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David Cao

David is a Cloud & DevOps Enthusiast. He has years of experience as a Linux engineer. He had working experience in AMD, EMC. He likes Linux, Python, bash, and more. He is a technical blogger and a Software Engineer. He enjoys sharing his learning and contributing to open-source.

In today’s world of game development, creating an interactive and engaging game has never been easier, thanks to AI-powered tools like Claude. As an AI language model, Claude can assist you in various aspects of game development, from brainstorming ideas to writing the actual game code. In this article, I will walk you through how …

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Introducing Gemini Live, the latest feature in the Gemini app that brings a more natural and interactive way to have voice-based conversations with Gemini. Whether you’re brainstorming creative ideas, preparing for an important presentation, or just exploring new topics, Gemini Live offers real-time, spoken responses, transforming the way you interact with AI. Available now on …

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In PostgreSQL, managing access privileges is an essential part of database administration, especially in multi-user environments. One of the most useful commands for viewing and managing access privileges for database objects (such as tables, views, sequences, etc.) is the \dp command, which is available in the psql command-line interface. This command provides a detailed view …

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In PostgreSQL, logical replication allows for selective replication of database objects like tables, allowing changes in one database to be replicated to another in real-time. One important feature in logical replication is the concept of replica identity, which defines how PostgreSQL tracks and identifies rows for replication, especially when handling DELETE operations. In this article, …

Read More about Understanding PostgreSQL’s REPLICA IDENTITY FULL for Logical Replication

As artificial intelligence (AI) continues to evolve, one of the most groundbreaking advancements in natural language processing (NLP) has been the development of ChatGPT by OpenAI. This AI model, based on the GPT (Generative Pre-trained Transformer) architecture, has become a popular tool for a wide range of applications—from casual conversation to complex problem-solving. However, as …

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In recent years, AI-powered tools have revolutionized the world of content creation. One of the most exciting and versatile technologies in this space is ChatGPT, developed by OpenAI. Leveraging advanced natural language processing (NLP), ChatGPT can generate human-like text based on a wide range of inputs. Whether you are a content writer, marketer, or business …

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In PostgreSQL, replication mechanisms—whether physical or logical—rely heavily on the Write-Ahead Logging (WAL) system. WAL serves as a fundamental component to ensure data consistency, durability, and to support replication processes. This article explains how WAL works in PostgreSQL, including its role in replication, file management, and system recovery. What is Write-Ahead Logging (WAL)? Write-Ahead Logging …

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In PostgreSQL, the Write-Ahead Log (WAL) is a critical part of ensuring data durability and consistency. WAL files store all changes made to the database, and they are used for replication, point-in-time recovery (PITR), and crash recovery. Understanding how to find the current WAL file and how to switch to a new WAL file can …

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Introduction PostgreSQL is a robust, open-source relational database management system that offers advanced features for data storage, processing, and retrieval. One of the key components of PostgreSQL’s security model is the GRANT statement. This statement allows database administrators to control access to database objects like tables, views, sequences, and functions by assigning specific privileges to …

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PostgreSQL is a powerful and widely-used open-source relational database management system (RDBMS) known for its robustness, scalability, and performance. At its core, PostgreSQL uses Multiversion Concurrency Control (MVCC), a technique that allows multiple transactions to occur simultaneously without interfering with each other. While MVCC enhances database performance by enabling high concurrency, it also creates a …

Read More about A Comprehensive Guide to PostgreSQL VACUUM: Boosting Performance and Reclaiming Space