fast-twitch.middlewares.not-modified

Usage and execution boundary

For GET/HEAD, compares request validators with response ETag/Last-Modified. A match produces 304, removes/disposes the body and removes content-type/content-length. It does not generate an ETag automatically.

(ns application.middleware
  (:require [fast-twitch.middlewares.not-modified :as middleware]))

(defn handler [_]
  {:status 200 :headers {"content-type" "text/plain"} :body "Hello"})

(def app (middleware/wrap-not-modified handler))

This defines the Ring handler portion. Adapt app through routing/ft-handler or pass it to server/listen!; startup instructions and a complete walkthrough show the surrounding project.

Wrapper order and all middleware families. The function reference below preserves the upstream signatures and source links; helper functions do not all share the wrapper's arity.

Upstream function reference

Short-circuits cacheable responses when validators show the resource is unchanged.

not-modified-response

(not-modified-response response request)

Function.

Replaces a cache hit response with a 304 response for GET and HEAD requests. Source

wrap-not-modified

(wrap-not-modified handler)

Function.

Wraps a handler so conditional requests can return 304 responses. Source