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Simple timing task solution: when using redis's keyspace notifications, you need to note that this function is launched after redis version 2.8, so the reids on your server should be at least 2.8 or above; (A) business scenario: 1. When a business is triggered, a scheduled task needs to be started, and another task needs to be executed within t ...

Preface: We've seen a lot of articles analyzing the use or principles of Redis, but the introduction to a complete set of independent redis cluster environments is not much or not detailed enough. Then, this paper will take you hand to set up a Redis cluster environment, Redis cluster in the company's internal production environment, mostly bu ...

CentOS 6.5 install Redis3.0 1. Install C compilation environment First, you need to install the C environment for compiling Redis, and execute the following commands at the command line: [root@itzhouq32 tools] yum install gcc-c++ 2. Upload redis3.0 to Linux 3. Unzip redis. I unzip it to / usr/local [root@itzhouq32 tools]# tar -xvf redis-3.0.0.t ...

Why do we have cookie s and session s? Browser sends http request to server, establishes session, server returns complete, session ends, browser and service disconnect Send the http request again and establish the session again. The user information will be lost. The server cannot distinguish the requested information. A login account. After t ...

Three links There are often students in the community who ask, "is my PHP program blocked, is my PHP program open (not confident about the code I wrote), and is my PHP program problematic?" then they post their own programs, and enter the happy irrigation link. As time goes on, we have not formed a systematic solution. It is better to ...

Record some errors during upgrade. This upgrade is 1.5.x upgrade to 2.1.4 ---------------------------------------------- If java version is lower than 8, please do not upgrade. spring boot 2.0 requires at least java 8. ---------------------------------------------- One: WebMvcConfigurerAdapter has been abandoned @Configuration public cl ...

In the past, the basic way to write cache to API interface was to write code as follows: // redis key var bookRedisKey = ConstRedisKey.RecommendationBooks.CopyOne(bookId); // Get cached data var cacheBookIds = _redisService.ReadCache<List<string>>(bookRedisKey); if (cacheBookIds != null) { // return } else { // Perf ...

Generally, there are two ways to realize current limiting, token bucket and leaky bucket. Gold bucket is the number of initialization tokens (containers), which can be passed by taking the token inside. No token can't report an error. You can set the speed and maximum number of tokens to be added to the container The leaky bucket is to put a re ...

Now there are three main login methods: account password login, SMS verification code login and third-party authorized login. The previous section Spring security (3) -- authentication process We have analyzed the spring security account password mode login. Now let's analyze the spring security SMS mode authentication login.   &emsp ...

Download workerman https://www.workerman.net/download   2. Download workerman/mysql http://doc3.workerman.net/640201 1. The timing function is an anonymous function (closure) use \Workerman\Worker; use \Workerman\Lib\Timer; require_once './Workerman/Autoloader.php'; $task = new Worker(); // Start how many processes to ru ...