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First impression of Github Copilot

It has been some time since I heard about the new generation of AI powered coding assistant -- Github Copilot. Don't get chance to experience it until obtained the tech preview access recently. So this post will document some first impression while using it. For now, this tool is only supported in VSCode and it can support various different programming languages. To enable it, just need to search and install the Github Copilot extension within VSCode. Once that is enabled, you will find that whe...

GITHUB COPILOT,FIRST IMPRESSION 2021-08-13 22:45:31

Install and enable redis extension in PHP 5.X on Windows

Redis is frequently used as a caching layer for web applications to improve its performance. In PHP 5.x, if one wants to use Redis, the redis extension needs to be installed and enabled first. This post will show how to install and enable redis extension on Windows with PHP 5.X. Basically there are two dlls to be downloaded: php_redis.dll and php_igbinary.dll. Below are detailed steps Go to http://windows.php.net/downloads/pecl/releases/redis/2.2.7/ and find the respective php_redis zip ma...

PHP,WINDOWS,REDIS,PHP 5.6 2021-07-11 03:52:18

Why (offset, limit) is slow in database select?

Starting from a problem Five years ago when I was working at Tencent, I found that MySQL request speed was very slow in the pagination scenario. With only 100,000 data, a select query on a single machine took about 2-3 seconds. I asked my mentor why, and he asked in return, "In an indexing scenario, what is the time complexity to get the nth largest number in MySQL?" The pursuit of the answer Confirming the scenario Assuming there is an index on the "status" column, a query like "select * from t...

SLOW,LIMIT,OFFSET,MYSQL 2023-03-12 05:21:02

Your Ultimate Guide to Restoring Database Backups in SQL Server 2012

Summary: Let’s learn how to restore a SQL Server database backup for SQL Server 2012. There are various methods of taking database backups, which include using T-SQL code, SQL Server Management Studio, or third-party applications. These backups taken are purposely saved to be restored when the database becomes corrupt or crashes, migrating the database, making a copy of the database, and other business requirements. In this crash course, we will be focusing on how to restore SQL Server da...

BACKUP,MSSQL 2024-09-24 09:38:09