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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

代天下房產(chǎn)置業(yè)顧問黃先生 2021-07-27 18:06:26 0  1  1266

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  1168

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  1157

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...

伊謝爾倫 2017-05-17 10:01:49 0  2  820

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:

過去多啦不再A夢 2017-05-19 10:07:08 0  1  706

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  1519

Problems with Python3.6 int optimization mechanism, 64-bit machines (-5 to 257)

Optimization mechanism in Python (both 2.7 and 3.5): Numbers between -5~257, if you use the first assignment method, they still belong to the same memory. But the test code I wrote on my local machine is as follows: As a result, this does not comply with the above. Then I compiled it on the Python o...

ringa_lee 2017-05-18 10:54:54 0  1  869

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  971

mysql optimization gender optimization

There are hundreds of thousands of users in the database, 90% of whom are men. Sex = 1. For example: select uid member where sex =1 and xxx xx. Then the sex table will be scanned. How to deal with this?

怪我咯 2017-05-18 10:51:08 0  3  850

Mongodb optimization?

The current scenario is: the performance of the machine is that the CPU is very nb. I forgot the model number of i7. nb means that there are very few CPU operations during querying. View it through htop. But the memory is not good, it is only 8g, and the memory will definitely be increased in the fu...

黃舟 2017-05-17 10:02:32 0  2  958

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  1317

list - java code optimization

The current version can run, but the writing is definitely not good. {Code...} The key is the initialization of data. If not initialized, an error will be reported. Ask for guidance.

PHP中文網(wǎng) 2017-05-17 10:08:39 0  2  744

javascript - nodejs optimization problem

If I need to use nodejs to request multiple java interfaces and finally get all the data to render the page, how can I improve the speed? Before, I was like this {code...} This speed is very slow. Then I quoted async {code...} which made it a little faster, but still very slow. Is there any good sol...

過去多啦不再A夢 2017-05-16 13:44:59 0  5  524

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  851

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?

黃舟 2017-05-19 10:25:19 0  1  757

node.js - nodejs performance optimization issues

{Code...} For example, if cron is executed regularly, when will the memory of cron be released? If a certain attribute of cron is a larger array. For example, cron.data, do I need to manually set cron.data = [] to release memory every time cron ends the task? If I don't release manually...

阿神 2017-05-31 10:41:22 0  1  731

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

女神的閨蜜愛上我 2017-06-14 10:50:39 0  4  1154

php - mysql query optimization problem?

{Code...} How to optimize this query? The premise is that the index cannot be created, because there are already several indexes in this table, which may cause the table to be locked.

大家講道理 2017-05-16 13:08:33 0  2  627

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?

伊謝爾倫 2017-05-19 10:09:54 0  4  678

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  801