Upstash Redis Helper (lib/redis.ts)

Safe, typed Redis operations with env validation, timeout handling and diagnostics for serverless environments.

// Source: https://github.com/mperkins0155/llms-txt-hub | License: MIT | Copyright 2025 David Dias
// Provided via justclaw.it.com; keep this notice with the code.
import { logger } from '@thedaviddias/logging'
import type { Redis } from '@upstash/redis'

/**
 * Upstash Redis client configuration with security and error handling
 * HTTP-based Redis client optimized for serverless environments
 */

// Validate required environment variables
const requiredEnvVars = {
  KV_REST_API_URL: process.env.KV_REST_API_URL,
  KV_REST_API_TOKEN: process.env.KV_REST_API_TOKEN
}

// Check for missing environment variables
const missingEnvVars = Object.entries(requiredEnvVars)
  .filter(([_, value]) => !value)
  .map(([key, _]) => key)

const REDIS_OPERATION_TIMEOUT_MS = 1_500
let redisUnavailableLogged =

... (truncated -- full source via MCP)