问题描述
通过对。我从来没有听说过cacher层。
The question is prompted by comment to an earlier question of mine. I've never heard of a cacher layer.
建议是在这个cacher-layer thingie中缓存谷歌生成的图像。有人可以给出指向这样一层的细节的指针吗？ 细节=它住在哪里？我该如何访问它？还有更多。
The suggestion was to cache google-generated images in this cacher-layer thingie. Can someone give the a pointer to the details of such a layer? "Details" = where does it live? how do I access it? and more.
非常感谢！
推荐答案
我会解释我的意思。
首先我需要这个系统因为Google Chart API有一些请求 - 每日CAP所以我需要一些东西来绕过它。
First of all I needed this system because Google Chart API has some requests-daily CAP so I needed something to bypass it.
引擎很简单。
考虑一下vanilla解决方案：在你的HTML中，你的img'src直接指向google。
The engine was pretty simple.
Consider the vanilla solution: in your HTML you have your img' src directly poiniting to google.
<img src="//google.chart.api?params123">
使用cacher，您不会直接指向Google，而是指向您的cacher引擎：
With a cacher you will not point directly to Google but to your cacher engine:
<img src="//yourwebsite/googleImageCacher.php?id=123">
现在你的 googleImageCacher.php 已经死了：
它检查所请求的图像是否在缓存中找到（它可能是一个文件或其他）如果它不存在那么它会要求它谷歌保存它和echo。
It checks if the image requested is found in a cache (it could be a file or whatever) if it's not present then it will request it to google save it and echo.
类似于:(伪代码）
$imageAssociation = array( '123' => '//google.chart.api?params123'
'image2' => '//google.chart.api?otherparma' );
if ( file_exists( 'imageCacheDir/' . $_GET['id'] ) ) {
echo file_get_contents('imageCacheDir/' . $_GET['id']);
} else {
//> Request the image to google
//> Save it in the imageCacheDir
//> Print it.
}
当然你可以简化一些 googleImageCacher.php中的到期时间
Of course you can simplement some expiration time in your googleImageCacher.php
这篇关于“cacher layer”用于谷歌生成的图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！