for a key daily maximum limit, such as key axiom 100; can succeed if it is less than 100. use redis as storage if the concurrency is relatively large, the program logic first determines whether the value of key is less than 100, and then the value of ...
such as now I want to design an online seat selection system but when users sign up, they can dynamically edit unreserved seats in the background how should I design it from the generation of seats to the final registration, seat selection and editing...
1. Problem description gitphp-redis:git clone https: github.com edtechd phpredis.git extension=redis.so php.ini php-fpm: `[27-Apr-2018 08:19:57 UTC] PHP Warning: PHP Startup: Unable to load dynamic library redis.so (tried: usr lib64 php modules...
recently read some tutorials on caching: Memcache stores data as hash tables with key- > value structure; redis can support five data types:: string (strings), hash (hash), list (list), set (collections) and zset (sorted set: ordered collections) is o...
recently, we integrated shiro with springboot and used redis as the session cache container for shiro. Most netizens on Baidu shiro configured the same cacheManager and sessionDAO, in SecurityManager and checked the source code with questions. We found ...
the idea is that I first record several different points in redis, and then take a point as the center, get the points with a square circle, such as 500m, and sort them by distance, but find that the closer the longitude and latitude, the greater the dis...
use this.clearCachedAuthenticationInfo () to pass in tokens, and also execute this.clearCachedAuthorizationInfo () operation to empty the authorization information. The above two operations are the same principals . In Debug, it is found that the r...
recently, when (spring) integrates redis in a project, I always hold a null pointer exception when going to the factory instance: but the unit test is always normal: the following is the redis-config.xml file public class SpringContextUtil implement...
1. You can find out how much money you can get for each order first. Note: you can t inquire about it when you place an order. (the current consideration is to slow down the memory when querying, but if this order is checked, the order will not necessa...
in springboot, how to use code to directly configure Redis, without configuration information in properties? template not found yet. ask for help. ...
1. There is no problem with testing the code locally 2. When you turn on php think queue:listen on the server, there is no response or error message, as if nothing has been moved. 3. However, you can insert a new task queue, but do not execute to the s...
how do I convert the original string type to the set type? ...
the materials found on the Internet built their own redis, and then built a simple springboot project to link to redis. Because the test machine has a password, there is no permission link to start the error report at the beginning, and the startup does...
.env file database.php 3.127.0.0.1redis10.10.10.6710.10.10.67redis,567redisredis desktop manager5. 6. even if it is written like this, it will not connect to 5. I think this is a hole dug by env, asking all the great gods to solve their doubts ....
shop on the PC, then add the goods to the shopping cart, ; then the question is: how does this function work? my negative answer: (1) should not directly operate the database, after all, Taobao data is too large, direct operation of the database,...
you need to use laravel queues (redis drivers) to implement code execution asynchronously without delay, such as $stock = 5; $job = new DecStock (); $this- > dispatch ($job); return $stock; the purpose is to return the variable $stock as soon as...
recently I am using docker to learn redis, when I see that redis can be the master and slave, I use docker to deploy the service. In some businesses that need to be cached, there are some problems that I haven t thought clearly in my mind . redis is...
A registration function. The function of accessing the registered url, url is to read the user names and passwords of 500 users from the excel file, read out a piece of data, run the create_user function at a time to create a user, but this will cause t...
after the order exceeds a certain time, the user does not confirm the receipt, so the system needs to automatically complete the confirmation operation, that is, to change the status of the order. Do you have any good ideas? I have seen before that so...
recently, a project is a theater ticket management system, but the ticket module does not know how to implement it. At first, it uses the transaction and locking mechanism of MySQL database, but there are still some problems. Finally, I think about wheth...
https: codepen.io anon pen P. my code is like above, when you hold down the mouse and drag the red block, when you move quickly, it often won t move. but I took a look at what other people wrote will not be like this, ah, which is the key part of ...
1. How to set the secondary mulch can only be dragged in the primary mulch, and the secondary mulch can not exceed the primary mulch 2. The code is slightly 3. No error reported 4pm. If the picture is shown 5. Reference link ...
given that the elements in an array $arr, array are 0 to NMagi N < = $NMMI 1, find out whether there are any duplicate elements. The time complexity is O (n), and the space complexity is O (1) ....
want to optimize the typesetting of the official account for the code: the code is as follows: <p style="color:-sharpFFFFFF; font-family: PingFang SC ; font-size: 16px; font-weight:normal; line-height: 26px; margin: 1em 2em; padding: 2em; t...
uiindex abc index in this way, both active will be elected. Please tell us, what should we do in this situation? ...