How Does NTP Work?
NTP is a protocol intended to synchronize all computers participating in the network to within a few milliseconds of Coordinated Universal Time (UTC). The core of the protocol is NTP’s clock discipline algorithm that adjusts the local computer’s clock time and tick frequency in response to an external source.
How To Write a Computer Emulator
CPU, RAM, register, stack, heap. what they are? Writing a computer emulator really helps us understand at the end of the day it’s just data in - data out in computer world
Kubernetes at Home With K3s
Almost after a few years working, we will ended up with a few old laptops, maybe building a Kubernetes from those old laptop
It is always the DNS
DNS just works most of the time mean that the protocol itself has to coverlots of edge case
Upgrading MySQL at Shopify
Shopify was running Percona Server 5.7.21 and want to go to MySQL 5.7.32. and eventually MySQL 8.0
In this post, They shared how the Database Platform team performed the upgrade. Roadblocks during rollback testing, the internal tooling, and guidelines for approaching upgrades going forward.
PostgreSQL 14 Database Monitoring and Logging Enhancements
Some key enhancements in PostgreSQL 14 that you should made use: Query Identifier is used to identify the query, which can be cross-referenced between extensions. You can enable these very quick without much risk.
It also improves the logging of auto-vacuum and auto-analyze. Now we can see the I/O timings in the log, showing how much has been spent reading and writing
Code to read
A REPL for x86-64 assembly language by tenderlove, a prominent contributor to the Ruby eco system
the fastest JSON serializer for Ruby, JRuby, and TruffleRuby
A decentralized cryptocurrency written in Python for educational purpose
a comprehensive PDF processing library from the ground up written in Go. Some useful example is when signing a PDF document, we need to calculate position of signature element to put a DOM overlay element on it to allow user sign it.
⚡ fast dns proxy that can run anywhere, built to black-hole internet advertisements and malware servers
A multi-platform HTTP(S) Reverse Shell Server and Client in Python
Help you create tooltips style on DOM element. Position all types of floating elements with full control. Tooltips, popovers, dropdowns, menus, and more.
Kuby is a convention-over-configuration approach to deploying Rails apps. It makes the power of Docker and Kubernetes accessible to the average Rails developer without requiring a devops black belt.
Content aware image resize library
A self hosted virtual browser that runs in docker and uses WebRTC.
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