IoT Gateway Supporting Communication with Web Servers

IoT Gateway Supporting Communication with Web Servers

Overview With the development of the Internet of Things (IoT), more and more devices need to connect to the cloud. These devices include various instruments, industrial equipment, collection devices, and sensors, most of which use serial ports (RS232, RS485). Therefore, IoT gateways such as serial-to-TCP and serial-to-WiFi can be used to transmit data to the … Read more

In-Depth PHP Debugging with GDB

In-Depth PHP Debugging with GDB

Author: bobyzhang, Tencent IEG Operations Development Engineer There is a debug mode when compiling PHP, which disables memory optimization, alerts for memory leaks, and disables call stack optimization to allow us to see the complete PHP C-level call stack. Typically, I compile two versions of PHP (one normal and one with debug) in different directories, … Read more

How to Use Encryption Algorithms to Protect Sensitive Data

How to Use Encryption Algorithms to Protect Sensitive Data

Encryption is the process of converting plaintext into ciphertext using algorithms to prevent unauthorized access. Encryption is divided into two types: 1. Symmetric Key Encryption 2. Asymmetric Encryption (Public Key Encryption) How Encryption Algorithms Work An encryption algorithm is a mathematical function that converts plaintext into ciphertext, typically using a key to perform encryption and … Read more