clickhouse-multi-env-setup

# ClickHouse Multi-Environment Setup ## Overview Configure separate ClickHouse instances for development, staging, and production with proper secrets management, environment detection, and infrastructure-as-code. ## Prerequisites - ClickHouse Cloud account or self-hosted instances per environment - Secret management solution (Vault, AWS Secrets Manager, GCP Secret Manager) - CI/CD pipeline with environment variables ## Instructions ### Step 1: Environment Strategy | Environment | Instance | Purpose | Data | |-------------|----------|---------|------| | Development | Docker local | Fast iteration | Synthetic seed data | | Staging | ClickHouse Cloud (Dev tier) | Pre-prod validation | Sampled prod copy | | Production | ClickHouse Cloud (Prod tier) | Live traffic | Real data | ### Step 2: Configuration Module ```typescript // src/config/clickhouse.ts interface ClickHouseEnvConfig { url: string; username: string; password: string; database: string; maxConnections: number; requestTimeout: number; compression: boolean; } const configs: Record<string, ClickHouseEnvConfig> = { development: { url: 'http://localhost:8123', username: 'default', password: process.env.CLICKHOUSE_PASSWORD ?? 'dev_password', database: 'app_dev', maxConnections: 5, requestTimeout: 60_000, // Longer for debugging compression: false, // Easier to debug raw }, staging: { url: process.env.CLICKHOUSE_HOST ?? 'https://staging.clickhouse.cloud:...