sql optimization or

How to optimize sql query select id from user where phone=’131′ or phone=’139′

Alone. 2018-06-13 12:35:53 0  1  1199

How to optimize tp6 query

When the tp6 model is associated with multiple data tables for query, the query will be very slow. How can I optimize it? Is there any optimization method? Help! ! ! ! !

以后会怎样 2023-11-17 08:50:36 0  0  686

mysql optimization - How to optimize mysql count(id) query speed?

The table structure is shown in the figure. The current data volume is 8000W rows. Are there any optimization methods and ideas?

某草草 2017-05-18 10:51:05 0  7  938

javascript - performance optimization issues

How to optimize this code? The boss said that it should be converted into ES6 map data structure. I may have done it wrong and it seems to be slower. This is the optimization I did. It seems to be slower. Please give me some advice.

高洛峰 2017-07-05 10:54:21 0  6  1015

node.js i/o optimization - Stack Overflow

How does node.js optimize i/o performance? I wonder if this senior has any experience to share?

phpcn_u1582 2017-05-24 11:38:47 0  1  696

c# - mysql query optimization?

1. There are more than 1 million pieces of data. The count speed is very slow. Please let me know how to optimize it. 2. Code: {code...} 3. Index user table

怪我咯 2017-05-18 10:51:56 0  5  739

php website speed optimization

PHP website speed optimization, URL: http://www.daitianxiapr.com/esf; if any master is willing to join the fire, please add me on WeChat 13880287714

代天下房产置业顾问黄先生 2021-07-27 18:06:26 0  1  1118

mysql - sql statement optimization issues

{Code...} Assuming that the amount of data in table c is millions, how to optimize these two pieces of data to make the execution faster. Thank you

女神的闺蜜爱上我 2017-06-14 10:50:39 0  4  1037

javascript - requirejs module optimization problem

When the requirejs module is optimized and packaged, a module ID will be added to the anonymous define function after it is packaged. Can it be configured to be anonymous define after packaging?

黄舟 2017-05-19 10:25:19 0  1  643

How to optimize code Waiting (TTFB) time

As shown in the picture: This waiting time is too long and has seriously affected the user experience. How to optimize this waiting time? Written using Yii framework

小伙伴 2019-02-22 09:38:11 0  2  1431

javascript - View of tail call optimization

After reading Ruan Yifeng's ES6 tutorial, I don't know much about tail call optimization. I would like to ask how to monitor memory changes in chrome. I checked the memory in Take Heap Snapshot in Memory, but I don't know which part of the data I should focus on. The code is as shown in the figure:

过去多啦不再A梦 2017-05-19 10:07:08 0  1  569

Optimization of Mongodb index?

It is not clear that there is no optimization in the index village. There is no in-depth understanding of indexes. Please help explain it by the way! 1. Each piece of data has geographical information. (province, city), then I created the index: {code...} My doubt is, when this was created, there wa...

伊谢尔伦 2017-05-17 10:01:49 0  2  687

javascript - Front-end performance optimization, how to locate the blank time between timeLine resources?

I just came into contact with the front-end optimization of a project. When I looked at timeLine in Google Developer Tools, I found that there was a blank space between two resources, as shown in the picture. I don’t know what caused it. How to locate & optimize it? .]

世界只因有你 2017-06-26 10:51:10 0  2  836

javascript - The page is stuck when opening, please optimize it, thank you!

Because a lot of pictures are used, the page opens very slowly. How can we optimize it well? The page has two parts, PC and mobile. The main reason is that the PC is very laggy.

世界只因有你 2017-06-28 09:28:19 0  4  904

nginx - ddos ​​attack 502 appears on the homepage, please let the official optimize it quickly

I suddenly tested it with ab today/Homepage. I found that it was directly 502. Please let the official optimize it quickly. Code: ab -c 1000 -n 1000000 /

淡淡烟草味 2017-05-16 17:23:51 0  2  822

How to optimize query reduction?

Just wanted to ask! The red dots above request the back-end to directly query the database conditions and return the result! Now the database can be processed quickly if there is little data, but once the amount of data is large, the returned results will become slower. How to optimize the backend? ...

我想大声告诉你 2017-06-06 09:52:20 0  1  781

In mysql optimization, the field setting is not null.

In mysql optimization, try to avoid setting fields to null, which will affect query speed. This refers to whether only the index field is not set to null, or it is best not to set all fields to null.

Craile 2020-04-05 10:27:28 0  3  1384

javascript - optimization of a regular expression

Match the integer of 1024-65535, that is, 65535 >= x >= 1024. Use regular expressions to write it. Mine is /^(102[4-9]|10[3-9]d{1}|1[ 1-9]d{2}|[2-9]d{3}|[1-5]d{4}|6[0-4]d{3}|65[0-4]d{2} |655[0-2]d{1}|6553[0-5])$/ Is there a more concise and optimized way to write it?

伊谢尔伦 2017-05-19 10:09:54 0  4  574

javascript - Two jQuery operations trigger the same function, how to optimize the writing?

{Code...} For example, if you click a button or press Enter in the input box to perform the same operation, can it be optimized into the following type of code: {Code...}

phpcn_u1582 2017-05-19 10:34:29 0  1  422

javascript - How to optimize web page opening speed?

1. Reduce the number of file requests, 2. Use sprite images. 3. Use lazy loading. (How to reduce the number of file requests?) (Why can it be optimized by reducing the number of file requests? If I have 10 10k files and one 100k file, and my 10 10k files are imported at the same time through multipl...

淡淡烟草味 2017-06-10 09:48:27 0  3  642