How to purge “public cached URI” programmatically?

Resolved yaquawa
(@yaquawa)

4 years, 10 months ago
I have set the public cache URI to “^/graphql”, which make it cache any GET requests that match the pattern “^/graphql”.

For example:
```
GET https://example.com/graphql?query=foo
GET https://example.com/graphql?query=bar
GET https://example.com/graphql?query=foobar
```
What I want to do is that purging specific cache for example the cache for GET https://example.com/graphql?query=foo after a specific post has been saved.

Currently, to purge the cache for “^/graphql?query=XXX” I have to do a “purge all” action, which is not what I want, that purges too much…
I want to purge the cache for specific URI programmatically.

I have read https://docs.litespeedtech.com/lscache/lscwp/api/ , I’m sure it can be achieved by utilizing the hooks some how… could you show me some sample code for implementing this? Thanks!
- This topic was modified 4 years, 10 months ago by yaquawa.

Viewing 7 replies - 1 through 7 (of 7 total)

Plugin Support qtwrk
(@qtwrk)

4 years, 10 months ago

you can try :

do_action( 'litespeed_purge_url', '/graphql?query=foo' ); via LSCWP API

header('x-litespeed-purge:/graphql?query=foo'); via PHP header() function ( LSCWP itself may send header, you may need to add second arugment false into it as well. )

curl -XPURGE -I https://example.com/graphql?query=foo via command line curl , the sender’s IP must be in LiteSpeed WebServer’s allow list , or you can use --interface 127.0.0.1 , 127.0.0.1 should be automatically added into allow list

Thread Starter yaquawa
(@yaquawa)

4 years, 10 months ago

Thanks @qtwrk !
So the cache key is the path of the URL right? Can I set the cache key myself? For example set the cache key foo for GET https://example.com/graphql?query=foo.
Plugin Support qtwrk
(@qtwrk)

4 years, 10 months ago
not sure what do you mean by “cache key” in this context

LiteSpeed Cache is URL-based caching system , in combine with tags

each URI will have its on cache
```
/graphql?query=foo
/graphql?query=bar
```
these will be 2 caches
Thread Starter yaquawa
(@yaquawa)

4 years, 10 months ago
@qtwrk may be it’s the “cache tag”(https://docs.litespeedtech.com/lscache/lscwp/api/#final-tagging) in the context of LiteSpeed Cache ?

I mean, instead of doing:
do_action( 'litespeed_purge_url', '/graphql?query=foo' );

I’d like to purge the cache for /graphql?query=foo like this:
do_action( 'litespeed_purge_url', 'foo' );

is that possible?
- This reply was modified 4 years, 10 months ago by yaquawa.
Plugin Support qtwrk
(@qtwrk)

4 years, 10 months ago

in that case, you need to attach the tag beforehand

e.g.

do_action( 'litespeed_tag_add', 'my-tag' );

and then you can use

do_action( 'litespeed_purge', 'my-tag' );

to purge it

the tag can be repeatedly used across many pages , and when you call purge , it will purge all pages that contains this tag

Thread Starter yaquawa
(@yaquawa)

4 years, 10 months ago

Thanks @qtwrk

Can you tell me when to use do_action( 'litespeed_tag_add', 'my-tag' ) ?
I mean it should be used in another hook right?
Plugin Support qtwrk
(@qtwrk)

4 years, 10 months ago
when you generate a page that you want to put your own tag into

like

if URL = foo, then
add tag bar
fi
- This reply was modified 4 years, 10 months ago by qtwrk.

Viewing 7 replies - 1 through 7 (of 7 total)

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