they are same, some time they are different. why so?

How can we make pg_dump and pg_restore 5 times faster? In this blog, we’ll discuss an idea called “Parallel Snapshotting”. This idea could be integrated into Postgres upstream in the future to make pg_dump and pg_restore parallelizable at a single table level.

Exploring the Enigma of Database Vacuuming Before we discuss what VACUUM does and its implication. How data is actually stored on disk. What happens when a tuple is inserted, updated, or deleted? Understanding this will help us understand what VACUUM does, why it’s needed, and its implications.

What Is Amazon Resource Name (ARN)? In this article, you will understand ARNs and their significance within the Amazon Web Services (AWS) ecosystem. You’ll get to dissect the structure of an ARN and how you can retrieve them. By the end of this article, identifying and deciphering ARNs will be a breeze for you.

Build, notarize, and sign Golang binaries for MacOS with GitHub Actions Even it target at Go, this articule is useful for anyone want to sign binary so it can run on MacOS Catalina and later without gotting the unidentified warning.

NAND is a Turing equivalent 16-bit computer made entirely from a clock and NAND gates emulated on the web. NAND features its own CPU, machine code language, assembly language, assembler, virtual machine language, virtual machine translator, programming language, compiler, IDE, and user interface. NAND is based on the Jack-VM-Hack platform specified in the Nand to Tetris course and its associated book. You absolutely have...

autotuner a tool designed to help you tune the garbage collector of your Rails app. Autotuner integrates into Rack as a middleware and collects data from the garbage collector between requests. It will then intelligently provide suggestions to tune the garbage collector for faster bootup, warmup, and response times. Read tehe companion post too

paradedb an Elasticsearch alternative built on Postgres. We’re modernizing the features of Elasticsearch’s product suite, starting with real-time search and analytics.

pgddl Have you ever want to generatea nice “CREATE TABLE” command from an existing tbale? or “CREATE USER” for an existing user? This tool help you generate that.

Building a weather data warehouse: Loading a trillion rows of weather data into TimescaleDB Challenge of building a data warehouse. How to load a massive amount of data quickly,

Slack Journey Migrating to AWS IMDSv2 Have you ever query 169.254.169.254 you deal with AWS IDMS service. Anyone can query that from an EC2 instance. In 2019, they release IMDSv2, which require a token so it’s more secure. Slack running 60,000 AWS instance. How can they roll this out safely across the fleet of services on all these 60,000 server to use IDMSv2

validates_email_format_of Validate e-mail addreses against RFC 2822 and RFC 3696 with this Ruby on Rails plugin and gem.

go mysql server A MySQL-compatible relational database with a storage agnostic query engine. Implemented in pure Go.

Building a GPS Receiver, Part 1: Hearing Whispers I know zero thing about GPS receiver. And I may not build this after reading this article, but my knowledge indeed improve on this topic. I understand more about the technology that we use day to day