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List of the catalog of this article:

• 1、< A href='# How to design a lottery system for a million-level user?OKX app' title='How to design a lottery system for a million-level users?' > How to design a lottery system for a million-level users?
• 2, China's independently developed nationalized million-kilowatt distributed control system was put into use, what does this mean...
• 3, Does Rongwei rx5 million model have a zebra system

How to design a lottery system for a million-level users?

First of all, after using a loop to insert 1 million pieces of data into the redis cache server, the insertion process must be relatively slow, because it is read from the database to the redis cache. After reading, use the random function to randomly extract [0-100) integers and index them directly through index. When it is fast, you can hit the data in no second.

Turntable lottery Turntable, also known as lottery turntable, is generally set by many awards on a circular panel. In front of the circular panel, there is also a fixed pointer.

Solution 1: If you don't know anything about programming and want to learn how to make applets quickly, it is recommended to learn flash+as3. Because flash is originally an animation software, it has a simple and easy-to-understand interface drawing system, unlike languages such as java that need to use code to solve interface problems.

We first enter any number in cell D1, such as 4, then insert any picture on the page, adjust the format to a circle, enter =zp in the formula editing bar, and bind the photo.

Big turntable As a type of activity, the big turntable lottery game has always been very popular.Merchants enter the big turntable and click the big turntable activity to add a new lottery.

The nationalized million-kilowatt-class distributed control system independently developed by China has been put into use. What does this mean...

1. The official birth of the localized million-kilowatt generator has condensed the dreams of generations of electric motor manufacturers in China.

2. "Hualong-1" is a third-generation million-kilowatt nuclear power technology stack with independent intellectual property rights.

3. This will be another important achievement in the independent and localization of nuclear power in China, marking that China will have a digital instrumentation and control system for million-kilowatt nuclear power plants with independent intellectual property rights. As the key equipment of the nuclear power unit, the digital instrumentation and control system of the nuclear power plant is an important part of the nuclear power plant.

4. China's third-generation nuclear power will enter the stage of mass construction. Zhang Huazhu said that in recent years, China's independent innovation ability of nuclear power has been significantly improved, forming independent third-generation nuclear power technology represented by Hualong-1 and CAP1400.

Does Rongwei rx5 million has a zebra system

[Pacific Automobile Network] Rongwei rx5 automatic million has a zebra system. The length, width and height of Rongwei rx5 are 4556mm and 1855mm respectively. M, 1719mm, wheelbase of 2700mm, rx5 is a compact suv.

[Pacific Automobile Network] Rongwei rx5 million commemorative models are equipped with a zebra system. The zebra system is simply an Internet intelligent system with a built-in in-car SIM card that supports 4G network and in-car Wi-Fi hotspot sharing.

. The 4-inch touch display is quite amazing. At that time, the biggest point of the release was the Zebra Zhixing it carried.On-board interconnection system, as an on-board interconnection system created by SAIC and Alibaba, has been applied to many models of SAIC Rongwei.