Author: Peng Zhao (Founder of Zhici Fang, Co-founder and Partner of Yunhe Capital) Original from IoT Think Tank Despite the wave of digital transformation sweeping the industrial sector for over a decade, most factory systems remain at the stage of “automation rather than intelligence.” Although sensors, PLCs, MES, cloud platforms, and other components are all … Read more
đź“šBest Practices for Ansible Core – (13) Comprehensive Analysis of Playbook Keywords🚀 🚀 Unlock the Secret Weapon of Ansible Playbook: Keywords!đź“ť 🌟 Here comes the popular science notes!Want to write concise, efficient, and elegant Ansible Playbooks? This comprehensive note will help you master Playbook keywords in one go! From play to task, from variables to … Read more
Osprey Talks Microcontrollers • Source: Osprey Talks Microcontrollers The nRF5 SDK has updated the event callback mechanism starting from version 14, introducing the Observer Pattern to decouple different BLE layers from the callback functions for BLE events. This mechanism utilizes Flash sections, combining function calls in RAM with operations in Flash, which is a novel … Read more
In the rapidly developing Internet of Things (IoT) landscape, the LoRaWAN gateway serves as a critical hub connecting numerous low-power wide-area network devices to data centers. Its performance and reliability directly impact the operational efficiency and stability of the entire IoT system. So, how can one select an excellent product among the many LoRaWAN gateways … Read more
“Requests allows us to elegantly send requests synchronously, while aiohttp opens the door to the asynchronous world.” 🧠What is aiohttp? <span>aiohttp</span> is the most popular asynchronous HTTP client and server framework in Python, built on top of <span>asyncio</span>. It performs excellently in scenarios involving high concurrency requests, real-time communication, and microservice interfaces. You can … Read more
Introduction whttpserver is a simple HTTP server, similar to <span>python -m http.server</span>, but adds file upload and editing capabilities, thus solving the confusion of its inability to upload files. It can even start the server using the <span>whttpserver</span> command. Why This Tool is Needed Many company services are now accessed through jump servers, making it … Read more
Scenario Recreation: A Frustrating JSON Parsing Issue Recently, during a project integration process, our team encountered a bizarre JSON parsing issue. Here’s what happened: The frontend team copied a normal cURL request from Chrome Developer Tools: curl -X POST https://api.ourcompany.com/v1/orders \ -H "Content-Type: application/json" \ -H "Content-Length: 187" \ -d '{"order_id":"123456","products":[{"sku":"A001","qty":2}],"remark":"Weekend Delivery"}' This request worked … Read more
In website construction, the choice of URL needs to be considered from multiple perspectives including security, SEO, and user experience. Here are specific recommendations: 1. HTTP VS HTTPS It is strongly recommended to choose HTTPS for the following reasons: – Security: HTTPS encrypts data transmission through SSL/TLS, preventing information from being stolen or tampered with … Read more
Hello everyone, today I want to introduce a particularly powerful Python library – mitmproxy! It is an intercepting proxy tool that supports HTTP/HTTPS, allowing us to easily monitor and modify network requests. Whether for web scraping or API testing, it can save us a lot of trouble. I have been using it for several years, … Read more
ngx_http_limit_req_module The ngx_http_limit_req_module module limits the request processing rate based on the defined key value, particularly for rate limiting requests from a single IP. limit_req_zone Directive Sets up a shared memory zone to store state information and the number of exceeded requests based on the key; the key can include text, variables, or a combination … Read more