Module predicates 

Predicates for determining HTTP request and response cacheability.

Predicates evaluate HTTP messages and return Cacheable or NonCacheable. They can be combined using logical operators from the conditions module.

Request vs Response Predicates

• Request predicates decide whether to attempt a cache lookup
• Response predicates decide whether to store a response in cache

Available Predicates

Request Predicates (request module)

Predicate	Description
request::Method	Match by HTTP method
request::Path	Match by URL path pattern
request::Header	Match by request header
request::Query	Match by query parameter
request::Body	Match by request body content

Response Predicates (response module)

Predicate	Description
response::StatusCode	Match by status code or class
response::Header	Match by response header
response::Body	Match by response body content

Combining Predicates

Use PredicateExt to combine predicates:

use hitbox::predicate::PredicateExt;
use hitbox_http::predicates::request::Method;
use hitbox_http::predicates::header::{Header, Operation};

// Cache GET requests without Cache-Control: no-cache
let predicate = Method::new(http::Method::GET).unwrap();
let predicate = predicate.and(
    Header::new(Operation::Contains(
        http::header::CACHE_CONTROL,
        "no-cache".to_string(),
    )).not()
);

Modules

body

Body content predicates for cache decisions.

conditions

Logical combinators for predicates.

header

Header matching predicates.

request

Request predicates for cache eligibility.

response

Response predicates for cache storage decisions.

version

HTTP version matching predicates.

Type Aliases

NeutralRequestPredicate

A neutral predicate for HTTP requests that always returns Cacheable.

NeutralResponsePredicate

A neutral predicate for HTTP responses that always returns Cacheable.