Programmer Group

Intro TOTP is a time-based one-time password generation algorithm, which is composed of RFC 6238 Definition. Different from the event based one-time password generation algorithm HOTP TOTP is time-based and has the following relationship with HOTP: TOTP = HOTP(K, T) HOTP(K,C) = Truncate(HMAC-SHA-1(K,C)) Among them: T: T = (Current Unix time - ...

Written in front It's hard to write ~ but teacher fan didn't even let me run ~ I'm dry!It adopts the storage mode of structure array. Title: bed allocation A hotel has N rooms, K rooms have a (k), and each room has B (k) single beds. The program of allocating beds for single passengers and withdrawing beds when leaving the hotel is designed by ...

1.yum installation yum install epel-release yum install -y supervisor 2. Configuration fileAfter the supervisor is installed successfully, no default configuration file is provided. You can generate the initialization configuration file of the supervisor by running the echo supervisor conf program mkdir /etc/supervisor echo_supervisord_conf &g ...

1. What is RPCRPC is a way of communication between processes, the full name is "remote call procedure".When a client sends a request to the server, it is not sent directly to the target server, but to the RPC Server, which schedules it.RPC provides remote calling methods that are no different from calling local methods. 2. Introduct ...

String (str) String type is the sequence type of python. Its essence is character sequence. Besides, the string type of python can't be changed. You can't modify the original string, but you can copy part of the string into a new string to achieve the same modification effect. To create a string type, you can use single quotation mark, double q ...

I. description It is found that MySQL has a low-risk vulnerability. You can write your own scheme, test yourself, and upgrade yourself. Version: upgrade MySQL 5.7.25 to the latest version of MySQL 5.7.28. Architecture: master-slave architecture II. Upgrading process 1. Download the latest database software MySQL 5.7.28 2. Upload to the spec ...

introduction Go builds a simple and high-performance native network model (I/O multiplexing netpoll based on go) based on I/O multiplexing and goroutine, which provides a simple network programming mode such as goroutine per connection. In this mode, developers use the synchronous mode to write asynchronous logic, which greatly reduces the ment ...

overviewFirst, synchronize the following project overview:The last article shared the routing Middleware - Jaeger link tracking (actual combat). The response is really unexpected. The "Go China" public number has also been forwarded. Many friends have exchanged with my friends, calling me a big God. Actually, I am a big God, but I hav ...

Wire Use Tutorial Wire is a tool provided by Google to help Google developers implement compile-time dependency injection.Learn to use Wire through examples.Here's a small welcome program to learn how to use Wire. The first step in building a welcome program Let's create a applet that simulates an event with a greeting for a welcome guest with ...

I found that we often encounter a series of operations about time in projects, such as calculating the days of difference between two dates, etc., so I plan to make a good arrangement for later projects to use.Date object: used to process date and timeI. create Date object var date1=new Date();//Parameter none, default current time var date2=ne ...