AWS costs escalate unexpectedly due to complex pricing models, misconfigurations, and inefficient resource usage. This report provides comprehensive strategies to reduce AWS expenses while maintaining performance, focusing on data transfer optimization, resource management, and service-specific techniques.Understanding AWS Cost DriversData Transfer Expense AnalysisData transfer costs significantly impact AWS bills through inter-region, cross-AZ, and internet egress charges, contributing to overall cloud infrastructure expenses. Transfers within the same region but across availability zones inc...

Saw a GoLang pattern where a function itself implements an interface—meaning the function alone is the implementation of the interface. It took me a while to figure this out when I first encountered it, so I’m recording it here.Take server.go from the GoLang standard library as an example. The Handler interface is defined as follows:type Handler interface { ServeHTTP(ResponseWriter, *Request)}If we want to define a Handler, we would typically write:// Define a structtype MyHandler struct{}// Implement the http.Handler interface methodfunc (h MyHandler) ServeHTTP(w http.ResponseWrit...

In this article, we explore how to build an AI-driven Model Context Protocol (MCP) Agent that can help user to operate a web browser to complete tasks or generate network traffic based on human language instructions. This is achieved using the powerful browser-use library in combination with a Local/LAN configured DeepSeek LLM module service.We will Introduce step by step through setting up the Ollama DeepSeek-R1 Service in a local LAN environment, link it with the MCP Agent, and integrate with browser automation. Since the DeepSeek model runs locally, you won't have to worry about the "deepse...

This guide is to set up a workable Apache, PHP and MySQL on MacOS with Homebrew to help develop websites locally. There are other solutions available like MAMP which is similar to WAMP on Windows, this guide serves the purpose of setting up everything ourselves and know how each part works and how they work together as whole solution.1. Make Apache WorkNormally on MacOS, there is built in Apache installed and can already use. To find the Apache, can just try to run below command.brew services restart httpdBelow output can be foundStopping `httpd`... (might take a while)==> Successfully...

Previous, we have completed installation of PHP 8 with WAMP(upgrade from PHP 5 to PHP 8). That was working fine until recently we noticed that curl_init() was not working during some code migration from PHP 5 to PHP 8, by checking, we found that the curl extension was not loaded correctly though the extension was enabled in php.ini.In this post, we would show how to enable curl in PHP 8 with WAMP. The PHP version we are using is PHP 8.1.31.To enable curl in PHP 8, we need to modify php.ini file, try to search for curl in php.ini, you should confirm that the curl extension is enabled.extension=...

I’ve been working on a browser extension that saves web pages as PDFs in reader mode using jsPDF + html2canvas, providing a clean and distraction-free way to view them offline. Everything was going smoothly until I noticed a UI issue—there were no top and bottom margins at the page break area.When converting an HTML page to a PDF using html2canvas and jsPDF, the process works by first rendering the entire webpage as a canvas. html2canvas captures everything visible in the browser and converts it into an image. This image is then added to a PDF using jsPDF.addImage().However, if the...

In the previous article Deploying DeepSeek-R1 Locally with a Custom RAG Knowledge Data Base, we introduced the detail steps about deploying the DeepSeek-R1:7b locally with a customized RAG knowledge database on a desktop with RTX3060. Once the LLM deepseek-r1:7b is running on the local GPU-equipped computer, a new challenge emerges: we can only use the LLM service on the GPU computer, what if we want to use it from other devices in my LAN, is there any way I can access it from a mobile device or share this service with other computer in the same network? By default, Ollama only opens its API t...

pwru is one of the best tools for troubleshooting Linux network issues. The full name of pwru is Packet Where Are You?,How does it work?eBPF allows us to attach hooks to kernel functions. When a kernel function is executed, eBPF can define additional actions, such as recording the function and its parameters and then printing them out.When Linux starts, it generates /proc/kallsyms, a file that pwru reads to locate all functions related to skb (the data structure for network packets in the kernel). Then, pwru hooks into these functions. This allows eBPF to track the exact path a packet takes th...