---
name: "Plack::Middleware::ConditionalGET"
section: "3pm"
platform: "linux"
package: "libplack-perl"
version: "1.0051-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Plack::Middleware::ConditionalGET"
---

# Plack::Middleware::ConditionalGET(3pm)

Middleware to enable conditional GET

## NAME

Plack::Middleware::ConditionalGET - Middleware to enable conditional GET

## SYNOPSIS

```
  builder {
      enable "ConditionalGET";
      ....
  };
```

## DESCRIPTION

This middleware enables conditional GET and HEAD using `"If-None-Match"` and `"If-Modified-Since"` header. The application should set either or both of `"Last-Modified"` or `"ETag"` response headers per RFC 2616. When either of the conditions is met, the response body is set to be zero length and the status is set to 304 Not Modified.

## SEE ALSO

Rack::ConditionalGet