snowflake-sdk-patterns

# Snowflake SDK Patterns ## Overview Production-ready patterns for `snowflake-sdk` (Node.js) and `snowflake-connector-python` using real driver APIs. ## Prerequisites - Completed `snowflake-install-auth` setup - Understanding of callback-to-promise conversion patterns - Familiarity with Snowflake's callback-based Node.js API ## Instructions ### Step 1: Connection Pool (Node.js) ```typescript // src/snowflake/pool.ts import snowflake from 'snowflake-sdk'; interface PoolConfig { max: number; idleTimeoutMs: number; } class SnowflakePool { private pool: snowflake.Connection[] = []; private available: snowflake.Connection[] = []; private waiting: ((conn: snowflake.Connection) => void)[] = []; private config: PoolConfig; constructor( private connConfig: snowflake.ConnectionOptions, config: Partial<PoolConfig> = {} ) { this.config = { max: 10, idleTimeoutMs: 60000, ...config }; } async acquire(): Promise<snowflake.Connection> { // Return available connection if (this.available.length > 0) { return this.available.pop()!; } // Create new if under limit if (this.pool.length < this.config.max) { const conn = snowflake.createConnection(this.connConfig); await new Promise<void>((resolve, reject) => { conn.connect((err) => (err ? reject(err) : resolve())); }); this.pool.push(conn); return conn; } // Wait for one to become available return new Promise((resolve) => { t...