codesnips

caching

ruby 
class LeaderboardCache
  TOP_KEY = "leaderboard:top".freeze
  STATS_KEY = "leaderboard:stats".freeze

  def top_players
    Rails.cache.fetch(TOP_KEY, expires_in: 5.minutes, race_condition_ttl: 15.seconds) do

Cache Stampede Protection with race_condition_ttl

rails caching performance
by codesnips 3 tabs
python 
from django.core.cache import cache


class RateLimiter:
    def __init__(self, scope, limit, window_seconds):
        self.scope = scope

Rate-Limiting Django Password Reset Requests in a Form's clean() Method

django rate-limiting caching
by codesnips 3 tabs
ruby 
class TrendingPostsService
  CACHE_KEY = 'trending_posts:v1'.freeze
  CACHE_TTL = 15.minutes

  def self.call(limit: 10)
    Rails.cache.fetch(CACHE_KEY, expires_in: CACHE_TTL) do

Redis caching for expensive computations

rails redis caching
by Alex Kumar 1 tab
javascript 
const { z } = require('zod');

const ConfigSchema = z.object({
  env: z.enum(['development', 'test', 'production']).default('development'),
  port: z.coerce.number().int().positive().default(3000),
  database: z.object({

Cached Config Singleton in Node.js: Load Once, Share Everywhere

nodejs configuration singleton
by codesnips 3 tabs
javascript 
'use strict';

function dedupeAsync(producer, keyFn) {
  const pending = new Map();
  const resolveKey = keyFn || ((...args) => JSON.stringify(args));

Deduplicate Concurrent Async Calls With a Promise Cache in Node.js

nodejs async promises
by codesnips 3 tabs
ruby 
class ApplicationController < ActionController::Base
  before_action :set_turbo_cache_control

  class_attribute :turbo_no_cache, default: false

  def self.no_turbo_cache

Avoid caching sensitive pages in Turbo Drive

rails hotwire turbo
by codesnips 4 tabs
java 
package com.example.demo.config;

import com.github.benmanes.caffeine.cache.Caffeine;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.caffeine.CaffeineCacheManager;

Caching strategies with Spring Cache

java spring-boot caching
by David Kumar 2 tabs
ruby 
class LastSeenTracker
  THROTTLE = 5.minutes
  PENDING_KEY = "pending:last_seen".freeze

  class << self
    def touch(user_id, at: Time.current)

Database “Last Seen” without Hot Row Updates

rails performance redis
by codesnips 3 tabs
ruby 
class DashboardMetrics
  include ActiveModel::Model

  attr_reader :account

  def initialize(account)

Expiring Dashboard Fragment Caches with a Versioned Composite Cache Key in Rails

rails caching fragment-caching
by codesnips 3 tabs
php 
<?php

namespace App\Report;

use App\Repository\OrderRepository;
use Symfony\Contracts\Cache\ItemInterface;

Cache an Expensive Sales Report in Symfony With a Stamped Key and Invalidation Subscriber

symfony caching psr-6
by codesnips 3 tabs
ruby 
module RequestStore
  def self.store
    Thread.current[:request_store] ||= {}
  end

  def self.fetch(key)

Hot Path Memoization (within request only)

rails performance memoization
by codesnips 4 tabs
go 
package api

import "net/http"

func ETag(w http.ResponseWriter, r *http.Request, etag string) bool {
  w.Header().Set("ETag", etag)

ETag handling for conditional GETs (cheap caching)

go http caching
by Leah Thompson 1 tab