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Example code of codewiser/http-cache-control

Informations about the package http-cache-control

HTTP Cache-Control for Laravel

This package provides solution to work with HTTP Cache-Control headers. Resources are cached and then invalidates on Eloquent events. Server may respond without making database requests, just using cache values.

Prepare models

CacheControl uses cache to keep headers values. Then model is changed the associated cache must be invalidated.

The models must implement \Codewiser\HttpCacheControl\Contracts\Cacheable.

Here is example of implementation. Classes share cache tag, so changing any Model invalidates shared cache.

Usage

CacheControl class analyzes request headers and creates response with proper headers.

First argument must be a \Psr\SimpleCache\CacheInterface, or \Codewiser\HttpCacheControl\Contracts\Cacheable, or classname of a Model, that implements that interface.

The second argument is a callback, that should return response content. This callback would be called only if necessary.

Cache-Control header

You may set any Cache-Control directives you like:

If no public or private directives was not set, it would be private by default.

Nothing would be cached on server in this case.

Expires header

Or you may set only Expires header:

Nothing would be cached on server in this case.

Caching entire response

You may want to cache the entire response:

Use with care. Note, that cache may become huge.

Private Cache

If controller response must not be shared across users, you should set Cache-Control: private directive.

Vary header

Vary headers describes a list of request headers, that matters for caching.

For example, your application supports different languages, so cache depends on Accept-Language request header:

Note, that web-server may append more Vary headers values. It is Accept-Encoding as usual.

Conditional headers

Controller may respond with ETag and/or Last-Modified header, so the next request may bring If-None-Match or If-Modified-Since headers, that makes it conditional.

In this example local cache stores only ETag value. That would be enough to check future requests with If-None-Match.

This way is the most cache careful.

All versions of http-cache-control with dependencies

PHP Build Version
Package Version
Requires php Version ^8.0
laravel/framework Version >=10.0
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