CDN caching strategy and file refresh techniques in PHP Huawei Cloud API interface docking

CDN cache strategy and file refresh techniques in PHP Huawei Cloud API interface docking

CDN cache strategy and file refresh techniques are very important when docking PHP Huawei Cloud API interface. The role of CDN (Content Distribution Network) is to cache the content requested by users on the nearest edge node, thereby accelerating the transmission of content and improving user access speed. In the API interface docking, we need to set up the CDN cache strategy reasonably and refresh the cache reasonably to ensure the timely update of the content.

1. CDN Cache Strategy

In the PHP Huawei Cloud API interface docking, we can control the survival time and cache update method of cached files on the CDN node by setting the CDN cache policy. PHP Huawei Cloud provides a wealth of CDN cache policy configuration items, including file suffixes, directories, http headers, back-to-origin settings, and more. Below is a sample code showing how to set a CDN caching policy.

use HuaweiCloudSDKCDNV1CdnClient;
use HuaweiCloudSDKCDNV1ModelCreateDomainOriginHostRequest;
use HuaweiCloudSDKCDNV1ModelUpdateDomainOriginHostRequest;

$client = new CdnClient($ak, $sk, $regionId, $projectId);
$request = new CreateDomainOriginHostRequest();
$request->domainId = $domainId;
$request->originHostType = 'HOST_TYPE_DYNAMIC';
$request->customOriginHost = $originHost;

$response = $client->createDomainOriginHost($request);

In the above code, we use the PHP SDK provided by Huawei Cloud to create a CDN client instance. Then, we constructed a CreateDomainOriginHostRequest object and set parameters such as the ID of the CDN domain name, the origin site type, and the custom origin site address. Finally, we called the createDomainOriginHost method to associate the CDN domain name with the origin site address.

In this way, we can set different CDN caching strategies according to the actual situation to meet different needs.

2. File Refresh Techniques

File refresh refers to forcibly refreshing the cached files on the CDN node so that it can re-pull the latest files on the origin site. In API interface docking, we need to master some file refreshing skills in order to refresh the cache in time.

1. Single file refresh

If we only need to refresh a single file, we can use the file refresh API interface provided by Huawei Cloud. Below is a sample code showing how to refresh a single file.

use HuaweiCloudSDKCDNV1CdnClient;
use HuaweiCloudSDKCDNV1ModelPurgeFileRequest;

$client = new CdnClient($ak, $sk, $regionId, $projectId);
$request = new PurgeFileRequest();
$request->body = ["/path/to/file"];

$response = $client->purgeFile($request);

In the above code, we use the PHP SDK provided by Huawei Cloud to create a CDN client instance. Then, we constructed a PurgeFileRequest object and set the file path that needs to be refreshed. Finally, we called the purgeFile method to refresh the cache file on the CDN node.

2. Directory Refresh

If we need to refresh the files in the entire directory, we can use the directory refresh API interface provided by Huawei Cloud. Below is a sample code showing how to refresh an entire directory.

use HuaweiCloudSDKCDNV1CdnClient;
use HuaweiCloudSDKCDNV1ModelPurgeFilesRequest;

$client = new CdnClient($ak, $sk, $regionId, $projectId);
$request = new PurgeFilesRequest();
$request->body = ["/path/to/directory/"];

$response = $client->purgeFiles($request);

In the above code, we use the PHP SDK provided by Huawei Cloud to create a CDN client instance. Then, we constructed a PurgeFilesRequest object and set the directory path that needs to be refreshed. Finally, we called the purgeFiles method to refresh the cache files in the entire directory on the CDN node.

In this way, we can flexibly refresh cache files on CDN nodes to ensure timely updates of content.

Summary:

In the PHP Huawei Cloud API interface docking, CDN caching strategy and file refresh skills are a very important part. By properly setting the CDN cache policy, we can control the survival time of cache files and the cache update method; by flexibly refreshing the cache, we can ensure timely updates of content. I hope the code examples and techniques in this article will help you use CDN in PHP Huawei Cloud API interface docking.

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