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php - Using http's Last-Modified cache to read cached files?

Recently, I have studied the Last-Modified caching mechanism of http, which allows the browser to read the cache file, $num = 4; //Simulate server data changes and determine whether the browser needs to read the cache file if($num==4 ) { {code...} }else{ {code...} } I tested the above and it can be read...

2017-05-16 13:14:43

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CI goes to the database to query the results. If the cache is turned on in the configuration, it can be cached. However, it is cached in the form of files. If I use memcache to cache the results, is it unnecessary? There is another problem. The caching mechanism of CI itself is similar to memcache. Which one is more efficient? Wait online

2017-05-16 16:43:32

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In tp5.1, I have an idea to encapsulate a class and write all the data that needs to be read, including update and delete methods. The key point is that this class generates cache files. If it is called like this, it does not go through the database. Isn’t it very complicated? quick? I imagine it will be faster. I just don’t know if it’s safe or not

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python - How to delete files "slowly"?

Now there is a requirement to delete slow cache files in the background. The cache files are very large. Sometimes a single file is hundreds of gigabytes. When deleting, the hard disk usage must not exceed 5%~10%. Is there any way? Win7 NTFS partition In fact, you can also ask how to delete part of the file instead of the entire file...

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If PHP uses multi-dimensional arrays, will the efficiency be very low?

When using PHP to do projects, you need to use a data structure to store data, but in PHP, it seems that it can only be stored using arrays. The configuration files of PHP's Laravel and other frameworks all use multi-dimensional arrays, such as: {code...} I think the efficiency of multi-dimensional arrays will be very low, but the Laravel framework...

2017-06-15 09:22:11

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PHP文件生成的图片无法使用CDN缓存的解决方法

Course Introduction：这篇文章主要介绍了PHP文件生成的图片无法使用CDN缓存的解决方法,这里的PHP生成图片是指src地址是一个PHP文件的图片,如果不做CDN,服务器的压力会非常大,本文就讲解了如何加进CDN的方法,需要的朋友可以参考下

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