CodeSnips

python

import hashlib
import json


def compute_etag(payload, weak=False):
    body = json.dumps(payload, sort_keys=True, separators=(",", ":"))

Conditional GET with ETag Generation and 304 Not Modified in Flask

flask http caching

by codesnips 3 tabs

javascript

const crypto = require('crypto');

function computeStrongEtag(body) {
  const buf = Buffer.isBuffer(body) ? body : Buffer.from(String(body));
  const digest = crypto.createHash('sha1').update(buf).digest('base64');
  return '"' + digest + '"';

ETag-Based HTTP Caching in Express With 304 Not Modified Handling

express http-caching etag

by codesnips 3 tabs

ruby

require 'digest'
require 'json'

module CacheHelpers
  def cache_control_public(max_age = 60)
    cache_control :public, :must_revalidate, max_age: max_age

Conditional GET in Sinatra with ETag and Last-Modified for Cacheable JSON Endpoints

sinatra http-caching etag

by codesnips 3 tabs