nginx - apaceh concurrency issues

Requirements: Apache, as a web server, receives REST requests. The peak concurrent request volume is 500qps, the average is 50qps, and the time performance requirement is within 50ms. The current problem: The time from request initiation to program execution is about 20ms: the average program proces...

PHP中文网 2017-05-16 16:57:25 0  1  729

nginx high concurrency problem

nginx can support high concurrency mainly because of the network I/O model of epoll in the Linux 2.6 kernel. So I wonder, will the concurrency of nginx not work on Windows? Or on another system? So what network IO model does nginx use on Windows or other systems? Seeking heights...

怪我咯 2017-05-16 17:26:48 0  2  986

Asking how to forward the addresses of multiple servers on nginx and solve cross-domain problems

Asking how to forward the addresses of multiple servers on nginx and solve cross-domain problems

漂亮男人 2017-05-16 17:29:41 0  1  557

Are there any concurrency issues when using Java8's stream to operate external collections?

Description: Take out the non-DataTime in cp. Is the following code reasonable? Is there any concurrency problem with deviceDataMap? Map<String,Map<String,String>> deviceDataMap = new HashMap<>(); String cp = "DataTime=200405060101.

代言 2017-06-23 09:13:05 0  1  945

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  955

php7 occasionally slow problem

I am currently using PHP for interface development, and found that less than 1% of the requests are always very slow. Looking at the machine monitoring, I found that the memory and CPU have no jitter at all. Redis is used in the interface, and the redis monitoring is also normal. Have you encountere...

PHP中文网 2017-05-16 13:15:27 0  1  396

javascript - js object array attribute merging problem

When I was working on a question option function, I encountered this merge problem. There are single-choice and multiple-choice questions. Single-choice is no problem. Each question has one answer. Multiple-choice will result in multiple answers. The selection result is similar to the picture below:...

我想大声告诉你 2017-05-19 10:36:44 0  3  835

nginx - front-end and back-end separation development and deployment issues

Problems with separate development and deployment of front-end and back-end

伊谢尔伦 2017-05-16 17:14:55 0  1  2625

python website login and sign-in problem

Problem: After python successfully logged in, it prompted that there was no login when signing in, that is, the cookie was missing. I captured the packet through Fidder and found that compared with the successful manual login, the package sent by Python lacked cookies. The following is the code, but...

天蓬老师 2017-05-18 10:59:42 0  3  810

Forwarding issues using webpack+dev+server - Stack Overflow

Using react to develop projects, my backend colleagues recently provided interfaces. I use fetch to make AJAX requests. But the console reports the following error! Cross-domain problems have arisen. Some people say that webpack+dev+server can realize proxy request forwarding, so that cross-domain p...

黄舟 2017-05-19 10:26:29 0  1  585

java - Forwarded by f5, tomcat uses https protocol problem

A new project was launched today and I encountered a problem. The company uses f5 forwarding and uses the https protocol, but in our project request.getScheme() gets http instead. The operation and maintenance said it was a problem with our code...., I checked the tomcat's serve.xml of our project a...

过去多啦不再A梦 2017-05-27 17:41:49 0  2  1025

Math problem with JS?

Found the problem, thank you all

伊谢尔伦 2017-05-19 10:42:08 0  3  773

I compared the teacher's code several times and found no problem, but there is a problem when opening the browser. Please solve it.

I compared the teacher's code several times and found no problem, but there is a problem when opening the browser. Please solve it.

2019-03-19 22:16:58 0  6  1462

Chrome sometimes has issues with scrolling functionality

I'm having a scrolling issue on my site and I don't understand why. Only on Chrome sometimes scrolling doesn't work. I tried disabling all the code I wrote but the problem persists. In safari, scrolling works fine. https://mirkomina.com/ There doesn't seem to be anything specific that triggers the p...

P粉817354783 2024-03-29 00:21:20 0  1  460

javascript - Problems encountered in WeChat development

Recently when I was developing the WeChat public platform, I encountered some problems with WeChat's built-in browser. When I opened my website with WeChat's built-in browser and clicked on several pages in succession, I wanted to "close the current page" and close the current page. "...

过去多啦不再A梦 2017-06-17 09:16:02 0  4  853

javascript - Questions about git code rollback

For example, there are two branches, dev-a and dev-b; now merge the dev-a branch into the dev-b branch. After merging, I find some problems and want to roll back; that is to say, I still want to keep the dev-b branch. The content remains unchanged; how to operate?

怪我咯 2017-06-10 09:47:55 0  3  809

Verification issues in the article publishing function?

The verification problem in the article publishing function has not been solved? Image verification can be uploaded normally if the require is removed. If the require is added, it will prompt that the title image cannot be empty.

拼搏奋斗 2019-09-24 11:05:02 0  0  1172

java - trade-off between sql performance and high concurrency

SELECT {code...} It is possible to simply use multi-table association. If high concurrency is encountered, performance defects will appear immediately.

PHP中文网 2017-05-17 10:09:04 0  1  620

Problem: Vue's @mouse-down event is not triggered

I'm new to web development and I'm having trouble dealing with vue. From the tutorial I learned that you can use @click when the button is pressed. It works very well. Now I want to make a simple measurement that detects mouse presses and lifts in order to further develop double click and long press...

P粉121447292 2023-09-14 14:26:45 0  1  663

Encountered error: A problem occurred while executing npm install && npm run dev - Vite - Laravel UI React

Hi everyone, today I encountered a problem, when I installed laravelui using react and passed to npminstall step an error occurred, so below you will find the error npmERR!Acompletelogofthisruncanbefoundin:npmERR!C:\Users\E495\AppData\Local\npm -cache\_logs\2023-01-16T08_08_36_872Z-debug-0.logPSC:

P粉551084295 2023-11-10 17:43:07 0  1  1002