java - Distributed transaction processing solution

Do you need distributed transactions when deploying hibernate on multiple web servers to operate the database? Will there be any problems using the traditional stand-alone method to access the database? How does the industry deal with this problem?

女神的闺蜜爱上我 2017-06-23 09:14:37 0  1  1231

android - What is Android's MVP model? What is the difference from ordinary writing event handling functions?

What is Android’s MVP model? What is the difference from ordinary writing event handling functions? Does MVP just have an extra presenter class to hold the Android view object, process data and refresh the view? The difference from writing ordinary event processing functions is that the code in the ...

高洛峰 2017-06-17 09:16:12 0  2  1025

java - The operation cannot be performed because the OLE DB provider "SQLNCLI" for linked server "***" cannot start a distributed transaction. Solution?

Users have asked our project to process data from their original projects at the same time. The databases of the new project and the original project are both sqlserver2005, which are on different servers. The test environment sqlserver2005 is linked to the server sqlserver2012. I'm planning to set ...

迷茫 2017-05-17 10:07:11 0  2  748

android - When the mobile qq browser processes the data returned by the server, why is the data format sometimes object and sometimes string?

When processing the data returned by the server, the data format obtained from other browsers is all object. The data format obtained from the mobile browser is sometimes object and sometimes string. What is the reason?

伊谢尔伦 2017-06-29 10:09:40 0  1  1103

java - How to solve the pressure on scheduled task polling database

There are many scheduled tasks, and they are distributed on different servers. To poll the database for data that meets the conditions (status) and then process it. In this way, hundreds or thousands of scheduled tasks poll the database, which directly leads to a sharp increase in database pressure....

PHPz 2017-05-17 10:04:44 0  3  1230

MySQL database transaction processing encountered a small problem

The database data looked like this before running. The results of running the following code are as follows: The database data becomes: I can’t see where there is a problem. Is there something wrong with my usage? Hope you can give me some advice! ! !

寻觅 beyond 2017-09-23 21:36:35 0  1  1192

java - How to catch exceptions and rollback when multi-threading is enabled in a transaction in spring?

Suppose I use 2 threads in a transaction to speed up processing. If the userDao.addOrg() method throws a RuntimeException, the transaction will not be rolled back and the error will not be caught. What should I do? ? {code...}

女神的闺蜜爱上我 2017-06-12 09:26:37 0  1  1658

c# - Are exceptions caught in the presentation layer during project development?

In actual projects, the business logic layer and service layer only throw exceptions but do not handle them. Are exceptions caught and handled in the presentation layer (logging or something)? This seems to be inapplicable if the front-end and back-end are separated. Exception capture needs to be ca...

天蓬老师 2017-05-16 17:05:43 0  2  973

How to upload large video files? I would like to ask how to upload videos from the Chinese website?

Now there is a need to upload a video file with a size of several hundred megabytes. How should the upload be processed to speed up the upload speed? The current upload speed of 300 megabytes takes about 20 minutes. Is there any solution, such as format selection? Conversion processing, etc. How is ...

微尘 2020-04-02 17:19:35 0  0  956

Speeding up the ViteJs development model: Vue 3

Can someone help me speed up my ViteJs server? The problem is that the server is very slow in development mode. I start the server, then start the page in the browser and wait 3-6 minutes for the page to load! Initially, ViteJs downloads a few kilobytes of the resource and then the request is in &qu...

P粉953231781 2023-10-31 13:42:49 0  1  822

Concurrent queue processing system based on Swoole and Redis

Since PHP does not support multi-threading, as a complete system, many operations need to be completed asynchronously. In order to complete these asynchronous operations, we built a Redis queue task system. As we all know, a message queue processing system is mainly divided into two parts: consumers...

PHP中高级教程分享 2018-11-14 11:18:20 1  2  1516

Mysql - PHP inserts 100,000 pieces of content in batches, causing the memory to burst to 128MB. How to deal with it?

Because there is a business designed to generate records in batches and generate 100,000 pieces of content at one time (most of the content is the same, and some fields need to generate random codes), what needs to be done?

PHPz 2017-06-05 11:07:07 0  3  927

python - How to deal with the concurrency problem of multiple requests being called at the same time during auction bidding in an auction system made with java? ?

The auction system has a function of bidding on prices. The current situation is that multiple requests are bidding at the same time. How to deal with this concurrency problem in the background, how to roughly analyze the business logic of who succeeds and who fails in this auction, and how to deal ...

阿神 2017-05-16 13:27:48 0  1  928

Proxy - an nginx requirement. When accessing a web service, if the user is a test user, it will be forwarded to the test version of the web service.

Requirement details: A web service is divided into a formal server and a test server. Through the nginx proxy, the user will submit a login request (post method) to nginx when first accessing, and nginx will be used to determine whether the logged-in user is a test user. If it is a test user, Forwar...

phpcn_u1582 2017-05-16 17:26:13 0  1  720

Design responsive pages with images and content

I'm new to front-end and I'm having some issues dealing with layout and responsiveness. This is my code so far: body{margin:0;background-color:#353535;}.header{color:white;text-align:center;font-size:20px;margin:auto;font-family :'Inter',serif;font-weight:bold;width:700px;

P粉676588738 2023-09-07 15:55:30 0  1  514

How to test functional splitting in microservices

I have a function split into 3 microservices running using kubernetes. Based on the input of the first one, the second one performs the operation and automatically creates a kubernette to handle the final result. I want to do a test to check the whole process but I don't know how to do it. I think t...

P粉517814372 2024-02-04 10:58:15 0  1  535

java - unit testing, how to let spring manage transactions without polluting the database

I am trying to use spring and junit to test the DAO method. I have seen some methods on the Internet that use spring's declarative transaction management (i.e. @Transactional) to perform transaction operations. It is said that after the test is completed, spring will use the test method. Roll back f...

阿神 2017-06-12 09:25:30 0  2  1089

nginx - Regarding the issue of concurrent bidding of calling interfaces, please take a look

I currently have three applications a, b, and c. They have a bidding function. a calls the interface of b to process business logic, and b calls the interface of c to save data. The browser accesses a (nginx corresponds to two a) a calls b's interface through nginx (corresponding to two load balanci...

ringa_lee 2017-05-16 17:20:36 0  1  445

vue.js - vue rich text editor recommendation and php processing base64

vue2 rich text editor recommendation and php processing base64. Now I want to use vue2 to make a PC-side article publishing page. I need to use the rich text editor front-end image to display through base64 and then save it to the server after the user actually submits it. Now I want to ask for advi...

曾经蜡笔没有小新 2017-05-27 17:42:33 0  2  965