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Find where the start up page is set in Firefox

Recently I encountered a weird behavior where a strange webpage showing up every time when I launched my Firefox. The first thought came into my mind is that my homepage of Firefox had been tampered. It might be changed because some software changed my browser settings to promote something. So the next immediate thing I went to check was to see my Firefox browser settings. To my surprise, the homepage setting was not touched. It would still open the Momentum screen which would display some beaut...

WINDOWS,FIREFOX,HOMEPAGE,STARTUP PAGE,HAO123 2021-10-02 02:28:53

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

Install and use GSpace to install apps from Google Play on Huawei Harmony OS

Huawei has released its own branded mobile OS Harmony OS sometime back and some Huawei device models now support installing or upgrading to use Harmony OS. Since this OS is Huawei's own OS and it doesn't come with Google Play by default which most of the current Android apps are hosted on. In this case, how can someone install the apps from Google Play on Huawei Harmony OS or use GMS services like Google Play, Google Maps? The solution provided by Huawei is to install GSpace which is an APP cont...

HUAWEI,GOOGLE PLAY,HARMONYOS 2021-08-01 04:23:58

Google transferred a domain name to a Chinese company for free

Google just completed a domain transfer to another company in China. The interesting part is that this domain transfer is for free. The story begins with a recent tweet from the CEO Dash Huang of a Chinese game company called X.D. Network Inc who claims that they obtained the domain name taptap.cn from Google for free. From the tweet, Mr. Huang expressed his appreciation to Google for freely transferring the domain name taptap.cn to their company. Their company launched some product ...

GOOGLE,TAPTAP.CN,TAPTAP 2021-09-29 11:17:18

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

10 Best Android Apps of 2016

The year 2016 has been gone with all its good and bad memories. But in the field of information technology, this year was another boost in which the field rapidly grew and explores some more essentials for the ease of users. In the field of mobile apps, specially users of Android OS, the year 2016 was awesome because in this year, they got many useful apps created by the highly qualified app developers of the world.Experts of Android OS rounded up a lot of apps created in the year 2016 and they ...

MOBILE APP DEVELOPMENT COMPANY,CUSTOM MOBILE APP DEVELOPMENT COMPANY 2017-01-10 14:07:32

Encrypting and decrypting PGP file or text on MacOS

When doing data exchange among different parties, there is a frequent need of encrypting data or file and sending it to partner and asking partner to use corresponding key to decrypt the data or file. A famous way of exchanging data is using asymmetric keys where no secret key needs to be shared. One party can just use the public key shared by partner to encrypt the data and the other party uses the private key to decrypt the data. Today, we will introduce how to use PGP to encrypt and decrypt d...

PGP,GPG,ENCRYPTION,DECRYPTION,TUTORIAL 2020-10-29 05:06:09