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
ruby 
require 'sinatra'
require 'json'
require_relative 'book'
require_relative 'helpers'

set :books, {

Sinatra Content Negotiation: Serve HTML or JSON by Accept Header

sinatra rack content-negotiation
by codesnips 4 tabs
ruby 
class AddSlugToArticles < ActiveRecord::Migration[7.1]
  def change
    add_column :articles, :slug, :string
    add_index :articles, :slug, unique: true

    reversible do |dir|

Auto-Generating URL Slugs in Rails with a before_validation Callback and Friendly Finder

rails activerecord slugs
by codesnips 4 tabs
php 
<?php

namespace App\Correlation;

final class CorrelationIdStorage
{

Propagate a Correlation ID Through Symfony Requests and Monolog Logs

symfony monolog logging
by codesnips 4 tabs
go 
package main

import (
	"log"
	"net/http"
	"time"

Instrumenting Go HTTP Handlers with Prometheus Counters and Histograms

prometheus metrics observability
by codesnips 3 tabs
javascript 
const multer = require('multer');

const ALLOWED_MIME = new Set(['image/jpeg', 'image/png', 'image/webp']);

function fileFilter(req, file, cb) {
  if (!ALLOWED_MIME.has(file.mimetype)) {

Upload and Resize User Avatars with Multer and Sharp in Express

express multer sharp
by codesnips 3 tabs
rust 
use axum::{
    extract::{FromRequestParts, State},
    http::{request::Parts, StatusCode},
    response::{IntoResponse, Response},
    Json,
};

Axum Bearer Token Extractor with Shared Auth State and Typed Claims

axum authentication middleware
by codesnips 3 tabs
rust 
use once_cell::sync::Lazy;
use regex::Regex;
use std::str::FromStr;

#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub enum Severity {

Grouping Log Lines by Severity and Emitting a Summary Report in Rust

logging parsing cli
by codesnips 3 tabs
typescript 
export const TOTAL_STEPS = 3;

export interface WizardData {
  email: string;
  password: string;
  fullName: string;

Typed Multi-Step Wizard Form With a useReducer State Machine in React

react typescript usereducer
by codesnips 4 tabs
java 
package com.example.tracing;

import jakarta.servlet.Filter;
import jakarta.servlet.FilterChain;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;

Propagate a Correlation ID Through Servlet Requests With MDC and a Feign Interceptor

java servlet filter
by codesnips 3 tabs
go 
package pipeline

import (
	"bufio"
	"errors"
	"io"

Stream and Transform a Large Log File Line-by-Line with bufio.Scanner

go streaming bufio
by codesnips 3 tabs
typescript 
import { Injectable } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';

@Injectable()
export class SignupFormService {
  readonly form: FormGroup;

Multi-Step Signup Wizard in Angular with a Shared FormGroup and Stepper Service

angular reactive-forms wizard
by codesnips 4 tabs